Fixed Formatting

electron/src/machines/buffer/buffer1/Buffer1ControlPage.tsx

@@ -5,15 +5,37 @@ import React from "react";
 import { useBuffer1 } from "./useBuffer1";
 import { ControlCard } from "@/control/ControlCard";
 import { SelectionGroup } from "@/control/SelectionGroup";
+import { EditValue } from "@/control/EditValue";
+import { TimeSeriesValueNumeric } from "@/control/TimeSeriesValue";
+import { roundToDecimals } from "@/lib/decimal";
+import { Label } from "@/control/Label";
+import { TouchButton } from "@/components/touch/TouchButton";
+import { StatusBadge } from "@/control/StatusBadge";
 
 export function Buffer1ControlPage() {
-  const { state, setBufferMode } = useBuffer1();
+  const {
+    state,
+    defaultState,
+    setBufferMode,
+    setCurrentInputSpeed,
+    pullerSpeed,
+    setPullerRegulationMode,
+    setPullerTargetSpeed,
+    liftPosition,
+    gotoLiftHome,
+    isLoading,
+    isDisabled,
+  } = useBuffer1();
+
+  const current_input_speed =
+    state?.current_input_speed_state.current_input_speed ?? 0.0;
+  const default_speed = 0.0;
 
   return (
     <Page>
       <ControlGrid>
         <ControlCard className="bg-red" title="Mode">
-          <SelectionGroup<"Standby" | "FillingBuffer" | "EmptyingBuffer">
+          <SelectionGroup<"Standby" | "Hold" | "Filling" | "Emptying">
             value={state?.mode_state.mode}
             orientation="vertical"
             className="grid h-full grid-cols-2 gap-2"
@@ -24,13 +46,19 @@ export function Buffer1ControlPage() {
                 isActiveClassName: "bg-green-600",
                 className: "h-full",
               },
-              FillingBuffer: {
-                children: "FillingBuffer",
+              Hold: {
+                children: "Hold",
+                icon: "lu:Pause",
+                isActiveClassName: "bg-green-600",
+                className: "h-full",
+              },
+              Filling: {
+                children: "Filling",
                 icon: "lu:Flame",
                 isActiveClassName: "bg-green-600",
                 className: "h-full",
               },
-              EmptyingBuffer: {
+              Emptying: {
                 children: "EmptyingBuffer",
                 icon: "lu:ArrowBigLeftDash",
                 isActiveClassName: "bg-green-600",
@@ -40,6 +68,83 @@ export function Buffer1ControlPage() {
             onChange={setBufferMode}
           />
         </ControlCard>
+        <ControlCard title="Set Current Input Speed - (For Debugging)">
+          <EditValue
+            title="Input Speed"
+            unit="m/min"
+            value={current_input_speed}
+            defaultValue={default_speed}
+            min={0.0}
+            max={60.0}
+            step={0.1}
+            renderValue={(value) => roundToDecimals(value, 1)}
+            onChange={setCurrentInputSpeed}
+          />
+        </ControlCard>
+
+        <ControlCard className="bg-red" height={2} title="Lift">
+          <TimeSeriesValueNumeric
+            label="Position"
+            unit="mm"
+            timeseries={liftPosition}
+            renderValue={(value) => roundToDecimals(value, 1)}
+          />
+          <Label label="Home">
+            <TouchButton
+              variant="outline"
+              icon="lu:House"
+              onClick={() => gotoLiftHome()}
+              disabled={isDisabled}
+              isLoading={isLoading || state?.lift_state?.is_going_home}
+            >
+              Go to Home
+            </TouchButton>
+            {state?.lift_state?.is_homed !== true ? (
+              <StatusBadge variant={"error"}>{"Not Homed"}</StatusBadge>
+            ) : null}
+          </Label>
+        </ControlCard>
+
+        <ControlCard className="bg-red" title="Puller">
+          <TimeSeriesValueNumeric
+            label="Speed"
+            unit="m/min"
+            timeseries={pullerSpeed}
+            renderValue={(value) => roundToDecimals(value, 1)}
+          />
+          <Label label="Regulation">
+            <SelectionGroup
+              value={state?.puller_state?.regulation}
+              options={{
+                Speed: {
+                  children: "Speed",
+                  icon: "lu:Gauge",
+                },
+                Diameter: {
+                  children: "Diameter",
+                  icon: "lu:Sun",
+                  disabled: true,
+                },
+              }}
+              onChange={setPullerRegulationMode}
+              disabled={isDisabled}
+              loading={isLoading}
+            />
+          </Label>
+          <Label label="Target Speed">
+            <EditValue
+              value={state?.puller_state?.target_speed}
+              unit="m/min"
+              title="Target Speed"
+              defaultValue={defaultState?.puller_state?.target_speed}
+              min={0}
+              max={75}
+              step={0.1}
+              renderValue={(value) => roundToDecimals(value, 1)}
+              onChange={setPullerTargetSpeed}
+            />
+          </Label>
+        </ControlCard>
       </ControlGrid>
     </Page>
   );

electron/src/machines/buffer/buffer1/buffer1Namespace.ts

@@ -16,23 +16,55 @@ import {
   ThrottledStoreUpdater,
 } from "../../../client/socketioStore";
 import { MachineIdentificationUnique } from "@/machines/types";
+import {
+  createTimeSeries,
+  TimeSeries,
+  TimeSeriesValue,
+} from "@/lib/timeseries";
 
 // ========== Event Schema Definitions ==========
 
 /**
  * Machine operation mode enum
  */
-export const modeSchema = z.enum([
-  "Standby",
-  "FillingBuffer",
-  "EmptyingBuffer",
-]);
+export const modeSchema = z.enum(["Standby", "Hold", "Filling", "Emptying"]);
 export type Mode = z.infer<typeof modeSchema>;
 
 /**
  * Consolidated live values event schema (30FPS data)
  */
-export const liveValuesEventDataSchema = z.object({});
+export const liveValuesEventDataSchema = z.object({
+  lift_position: z.number().nullable(),
+  puller_speed: z.number(),
+});
+
+/**
+ * Puller regulation type enum
+ */
+export const pullerRegulationSchema = z.enum(["Speed", "Diameter"]);
+export type PullerRegulation = z.infer<typeof pullerRegulationSchema>;
+
+/**
+ * Puller state event schmema
+ */
+export const pullerStateSchema = z.object({
+  regulation: pullerRegulationSchema,
+  target_speed: z.number(),
+  target_diameter: z.number(),
+  forward: z.boolean(),
+});
+
+/**
+ * Lift state schema
+ */
+export const liftStateSchema = z.object({
+  is_going_up: z.boolean(),
+  is_going_down: z.boolean(),
+  is_homed: z.boolean(),
+  is_going_home: z.boolean(),
+  is_buffering: z.boolean(),
+  step_size: z.number(),
+});
 
 /**
  * Mode state event schema
@@ -41,6 +73,10 @@ export const modeStateSchema = z.object({
   mode: modeSchema,
 });
 
+export const currentInputSpeedSchema = z.object({
+  current_input_speed: z.number(),
+});
+
 /**
  *  Connected machine state scheme
  */
@@ -65,7 +101,10 @@ export const connectedMachineStateSchema = z.object({
 
 export const stateEventDataSchema = z.object({
   mode_state: modeStateSchema,
+  lift_state: liftStateSchema,
+  puller_state: pullerStateSchema,
   connected_machine_state: connectedMachineStateSchema,
+  current_input_speed_state: currentInputSpeedSchema,
 });
 
 // ========== Event Schemas with Wrappers ==========
@@ -80,8 +119,24 @@ export type StateEvent = z.infer<typeof stateEventSchema>;
 export type Buffer1NamespaceStore = {
   // State events (latest only)
   state: StateEvent | null;
+  defaultState: StateEvent | null;
+
+  // Time series data for live values
+  liftPosition: TimeSeries;
+  pullerSpeed: TimeSeries;
 };
 
+// Constants for time durations
+const TWENTY_MILLISECOND = 20;
+const ONE_SECOND = 1000;
+const FIVE_SECOND = 5 * ONE_SECOND;
+const ONE_HOUR = 60 * 60 * ONE_SECOND;
+
+const { initialTimeSeries: pullerSpeed, insert: addPullerSpeed } =
+  createTimeSeries(TWENTY_MILLISECOND, ONE_SECOND, FIVE_SECOND, ONE_HOUR);
+const { initialTimeSeries: liftPosition, insert: addLiftPosition } =
+  createTimeSeries(TWENTY_MILLISECOND, ONE_SECOND, FIVE_SECOND, ONE_HOUR);
+
 /**
  * Creates a message handler for Buffer1 namespace events with validation and appropriate caching strategies
  * @param store The store to update when messages are received
@@ -110,12 +165,41 @@ export function buffer1MessageHandler(
           ...state,
           state: stateEvent,
         }));
+        console.log(stateEvent);
       } else if (eventName === "LiveValuesEvent") {
+        // Parse and validate the live values event
         const liveValuesEvent = liveValuesEventSchema.parse(event);
-        const timestamp = event.ts;
-        updateStore((state) => ({
-          ...state,
-        }));
+
+        // Extract values and add to time series
+        const { lift_position, puller_speed } = liveValuesEvent.data;
+
+        const timestamp = liveValuesEvent.ts;
+        updateStore((state) => {
+          const newState = { ...state };
+          // Add lift position if not null
+          if (lift_position !== null) {
+            const timeseriesValue: TimeSeriesValue = {
+              value: lift_position,
+              timestamp,
+            };
+            newState.liftPosition = addLiftPosition(
+              state.liftPosition,
+              timeseriesValue,
+            );
+          }
+
+          // Add puller speed
+          const pullerSpeedValue: TimeSeriesValue = {
+            value: puller_speed,
+            timestamp,
+          };
+          newState.pullerSpeed = addPullerSpeed(
+            state.pullerSpeed,
+            pullerSpeedValue,
+          );
+
+          return newState;
+        });
       } else {
         handleUnhandledEventError(eventName);
       }
@@ -134,7 +218,13 @@ export const createBuffer1NamespaceStore =
   (): StoreApi<Buffer1NamespaceStore> =>
     create<Buffer1NamespaceStore>(() => {
       return {
+        // State event from server
         state: null,
+        defaultState: null,
+
+        // Time series data for live values
+        liftPosition,
+        pullerSpeed,
       };
     });
 

electron/src/machines/buffer/buffer1/useBuffer1.ts

@@ -8,7 +8,13 @@ import {
 import { buffer1SerialRoute } from "@/routes/routes";
 import { z } from "zod";
 import { useEffect, useMemo } from "react";
-import { StateEvent, Mode, useBuffer1Namespace } from "./buffer1Namespace";
+import {
+  StateEvent,
+  Mode,
+  useBuffer1Namespace,
+  pullerRegulationSchema,
+  PullerRegulation,
+} from "./buffer1Namespace";
 import { useStateOptimistic } from "@/lib/useStateOptimistic";
 import { produce } from "immer";
 import { useMachines } from "@/client/useMachines";
@@ -45,7 +51,8 @@ export function useBuffer1() {
   const machine_identification_unique = machineIdentification;
 
   // Get consolidated state and live values from namespace
-  const { state } = useBuffer1Namespace(machineIdentification);
+  const { state, defaultState, liftPosition, pullerSpeed } =
+    useBuffer1Namespace(machineIdentification);
 
   // Single optimistic state for all state management
   const stateOptimistic = useStateOptimistic<StateEvent>();
@@ -122,10 +129,102 @@ export function useBuffer1() {
     );
   };
 
+  const setCurrentInputSpeed = (current_input_speed: number) => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.current_input_speed_state.current_input_speed =
+          current_input_speed;
+      },
+      () =>
+        requestSetCurrentInputSpeed({
+          machine_identification_unique,
+          data: { SetCurrentInputSpeed: current_input_speed },
+        }),
+    );
+  };
+
+  const setPullerTargetSpeed = (targetSpeed: number) => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.puller_state.target_speed = targetSpeed;
+      },
+      () =>
+        requestPullerSetTargetSpeed({
+          machine_identification_unique: machineIdentification,
+          data: { SetPullerTargetSpeed: targetSpeed },
+        }),
+    );
+  };
+
+  const setPullerTargetDiameter = (targetDiameter: number) => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.puller_state.target_diameter = targetDiameter;
+      },
+      () =>
+        requestPullerSetTargetDiameter({
+          machine_identification_unique: machineIdentification,
+          data: { SetPullerTargetDiameter: targetDiameter },
+        }),
+    );
+  };
+
+  const setPullerRegulationMode = (regulationMode: PullerRegulation) => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.puller_state.regulation = regulationMode;
+      },
+      () =>
+        requestPullerSetRegulationMode({
+          machine_identification_unique: machineIdentification,
+          data: { SetPullerRegulationMode: regulationMode },
+        }),
+    );
+  };
+
+  const setPullerForward = (forward: boolean) => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.puller_state.forward = forward;
+      },
+      () =>
+        requestPullerSetForward({
+          machine_identification_unique: machineIdentification,
+          data: { SetPullerForward: forward },
+        }),
+    );
+  };
+
+  const gotoLiftHome = () => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.lift_state.is_going_home = true;
+      },
+      () =>
+        requestLiftGotoHome({
+          machine_identification_unique: machineIdentification,
+          data: "GotoLiftHome",
+        }),
+    );
+  };
+
+  const setLiftStepSize = (stepSize: number) => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.lift_state.step_size = stepSize;
+      },
+      () =>
+        requestLiftSetStepSize({
+          machine_identification_unique: machineIdentification,
+          data: { SetLiftStepSize: stepSize },
+        }),
+    );
+  };
+
   // Mutation hooks
   const { request: requestBufferMode } = useMachineMutation(
     z.object({
-      SetBufferMode: z.enum(["Standby", "FillingBuffer", "EmptyingBuffer"]),
+      SetBufferMode: z.enum(["Standby", "Hold", "Filling", "Emptying"]),
     }),
   );
 
@@ -141,6 +240,38 @@ export function useBuffer1() {
     }),
   );
 
+  const { request: requestSetCurrentInputSpeed } = useMachineMutation(
+    z.object({
+      SetCurrentInputSpeed: z.number(),
+    }),
+  );
+
+  const { request: requestPullerSetTargetSpeed } = useMachineMutation(
+    z.object({ SetPullerTargetSpeed: z.number() }),
+  );
+  const { request: requestPullerSetTargetDiameter } = useMachineMutation(
+    z.object({ SetPullerTargetDiameter: z.number() }),
+  );
+  const { request: requestPullerSetRegulationMode } = useMachineMutation(
+    z.object({
+      SetPullerRegulationMode: pullerRegulationSchema,
+    }),
+  );
+  const { request: requestPullerSetForward } = useMachineMutation(
+    z.object({ SetPullerForward: z.boolean() }),
+  );
+
+  const { request: requestLiftGotoHome } = useMachineMutation(
+    z.literal("GotoLiftHome"),
+  );
+  const { request: requestLiftSetStepSize } = useMachineMutation(
+    z.object({ SetLiftStepSize: z.number() }),
+  );
+
+  // Calculate loading states
+  const isLoading = stateOptimistic.isOptimistic;
+  const isDisabled = !stateOptimistic.isInitialized;
+
   // General Helper functions
   const machines = useMachines();
   // Filter machines for the correct type
@@ -176,11 +307,27 @@ export function useBuffer1() {
     filteredMachines,
     selectedMachine,
 
+    // Default state for initial values
+    defaultState: defaultState?.data,
+
     // Individual live values (TimeSeries)
+    liftPosition,
+    pullerSpeed,
+
+    // Loading states
+    isLoading,
+    isDisabled,
 
     // Action functions (verb-first)
     setBufferMode,
+    gotoLiftHome,
+    setLiftStepSize,
     setConnectedMachine,
     disconnectMachine,
+    setCurrentInputSpeed,
+    setPullerTargetSpeed,
+    setPullerTargetDiameter,
+    setPullerRegulationMode,
+    setPullerForward,
   };
 }

electron/src/machines/winder/winder2/Winder2ControlPage.tsx

@@ -50,6 +50,7 @@ export function Winder2ControlPage() {
     gotoTraverseHome,
     setSpoolAutomaticRequiredMeters,
     setSpoolAutomaticAction,
+    startBuffering,
     isLoading,
     isDisabled,
   } = useWinder2();
@@ -343,6 +344,18 @@ export function Winder2ControlPage() {
             />
           </Label>
         </ControlCard>
+        {state?.connected_machine_state.is_available && (
+          <ControlCard>
+            <TouchButton
+              variant="outline"
+              onClick={startBuffering}
+              disabled={isDisabled}
+              isLoading={isLoading}
+            >
+              Change Spool
+            </TouchButton>
+          </ControlCard>
+        )}
       </ControlGrid>
 
       {/* Reset Progress Confirmation Dialog */}

electron/src/machines/winder/winder2/useWinder.ts

@@ -154,22 +154,22 @@ export function useWinder2() {
   const { request: requestSpoolResetProgress } = useMachineMutation(
     z.literal("ResetSpoolProgress"),
   );
-
   const { request: requestSpoolAutomaticAction } = useMachineMutation(
     z.object({ SetSpoolAutomaticAction: spoolAutomaticActionModeSchema }),
   );
-
   const { request: requestConnectedMachine } = useMachineMutation(
     z.object({
       SetConnectedMachine: machineIdentificationUnique,
     }),
   );
-
   const { request: requestDisconnectedMachine } = useMachineMutation(
     z.object({
       DisconnectMachine: machineIdentificationUnique,
     }),
   );
+  const { request: requestStartBuffering } = useMachineMutation(
+    z.literal("StartBuffering"),
+  );
 
   // Helper function for optimistic updates using produce
   const updateStateOptimistically = (
@@ -550,6 +550,19 @@ export function useWinder2() {
     );
   };
 
+  const startBuffering = () => {
+    updateStateOptimistically(
+      (current) => {
+        current.data.buffer_state.buffering = true;
+      },
+      () =>
+        requestStartBuffering({
+          machine_identification_unique: machineIdentification,
+          data: "StartBuffering",
+        }),
+    );
+  };
+
   // Calculate loading states
   const isLoading = stateOptimistic.isOptimistic;
   const isDisabled = !stateOptimistic.isInitialized;
@@ -631,5 +644,6 @@ export function useWinder2() {
     setSpoolAdaptiveDeaccelerationUrgencyMultiplier,
     setConnectedMachine,
     disconnectMachine,
+    startBuffering,
   };
 }

electron/src/machines/winder/winder2/winder2Namespace.ts

@@ -133,6 +133,13 @@ export const connectedMachineStateSchema = z.object({
   is_available: z.boolean(),
 });
 
+/**
+ * Buffer state schema
+ */
+export const bufferStateSchema = z.object({
+  buffering: z.boolean(),
+});
+
 /**
  * Tension arm state schema
  */
@@ -166,6 +173,7 @@ export const stateEventDataSchema = z.object({
   spool_speed_controller_state: spoolSpeedControllerStateSchema,
   spool_automatic_action_state: spoolAutomaticActionStateSchema,
   connected_machine_state: connectedMachineStateSchema,
+  buffer_state: bufferStateSchema,
 });
 
 // ========== Event Schemas with Wrappers ==========

electron/src/routes/routes.tsx

@@ -192,12 +192,6 @@ export const buffer1ControlRoute = createRoute({
   component: () => <Buffer1ControlPage />,
 });
 
-export const mock1PresetsRoute = createRoute({
-  getParentRoute: () => mock1SerialRoute,
-  path: "presets",
-  component: () => <Mock1PresetsPage />,
-});
-
 export const aquapath1SerialRoute = createRoute({
   getParentRoute: () => machinesRoute,
   path: "aquapath1/$serial",
@@ -222,6 +216,12 @@ export const buffer1SettingsRoute = createRoute({
   component: () => <Buffer1SettingsPage />,
 });
 
+export const mock1PresetsRoute = createRoute({
+  getParentRoute: () => mock1SerialRoute,
+  path: "presets",
+  component: () => <Mock1PresetsPage />,
+});
+
 export const setupRoute = createRoute({
   getParentRoute: () => sidebarRoute,
   path: "setup",
@@ -342,7 +342,10 @@ export const rootTree = RootRoute.addChildren([
         mock1PresetsRoute,
       ]),
 
-      buffer1SerialRoute.addChildren([buffer1ControlRoute]),
+      buffer1SerialRoute.addChildren([
+        buffer1ControlRoute,
+        buffer1SettingsRoute,
+      ]),
     ]),
   ]),
 ]);

server/src/machines/buffer1/act.rs

@@ -4,9 +4,23 @@ use super::BufferV1;
 use control_core::machines::new::MachineAct;
 impl MachineAct for BufferV1 {
     fn act(&mut self, now: Instant) {
+        // sync the lift speed
+        self.sync_lift_speed(now);
+
+        // sync the puller speed
+        self.sync_puller_speed(now);
+
+        // sync the puller speed of winder
+        self.sync_winder_puller();
+
+        // check if lift state changed
+        if self.buffer_lift_controller.did_change_state() {
+            self.emit_state();
+        }
+
         // if last measurement is older than 1 second, emit a new measurement
-        if now.duration_since(self.last_measurement_emit) > Duration::from_secs_f64(1.0 / 30.0) {
-            // Emit live values at 30 FPS
+        if now.duration_since(self.last_measurement_emit) > Duration::from_secs_f64(1.0 / 60.0) {
+            // Emit live values at 60 FPS
             self.emit_live_values();
 
             self.last_measurement_emit = now;

server/src/machines/buffer1/api.rs

@@ -1,5 +1,7 @@
 use std::{sync::Arc, time::Duration};
 
+use crate::machines::buffer1::puller_speed_controller::PullerRegulationMode;
+
 use super::{BufferV1, BufferV1Mode};
 use control_core::{
     machines::{api::MachineApi, identification::MachineIdentificationUnique},
@@ -18,7 +20,12 @@ use socketioxide::extract::SocketRef;
 use tracing::instrument;
 
 #[derive(Serialize, Debug, Clone, Default)]
-pub struct LiveValuesEvent {}
+pub struct LiveValuesEvent {
+    /// lift position in mm
+    pub lift_position: Option<f64>,
+    /// puller speed in m/min
+    pub puller_speed: f64,
+}
 
 impl LiveValuesEvent {
     pub fn build(&self) -> Event<Self> {
@@ -30,6 +37,10 @@ impl LiveValuesEvent {
 pub struct StateEvent {
     /// mode state
     pub mode_state: ModeState,
+    /// lift state
+    pub lift_state: LiftState,
+    /// puller state
+    pub puller_state: PullerState,
     /// connected machine state
     pub connected_machine_state: ConnectedMachineState,
 }
@@ -53,8 +64,9 @@ pub struct ModeState {
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 pub enum Mode {
     Standby,
-    FillingBuffer,
-    EmptyingBuffer,
+    Hold,
+    Filling,
+    Emptying,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
@@ -64,6 +76,50 @@ pub struct ConnectedMachineState {
     pub is_available: bool,
 }
 
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub struct PullerState {
+    /// regulation type
+    pub regulation: PullerRegulationMode,
+    /// target speed in m/min
+    pub target_speed: f64,
+    /// target diameter in mm
+    pub target_diameter: f64,
+    /// forward rotation direction
+    pub forward: bool,
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
+pub struct LiftState {
+    /// min position in mm
+    pub limit_top: f64,
+    /// max position in mm
+    pub limit_bottom: f64,
+    /// position in mm
+    pub position_in: f64,
+    /// position out in mm
+    pub position_out: f64,
+    /// is going to position in
+    pub is_going_up: bool,
+    /// is going to position out
+    pub is_going_down: bool,
+    /// if is homed
+    pub is_homed: bool,
+    /// if is homing
+    pub is_going_home: bool,
+    /// if is buffering
+    pub is_buffering: bool,
+    /// step size in mm
+    pub step_size: f64,
+    /// padding in mm
+    pub padding: f64,
+    /// can go top (to top limit)
+    pub can_go_top: bool,
+    /// can go bottom (to bottom limit)
+    pub can_go_bottom: bool,
+    /// can home
+    pub can_go_home: bool,
+}
+
 #[derive(Deserialize, Serialize)]
 enum Mutation {
     // Mode
@@ -74,6 +130,15 @@ enum Mutation {
 
     // Disconnect Machine
     DisconnectMachine(MachineIdentificationUnique),
+
+    // Lift
+    GotoLiftHome,
+
+    // Puller
+    SetPullerRegulationMode(PullerRegulationMode),
+    SetPullerTargetSpeed(f64),
+    SetPullerTargetDiameter(f64),
+    SetPullerForward(bool),
 }
 
 #[derive(Debug)]
@@ -128,6 +193,11 @@ impl MachineApi for BufferV1 {
             Mutation::DisconnectMachine(machine_identification_unique) => {
                 self.disconnect_winder(machine_identification_unique);
             }
+            Mutation::SetPullerRegulationMode(regulation) => self.puller_set_regulation(regulation),
+            Mutation::SetPullerTargetSpeed(value) => self.puller_set_target_speed(value),
+            Mutation::SetPullerTargetDiameter(_) => todo!(),
+            Mutation::SetPullerForward(value) => self.puller_set_forward(value),
+            Mutation::GotoLiftHome => self.buffer_lift_controller.goto_home(),
         }
         Ok(())
     }

server/src/machines/buffer1/buffer_lift_controller.rs

@@ -0,0 +1,542 @@
+use std::time::Instant;
+
+use control_core::{
+    controllers::first_degree_motion::linear_acceleration_speed_controller::LinearAccelerationLimitingController,
+    converters::linear_step_converter::LinearStepConverter,
+};
+use ethercat_hal::io::{
+    digital_input::DigitalInput, stepper_velocity_el70x1::StepperVelocityEL70x1,
+};
+use tracing::info;
+use uom::{
+    ConstZero,
+    si::{
+        acceleration::centimeter_per_second_squared,
+        f64::{Acceleration, Length, Velocity},
+        length::millimeter,
+        velocity::millimeter_per_second,
+    },
+};
+
+#[derive(Debug)]
+pub struct BufferLiftController {
+    /// Whether the speed controller is enabled or not
+    enabled: bool,
+    position: Length,
+    limit_top: Length,
+    limit_bottom: Length,
+    step_size: Length,
+    padding: Length,
+    /// Stepper driver. Controls buffer stepper motor
+    pub stepper_driver: StepperVelocityEL70x1,
+    // Step Converter
+    pub fullstep_converter: LinearStepConverter,
+    pub microstep_converter: LinearStepConverter,
+
+    /// Linear acceleration controller to dampen speed change
+    acceleration_controller: LinearAccelerationLimitingController,
+
+    /// Forward rotation direction. If false, applies negative sign to speed
+    forward: bool,
+    state: State,
+
+    /// Fixed constants
+    spool_amount: u8,
+
+    /// Variables
+    current_input_speed: Velocity,
+    target_output_speed: Velocity,
+    lift_speed: Velocity,
+
+    // A sticky flag if the [`State`] changed (not the sub states)
+    // Needed to send state updates to the UI
+    did_change_state: bool,
+}
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub enum State {
+    /// Initial state
+    NotHomed,
+
+    /// Doing nothing
+    /// Already homed
+    Idle,
+
+    /// Going to upper limit
+    ///
+    /// After reaching the upper limit, the state will change to [`State::Idle`]
+    GoingUp,
+
+    /// Going to lower limit
+    ///
+    /// After reaching the lower limit, the state will change to [`State::Idle`]
+    GoingDown,
+
+    /// Homing in progress
+    ///
+    /// After homing is done, the state will change to [`State::Idle`]
+    Homing(HomingState),
+
+    /// Move at target speed to Buffer
+    Buffering(BufferingState),
+}
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub enum BufferingState {
+    GoingUp,
+    Filling,
+    Emptying,
+}
+
+#[derive(Debug, PartialEq, Eq, Clone)]
+pub enum HomingState {
+    /// In this state the lift is not moving but checks if the endstop is triggered
+    /// If the endstop is triggered we go into [`HomingState::EscapeEndstop`]
+    /// If the endstop is not triggered we go into [`HomingState::FindEndstop`]
+    Initialize,
+
+    /// In this state the lift is moving out away from the endstop until it's not triggered anymore
+    /// The it goes into [`HomingState::FindEnstopFineDistancing`]
+    EscapeEndstop,
+
+    /// Moving out away from the endstop
+    /// Then Transition into [`HomingState::FindEndtopFine`]
+    FindEnstopFineDistancing,
+
+    /// In this state the lift is fast until it reaches the endstop
+    FindEndstopCoarse,
+
+    /// In this state the lift is moving slowly until it reaches the endstop
+    FindEndStopFine,
+
+    /// In this state we check if th current position is actually 0.0, if not we redo the homing routine
+    Validate(Instant),
+}
+
+impl BufferLiftController {
+    pub fn new(
+        driver: StepperVelocityEL70x1,
+        limit_top: Length,
+        limit_bot: Length,
+        microsteps: u8,
+    ) -> Self {
+        Self {
+            enabled: false,
+            position: Length::ZERO,
+            limit_top,
+            limit_bottom: limit_bot,
+            step_size: Length::new::<millimeter>(1.75), // Default padding
+            padding: Length::new::<millimeter>(0.9),    // Default padding
+            did_change_state: false,
+            stepper_driver: driver,
+            fullstep_converter: LinearStepConverter::from_diameter(
+                200,
+                Length::new::<millimeter>(32.22),
+            ),
+            microstep_converter: LinearStepConverter::from_diameter(
+                200 * microsteps as i16,
+                Length::new::<millimeter>(32.22),
+            ),
+            spool_amount: 13,
+            state: State::NotHomed,
+            forward: true,
+            acceleration_controller: LinearAccelerationLimitingController::new_simple(
+                Acceleration::new::<centimeter_per_second_squared>(1.0),
+                Velocity::new::<millimeter_per_second>(5.0),
+            ),
+            current_input_speed: Velocity::ZERO,
+            target_output_speed: Velocity::ZERO,
+            lift_speed: Velocity::ZERO,
+        }
+    }
+}
+
+impl BufferLiftController {
+    /// Calculate the speed of the buffer lift from current input speed
+    ///
+    /// Formula: input_speed / ( 2 * spool_amount - 1 )
+    pub fn calculate_buffer_lift_speed(&self) -> Velocity {
+        let lift_speed = Velocity::new::<millimeter_per_second>(
+            (self.current_input_speed.get::<millimeter_per_second>()
+                - self.target_output_speed.get::<millimeter_per_second>())
+                / (2.0 * self.spool_amount as f64 - 1.0),
+        );
+        lift_speed
+    }
+
+    pub fn update_speed(
+        &mut self,
+        stepper_driver: &mut StepperVelocityEL70x1,
+        lift_end_stop: &DigitalInput,
+        t: Instant,
+    ) -> Velocity {
+        let speed = match self.enabled {
+            true => self.get_speed(stepper_driver, lift_end_stop),
+            false => Velocity::ZERO,
+        };
+
+        // Stepper is installed in reverse direction so we change to sign
+        let speed = speed;
+
+        self.acceleration_controller.update(speed, t)
+    }
+}
+
+/// Getter & Setter
+impl BufferLiftController {
+    pub fn set_enabled(&mut self, enabled: bool) {
+        self.enabled = enabled;
+        self.stepper_driver.set_enabled(enabled);
+    }
+
+    pub fn set_limit_top(&mut self, limit: Length) {
+        self.limit_top = limit;
+    }
+
+    pub fn set_limit_bottom(&mut self, limit: Length) {
+        self.limit_bottom = limit;
+    }
+
+    pub fn set_step_size(&mut self, step_size: Length) {
+        self.step_size = step_size;
+    }
+
+    pub fn set_padding(&mut self, padding: Length) {
+        self.padding = padding;
+    }
+
+    pub fn get_limit_top(&self) -> Length {
+        self.limit_top
+    }
+
+    pub fn get_limit_bottom(&self) -> Length {
+        self.limit_bottom
+    }
+
+    pub fn get_step_size(&self) -> Length {
+        self.step_size
+    }
+
+    pub fn get_padding(&self) -> Length {
+        self.padding
+    }
+
+    pub fn set_forward(&mut self, forward: bool) {
+        self.forward = forward;
+    }
+
+    pub fn get_current_position(&self) -> Option<Length> {
+        match self.is_homed() {
+            true => Some(self.position),
+            false => None,
+        }
+    }
+
+    pub fn did_change_state(&mut self) -> bool {
+        let did_change = self.did_change_state;
+        // Reset the flag
+        self.did_change_state = false;
+        did_change
+    }
+
+    pub fn set_current_input_speed(&mut self, speed: Velocity) {
+        self.current_input_speed = speed;
+    }
+    pub fn set_target_output_speed(&mut self, speed: Velocity) {
+        self.target_output_speed = speed;
+    }
+    pub fn get_current_input_speed(&self) -> Velocity {
+        self.current_input_speed
+    }
+    pub fn get_target_output_speed(&self) -> Velocity {
+        self.target_output_speed
+    }
+    pub fn get_lift_speed(&self) -> Velocity {
+        self.lift_speed
+    }
+}
+
+/// State management
+impl BufferLiftController {
+    pub fn goto_limit_top(&mut self) {
+        self.state = State::GoingUp
+    }
+
+    pub fn goto_limit_bottom(&mut self) {
+        self.state = State::GoingDown
+    }
+
+    pub fn goto_home(&mut self) {
+        self.state = State::Homing(HomingState::Initialize);
+    }
+
+    pub fn start_buffering(&mut self) {
+        self.state = State::Buffering(BufferingState::GoingUp);
+    }
+
+    pub fn is_going_up(&self) -> bool {
+        // [`State::GoingUp`]
+        matches!(self.state, State::GoingUp)
+    }
+
+    pub fn is_going_down(&self) -> bool {
+        // [`State::GoingDown`]
+        matches!(self.state, State::GoingDown)
+    }
+
+    pub fn is_homed(&self) -> bool {
+        // if not [`State::NotHomed`], then it is homed
+        !matches!(self.state, State::NotHomed)
+    }
+
+    pub fn is_filling(&self) -> bool {
+        // [`State::Filling`]
+        matches!(self.state, State::Buffering(BufferingState::Filling))
+    }
+
+    pub fn is_emptying(&self) -> bool {
+        // [`State::Emptying`]
+        matches!(self.state, State::Buffering(BufferingState::Emptying))
+    }
+
+    pub fn is_going_home(&self) -> bool {
+        // [`State::Homing`]
+        matches!(self.state, State::Homing(_))
+    }
+
+    pub fn is_buffering(&self) -> bool {
+        // [`State::Buffering`]
+        matches!(self.state, State::Buffering(_))
+    }
+}
+
+impl BufferLiftController {
+    // If at inner limit within a tolerance
+    fn is_at_position(&self, target_position: Length, tolerance: Length) -> bool {
+        let upper_tolerance = target_position + tolerance.abs();
+        let lower_tolerance = target_position - tolerance.abs();
+        if self.position >= lower_tolerance && self.position <= upper_tolerance {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /// Calculates distance to position
+    fn distance_to_position(&self, target_position: Length) -> Length {
+        if self.position > target_position {
+            return self.position - target_position;
+        } else if self.position < target_position {
+            return target_position - self.position;
+        } else {
+            return Length::ZERO;
+        }
+    }
+
+    // Changes the direction of the speed based on the current position and target position
+    fn speed_to_position(&self, target_position: Length, absolute_speed: Velocity) -> Velocity {
+        // If we are over the target position we need to move negative
+        if self.position > target_position {
+            return -absolute_speed.abs();
+        } else if self.position < target_position {
+            return absolute_speed.abs();
+        } else {
+            return Velocity::ZERO;
+        }
+    }
+
+    /// Gets the current lift position as a [`Length`].
+    pub fn sync_position(&mut self, stepper_driver: &StepperVelocityEL70x1) {
+        let steps = stepper_driver.get_position();
+        self.position = self.microstep_converter.steps_to_distance(steps as f64);
+    }
+
+    /// Update the [`did_change_state`] flag
+    /// Only consider the major state not the sub states
+    fn update_did_change_state(&mut self, old_state: &State) -> bool {
+        match self.state {
+            State::NotHomed => !matches!(old_state, State::NotHomed),
+            State::Idle => !matches!(old_state, State::Idle),
+            State::GoingUp => !matches!(old_state, State::GoingUp),
+            State::GoingDown => !matches!(old_state, State::GoingDown),
+            State::Homing(_) => !matches!(old_state, State::Homing(_)),
+            State::Buffering(_) => !matches!(old_state, State::Buffering(_)),
+        }
+    }
+
+    /// Calculates a desired speed based on the current state and the end stop status.
+    ///
+    /// Positive speed moves Up, negative speed moves down
+    fn get_speed(
+        &mut self,
+        stepper_driver: &mut StepperVelocityEL70x1,
+        lift_end_stop: &DigitalInput,
+    ) -> Velocity {
+        // Don't move if not enabled or in a state that doesn't result in movement
+        if !self.enabled {
+            return Velocity::ZERO;
+        }
+
+        self.sync_position(stepper_driver);
+
+        // save state before
+        let old_state = self.state.clone();
+
+        // Automatic Transitions
+        match &self.state {
+            State::NotHomed => {}
+            State::Idle => {}
+            State::GoingDown => {
+                // If lower limit is reached
+                if self.is_at_position(self.limit_bottom, Length::new::<millimeter>(0.01)) {
+                    // Put Into Idle
+                    self.state = State::Idle;
+                }
+            }
+            State::GoingUp => {
+                // If upper limit is reached
+                if self.is_at_position(self.limit_top, Length::new::<millimeter>(0.01)) {
+                    // Put Into Idle
+                    self.state = State::Idle;
+                }
+            }
+            State::Homing(homing_state) => match homing_state {
+                HomingState::Initialize => {
+                    // If endstop is triggered, escape the endstop
+                    if lift_end_stop.get_value().unwrap_or(false) == true {
+                        self.state = State::Homing(HomingState::EscapeEndstop);
+                    } else {
+                        // If endstop is not triggered, move to the endstop
+                        self.state = State::Homing(HomingState::FindEndstopCoarse);
+                    }
+                }
+                HomingState::EscapeEndstop => {
+                    // Move out until endstop is not triggered anymore
+                    if lift_end_stop.get_value().unwrap_or(false) == false {
+                        self.state = State::Homing(HomingState::FindEnstopFineDistancing);
+                    }
+                }
+                HomingState::FindEnstopFineDistancing => {
+                    // Move out until endstop is not triggered anymore
+                    if lift_end_stop.get_value().unwrap_or(false) == false {
+                        // Find endstop fine
+                        self.state = State::Homing(HomingState::FindEndStopFine);
+                    }
+                }
+                HomingState::FindEndStopFine => {
+                    // If endstop is reached change to idle
+                    if lift_end_stop.get_value().unwrap_or(false) == true {
+                        // Set poition of lift to 0
+                        stepper_driver.set_position(0);
+                        // Put Into Idle
+                        self.state = State::Homing(HomingState::Validate(Instant::now()));
+                    }
+                }
+                HomingState::FindEndstopCoarse => {
+                    // Move to endstop
+                    if lift_end_stop.get_value().unwrap_or(false) == true {
+                        // Move awaiy from endstop
+                        self.state = State::Homing(HomingState::FindEnstopFineDistancing);
+                    }
+                }
+                HomingState::Validate(instant) => {
+                    // If 100ms have passed check if position is actually 0.0
+                    if instant.elapsed().as_millis() > 100 {
+                        if self.is_at_position(Length::ZERO, Length::new::<millimeter>(0.01)) {
+                            // If position is 0.0, put into idle
+                            self.state = State::Idle;
+                        } else {
+                            // If position is not 0.0, redo homing
+                            self.state = State::Homing(HomingState::Initialize);
+                        }
+                    }
+                }
+            },
+
+            // If state changed we
+            State::Buffering(buffering_state) => match buffering_state {
+                BufferingState::GoingUp => {}
+                BufferingState::Emptying => {}
+                BufferingState::Filling => {}
+            },
+        }
+
+        // Set the [`did_change_state`] flag
+        if self.did_change_state == false {
+            self.did_change_state = self.update_did_change_state(&old_state);
+            info!("{:?}", self.state);
+        }
+
+        // Speed
+        let speed = match &self.state {
+            State::NotHomed => Velocity::ZERO, // Not homed, no movement
+            State::Idle => Velocity::ZERO,     // No movement in idle state
+            State::GoingDown => {
+                // Move down at a speed of 10-100 mm/s
+                self.speed_to_position(
+                    self.limit_bottom,
+                    match self.distance_to_position(self.limit_bottom).abs()
+                        > Length::new::<millimeter>(1.0)
+                    {
+                        true => Velocity::new::<millimeter_per_second>(100.0),
+                        false => Velocity::new::<millimeter_per_second>(10.0),
+                    },
+                )
+            }
+            State::GoingUp => {
+                // Move up at a speed of 10-100 mm/s
+                self.speed_to_position(
+                    self.limit_top,
+                    match self.distance_to_position(self.limit_top).abs()
+                        > Length::new::<millimeter>(1.0)
+                    {
+                        true => Velocity::new::<millimeter_per_second>(100.0),
+                        false => Velocity::new::<millimeter_per_second>(10.0),
+                    },
+                )
+            }
+            State::Homing(homing_state) => match homing_state {
+                HomingState::Initialize => Velocity::ZERO,
+                HomingState::EscapeEndstop => {
+                    // Move down at a speed of 10 mm/s
+                    Velocity::new::<millimeter_per_second>(10.0)
+                }
+                HomingState::FindEnstopFineDistancing => {
+                    // Move up at a speed of 2 mm/s
+                    Velocity::new::<millimeter_per_second>(2.0)
+                }
+                HomingState::FindEndstopCoarse => {
+                    // Move in at a speed of -100 mm/s
+                    Velocity::new::<millimeter_per_second>(-100.0)
+                }
+                HomingState::FindEndStopFine => {
+                    // move into the endstop at 2 mm/s
+                    Velocity::new::<millimeter_per_second>(-2.0)
+                }
+                HomingState::Validate(_) => {
+                    // We stand still until the validation cooldown has passed
+                    Velocity::ZERO
+                }
+            }, // Homing speed
+            State::Buffering(buffering_state) => match buffering_state {
+                BufferingState::GoingUp => {
+                    // Move top at a speed of 100 mm/s
+                    self.speed_to_position(
+                        self.limit_top - self.padding + Length::new::<millimeter>(0.01),
+                        Velocity::new::<millimeter_per_second>(100.0),
+                    )
+                }
+                BufferingState::Filling => self.speed_to_position(
+                    self.limit_top + self.padding - Length::new::<millimeter>(0.01),
+                    Self::calculate_buffer_lift_speed(self),
+                ),
+                BufferingState::Emptying => self.speed_to_position(
+                    self.limit_bottom - self.padding + Length::new::<millimeter>(0.01),
+                    Self::calculate_buffer_lift_speed(self),
+                ),
+            },
+        };
+        info!("{}", speed.get::<millimeter_per_second>());
+        speed
+    }
+}

server/src/machines/buffer1/buffer_tower_controller.rs

@@ -1,27 +0,0 @@
-use ethercat_hal::io::stepper_velocity_el70x1::StepperVelocityEL70x1;
-
-#[derive(Debug)]
-pub struct BufferTowerController {
-    enabled: bool,
-    /// Stepper driver. Controls buffer stepper motor
-    pub stepper_driver: StepperVelocityEL70x1,
-}
-
-impl BufferTowerController {
-    pub const fn new(driver: StepperVelocityEL70x1) -> Self {
-        Self {
-            enabled: false,
-            stepper_driver: driver,
-        }
-    }
-    pub fn set_enabled(&mut self, enabled: bool) {
-        self.enabled = enabled;
-        if enabled {
-            self.stepper_driver.set_enabled(true);
-            let _ = self.stepper_driver.set_speed(10.0);
-        } else {
-            self.stepper_driver.set_enabled(false);
-            let _ = self.stepper_driver.set_speed(0.0);
-        }
-    }
-}

server/src/machines/buffer1/mod.rs

@@ -1,35 +1,62 @@
 pub mod act;
 pub mod api;
-pub mod buffer_tower_controller;
+pub mod buffer_lift_controller;
 pub mod new;
+pub mod puller_speed_controller;
 
 use api::{Buffer1Namespace, BufferV1Events, LiveValuesEvent, ModeState, StateEvent};
-use buffer_tower_controller::BufferTowerController;
+use buffer_lift_controller::BufferLiftController;
 use control_core::{
+    converters::linear_step_converter::LinearStepConverter,
     machines::{
         ConnectedMachine, ConnectedMachineData, downcast_machine,
         identification::{MachineIdentification, MachineIdentificationUnique},
         manager::MachineManager,
     },
     socketio::namespace::NamespaceCacheingLogic,
+    uom_extensions::velocity::meter_per_minute,
 };
 use control_core_derive::Machine;
+use ethercat_hal::io::{
+    digital_input::DigitalInput, stepper_velocity_el70x1::StepperVelocityEL70x1,
+};
 use futures::executor::block_on;
+use puller_speed_controller::PullerRegulationMode;
 use serde::{Deserialize, Serialize};
 use smol::lock::{Mutex, RwLock};
 use std::{
     sync::{Arc, Weak},
     time::Instant,
 };
+use uom::{
+    ConstZero,
+    si::{
+        f64::{Length, Velocity},
+        length::millimeter,
+    },
+};
 
 use crate::machines::{
-    MACHINE_BUFFER_V1, VENDOR_QITECH, buffer1::api::ConnectedMachineState, winder2::Winder2,
+    MACHINE_BUFFER_V1, VENDOR_QITECH,
+    buffer1::{
+        api::{ConnectedMachineState, LiftState, PullerState},
+        puller_speed_controller::PullerSpeedController,
+    },
+    winder2::{BufferState, Winder2, Winder2Mode},
 };
 
 #[derive(Debug, Machine)]
 pub struct BufferV1 {
+    // drivers
+    pub lift: StepperVelocityEL70x1,
+    pub lift_end_stop: DigitalInput,
+    pub puller: StepperVelocityEL70x1,
+
     // controllers
-    pub buffer_tower_controller: BufferTowerController,
+    pub buffer_lift_controller: BufferLiftController,
+    pub puller_speed_controller: PullerSpeedController,
+
+    pub lift_step_converter: LinearStepConverter,
 
     // socketio
     namespace: Buffer1Namespace,
@@ -61,7 +88,24 @@ impl BufferV1 {
 
 impl BufferV1 {
     pub fn emit_live_values(&mut self) {
-        let live_values = LiveValuesEvent {};
+        // Calculate puller speed from current motor steps
+        let steps_per_second = self.puller.get_speed();
+        let angular_velocity = self
+            .puller_speed_controller
+            .converter
+            .steps_to_angular_velocity(steps_per_second as f64);
+        let puller_speed = self
+            .puller_speed_controller
+            .angular_velocity_to_speed(angular_velocity);
+
+        // live values to be emittet
+        let live_values = LiveValuesEvent {
+            lift_position: self
+                .buffer_lift_controller
+                .get_current_position()
+                .map(|x| x.get::<millimeter>()),
+            puller_speed: puller_speed.get::<meter_per_minute>(),
+        };
 
         let event = live_values.build();
         self.namespace.emit(BufferV1Events::LiveValues(event));
@@ -86,53 +130,199 @@ impl BufferV1 {
                     })
                     .unwrap_or(false),
             },
+            lift_state: LiftState {
+                limit_top: self
+                    .buffer_lift_controller
+                    .get_limit_top()
+                    .get::<millimeter>(),
+                limit_bottom: self
+                    .buffer_lift_controller
+                    .get_limit_bottom()
+                    .get::<millimeter>(),
+                position_in: self
+                    .buffer_lift_controller
+                    .get_limit_top()
+                    .get::<millimeter>(),
+                position_out: self
+                    .buffer_lift_controller
+                    .get_limit_bottom()
+                    .get::<millimeter>(),
+                is_going_up: self.buffer_lift_controller.is_going_up(),
+                is_going_down: self.buffer_lift_controller.is_going_down(),
+                is_homed: self.buffer_lift_controller.is_homed(),
+                is_going_home: self.buffer_lift_controller.is_going_home(),
+                is_buffering: self.buffer_lift_controller.is_buffering(),
+                step_size: self
+                    .buffer_lift_controller
+                    .get_step_size()
+                    .get::<millimeter>(),
+                padding: self
+                    .buffer_lift_controller
+                    .get_padding()
+                    .get::<millimeter>(),
+                can_go_top: self.can_go_up(),
+                can_go_bottom: self.can_go_down(),
+                can_go_home: self.can_go_home(),
+            },
+            puller_state: PullerState {
+                regulation: self.puller_speed_controller.regulation_mode.clone(),
+                target_speed: self
+                    .puller_speed_controller
+                    .target_speed
+                    .get::<meter_per_minute>(),
+                target_diameter: self
+                    .puller_speed_controller
+                    .target_diameter
+                    .get::<millimeter>(),
+                forward: self.puller_speed_controller.forward,
+            },
         };
 
         let event = state.build();
         self.namespace.emit(BufferV1Events::State(event));
     }
+
+    /// Can buffer capability check
+    pub fn can_buffer(&self) -> bool {
+        // Check if tension arm is zeroed and traverse is homed
+        self.buffer_lift_controller.is_homed() && !self.buffer_lift_controller.is_going_home()
+    }
+
+    /// Can go to upper limit capability check
+    pub fn can_go_up(&self) -> bool {
+        self.buffer_lift_controller.is_homed()
+            && self.mode != BufferV1Mode::Standby
+            && !self.buffer_lift_controller.is_going_up()
+            && !self.buffer_lift_controller.is_going_home()
+            && !self.buffer_lift_controller.is_buffering()
+            && self.mode != BufferV1Mode::Filling
+            && self.mode != BufferV1Mode::Emptying
+    }
+
+    /// Can go to lower limit capability check
+    pub fn can_go_down(&self) -> bool {
+        self.buffer_lift_controller.is_homed()
+            && self.mode != BufferV1Mode::Standby
+            && !self.buffer_lift_controller.is_going_down()
+            && !self.buffer_lift_controller.is_going_home()
+            && !self.buffer_lift_controller.is_buffering()
+            && self.mode != BufferV1Mode::Filling
+            && self.mode != BufferV1Mode::Emptying
+    }
+
+    /// Can go home capability check
+    pub fn can_go_home(&self) -> bool {
+        // Check if not in standby, not traversing
+        // Allow going home even when going in or out
+        self.mode != BufferV1Mode::Standby
+            && !self.buffer_lift_controller.is_going_home()
+            && !self.buffer_lift_controller.is_buffering()
+            && self.mode != BufferV1Mode::Filling
+            && self.mode != BufferV1Mode::Emptying
+    }
 }
 
 impl BufferV1 {
-    // To be implemented
     fn fill_buffer(&mut self) {
-        todo!();
+        // stop the winder until the buffer is full
+        self.update_winder2_mode(Winder2Mode::Hold);
+        self.update_winder2_buffer_state(BufferState::Buffering);
+        self.get_winder(|winder| {
+            winder
+                .puller_speed_controller
+                .set_buffer_speed(Velocity::ZERO);
+        });
     }
 
     fn empty_buffer(&mut self) {
-        todo!();
+        // Set the winder2 to a mode where its faster than before to empty the buffer slowly
+        self.update_winder2_mode(Winder2Mode::Wind);
+        self.update_winder2_buffer_state(BufferState::Emptying);
+        self.get_winder(|winder| {
+            winder
+                .puller_speed_controller
+                .set_buffer_speed(self.puller_speed_controller.last_speed);
+        });
+    }
+
+    fn hold_buffer(&mut self) {
+        // Hold buffer in current state input speed = output speed
+        self.update_winder2_mode(Winder2Mode::Wind);
+        self.update_winder2_buffer_state(BufferState::Hold);
+        self.get_winder(|winder| {
+            winder
+                .puller_speed_controller
+                .set_buffer_speed(self.puller_speed_controller.last_speed);
+        });
+    }
+
+    fn update_winder2_mode(&mut self, mode: Winder2Mode) {
+        self.get_winder(|winder2| {
+            if winder2.mode != mode {
+                winder2.mode = mode;
+            }
+        });
+    }
+
+    fn update_winder2_buffer_state(&mut self, state: BufferState) {
+        self.get_winder(|winder2| {
+            if winder2.buffer_state != state {
+                winder2.set_buffer_state(state);
+            }
+        });
     }
 
     // Turn off motor and do nothing
     fn switch_to_standby(&mut self) {
         match self.mode {
             BufferV1Mode::Standby => (),
-            BufferV1Mode::FillingBuffer => {}
-            BufferV1Mode::EmptyingBuffer => {}
+            BufferV1Mode::Hold => {}
+            BufferV1Mode::Filling => {}
+            BufferV1Mode::Emptying => {}
         };
         self.mode = BufferV1Mode::Standby;
-        self.buffer_tower_controller.set_enabled(false);
+        self.buffer_lift_controller.set_enabled(false);
+        let _ = self.buffer_lift_controller.stepper_driver.set_speed(0.0);
+        self.update_winder2_buffer_state(BufferState::Hold);
+    }
+
+    // hold motor
+    fn switch_to_hold(&mut self) {
+        match self.mode {
+            BufferV1Mode::Standby => self.hold_buffer(),
+            BufferV1Mode::Hold => (),
+            BufferV1Mode::Filling => {}
+            BufferV1Mode::Emptying => {}
+        };
+        self.mode = BufferV1Mode::Hold;
+        self.buffer_lift_controller.set_enabled(true);
+        let _ = self.buffer_lift_controller.stepper_driver.set_speed(0.0);
     }
 
     // Turn on motor and fill buffer
     fn switch_to_filling(&mut self) {
         match self.mode {
             BufferV1Mode::Standby => self.fill_buffer(),
-            BufferV1Mode::FillingBuffer => (),
-            BufferV1Mode::EmptyingBuffer => {}
+            BufferV1Mode::Hold => {}
+            BufferV1Mode::Filling => (),
+            BufferV1Mode::Emptying => {}
         };
-        self.mode = BufferV1Mode::FillingBuffer;
-        self.buffer_tower_controller.set_enabled(true);
+        self.mode = BufferV1Mode::Filling;
+        self.buffer_lift_controller.set_forward(true);
+        self.buffer_lift_controller.set_enabled(true);
     }
 
     // Turn on motor reverse and empty buffer
     fn switch_to_emptying(&mut self) {
         match self.mode {
             BufferV1Mode::Standby => self.empty_buffer(),
-            BufferV1Mode::FillingBuffer => {}
-            BufferV1Mode::EmptyingBuffer => (),
+            BufferV1Mode::Hold => {}
+            BufferV1Mode::Filling => {}
+            BufferV1Mode::Emptying => (),
         };
-        self.mode = BufferV1Mode::EmptyingBuffer;
+        self.mode = BufferV1Mode::Emptying;
+        self.buffer_lift_controller.set_forward(false);
+        self.buffer_lift_controller.set_enabled(true);
     }
 
     fn switch_mode(&mut self, mode: BufferV1Mode) {
@@ -142,20 +332,110 @@ impl BufferV1 {
 
         match mode {
             BufferV1Mode::Standby => self.switch_to_standby(),
-            BufferV1Mode::FillingBuffer => self.switch_to_filling(),
-            BufferV1Mode::EmptyingBuffer => self.switch_to_emptying(),
+            BufferV1Mode::Hold => self.switch_to_hold(),
+            BufferV1Mode::Filling => self.switch_to_filling(),
+            BufferV1Mode::Emptying => self.switch_to_emptying(),
         }
     }
 }
 
 impl BufferV1 {
-    fn set_mode_state(&mut self, mode: BufferV1Mode) {
+    pub fn set_mode_state(&mut self, mode: BufferV1Mode) {
         self.switch_mode(mode);
         self.emit_state();
     }
 }
 
-/// Connecting/Disconnecting machine
+// impl Winder
+impl BufferV1 {
+    pub fn sync_winder_puller(&mut self) {
+        self.get_winder(|winder| {
+            winder
+                .puller_speed_controller
+                .set_buffer_speed(self.buffer_lift_controller.get_target_output_speed());
+        });
+    }
+}
+
+// Implement Puller
+impl BufferV1 {
+    /// called by `act`
+    pub fn sync_puller_speed(&mut self, t: Instant) {
+        let angular_velocity = self.puller_speed_controller.calc_angular_velocity(t);
+        let steps_per_second = self
+            .puller_speed_controller
+            .converter
+            .angular_velocity_to_steps(angular_velocity);
+        let _ = self.puller.set_speed(steps_per_second);
+
+        // sync puller speed to lift input speed
+        let linear_velocity = self
+            .puller_speed_controller
+            .converter
+            .angular_velocity_to_velocity(angular_velocity);
+        self.buffer_lift_controller
+            .set_current_input_speed(linear_velocity);
+    }
+
+    pub fn puller_set_regulation(&mut self, puller_regulation_mode: PullerRegulationMode) {
+        self.puller_speed_controller
+            .set_regulation_mode(puller_regulation_mode);
+        self.emit_state();
+    }
+
+    /// Set target speed in m/min
+    pub fn puller_set_target_speed(&mut self, target_speed: f64) {
+        // Convert m/min to velocity
+        let target_speed = Velocity::new::<meter_per_minute>(target_speed);
+        self.puller_speed_controller.set_target_speed(target_speed);
+        self.emit_state();
+    }
+
+    /// Set target diameter in mm
+    pub fn puller_set_target_diameter(&mut self, target_diameter: f64) {
+        // Convert mm to length
+        let target_diameter = Length::new::<millimeter>(target_diameter);
+        self.puller_speed_controller
+            .set_target_diameter(target_diameter);
+        self.emit_state();
+    }
+
+    /// Set forward direction
+    pub fn puller_set_forward(&mut self, forward: bool) {
+        self.puller_speed_controller.set_forward(forward);
+        self.emit_state();
+    }
+}
+
+// Implement Lift
+impl BufferV1 {
+    pub fn sync_lift_speed(&mut self, t: Instant) {
+        let linear_velocity =
+            self.buffer_lift_controller
+                .update_speed(&mut self.lift, &self.lift_end_stop, t);
+        if self.can_move() {
+            let steps_per_second = self.lift_step_converter.velocity_to_steps(linear_velocity);
+            let _ = self.lift.set_speed(steps_per_second);
+        } else {
+            let _ = self.lift.set_speed(0.0);
+        }
+    }
+
+    fn can_move(&mut self) -> bool {
+        match self.lift_end_stop.get_value() {
+            Ok(reached) => {
+                if reached {
+                    false
+                } else {
+                    true
+                }
+            }
+            Err(_) => false,
+        }
+    }
+}
+
+// Connecting/Disconnecting machine
 impl BufferV1 {
     /// set connected winder
     pub fn set_connected_winder(
@@ -240,11 +520,34 @@ impl BufferV1 {
             }
         }
     }
+
+    /// This helper function provides an easy way
+    /// to get the machine out of the Weak Reference
+    ///
+    /// Usage:
+    ///
+    ///    self.get_winder(|winder2| {
+    ///        winder2.do_something     // Use the Winder here as usual
+    ///    });
+    fn get_winder<F, R>(&self, func: F) -> Option<R>
+    where
+        F: FnOnce(&mut Winder2) -> R,
+    {
+        self.connected_winder
+            .as_ref()?
+            .machine
+            .upgrade()
+            .map(|winder_arc| {
+                let mut winder = block_on(winder_arc.lock());
+                func(&mut winder)
+            })
+    }
 }
 
 #[derive(Deserialize, Serialize, Debug, Clone, PartialEq, Eq)]
 pub enum BufferV1Mode {
     Standby,
-    FillingBuffer,
-    EmptyingBuffer,
+    Hold,
+    Filling,
+    Emptying,
 }

server/src/machines/buffer1/new.rs

@@ -1,28 +1,33 @@
 use std::time::Instant;
 
 use anyhow::Error;
+use control_core::converters::linear_step_converter::LinearStepConverter;
 use control_core::machines::new::{
     MachineNewHardware, MachineNewParams, MachineNewTrait, validate_no_role_dublicates,
     validate_same_machine_identification_unique,
 };
-use ethercat_hal::{
-    coe::ConfigurableDevice,
-    devices::el7031_0030::coe::EL7031_0030Configuration,
-    devices::el7031_0030::pdo::EL7031_0030PredefinedPdoAssignment,
-    devices::el7041_0052::coe::EL7041_0052Configuration,
-    devices::{
-        EthercatDeviceUsed,
-        ek1100::{EK1100, EK1100_IDENTITY_A},
-        el7031_0030::{EL7031_0030, EL7031_0030_IDENTITY_A},
-        el7041_0052::{EL7041_0052, EL7041_0052_IDENTITY_A, EL7041_0052Port},
-    },
-    io::stepper_velocity_el70x1::StepperVelocityEL70x1,
-    shared_config,
-    shared_config::el70x1::{EL70x1OperationMode, StmMotorConfiguration},
+use control_core::uom_extensions::velocity::meter_per_minute;
+use ethercat_hal::coe::ConfigurableDevice;
+use ethercat_hal::devices::EthercatDeviceUsed;
+use ethercat_hal::devices::ek1100::EK1100;
+use ethercat_hal::devices::ek1100::EK1100_IDENTITY_A;
+use ethercat_hal::devices::el7031_0030::coe::EL7031_0030Configuration;
+use ethercat_hal::devices::el7031_0030::pdo::EL7031_0030PredefinedPdoAssignment;
+use ethercat_hal::devices::el7031_0030::{
+    EL7031_0030, EL7031_0030_IDENTITY_A, EL7031_0030StepperPort,
 };
+use ethercat_hal::devices::el7041_0052::coe::EL7041_0052Configuration;
+use ethercat_hal::devices::el7041_0052::{EL7041_0052, EL7041_0052_IDENTITY_A, EL7041_0052Port};
+use ethercat_hal::io::digital_input::DigitalInput;
+use ethercat_hal::io::stepper_velocity_el70x1::StepperVelocityEL70x1;
+use ethercat_hal::shared_config;
+use ethercat_hal::shared_config::el70x1::{EL70x1OperationMode, StmMotorConfiguration};
+use uom::si::f64::{Length, Velocity};
+use uom::si::length::{centimeter, millimeter};
 
 use crate::machines::buffer1::BufferV1Mode;
-use crate::machines::buffer1::buffer_tower_controller::BufferTowerController;
+use crate::machines::buffer1::buffer_lift_controller::BufferLiftController;
+use crate::machines::buffer1::puller_speed_controller::PullerSpeedController;
 use crate::machines::get_ethercat_device;
 
 use super::{BufferV1, api::Buffer1Namespace};
@@ -76,7 +81,7 @@ impl MachineNewTrait for BufferV1 {
             el7041
                 .write()
                 .await
-                .write_config(&subdevice, &el7041_config)
+                .write_config(subdevice, &el7041_config)
                 .await?;
             {
                 let mut device_guard = el7041.write().await;
@@ -111,7 +116,7 @@ impl MachineNewTrait for BufferV1 {
             el7031
                 .write()
                 .await
-                .write_config(&subdevice, &el7031_config)
+                .write_config(subdevice, &el7031_config)
                 .await?;
             {
                 let mut device_guard = el7031.write().await;
@@ -119,11 +124,19 @@ impl MachineNewTrait for BufferV1 {
             }
 
             // Controller
-            let buffer_tower_controller = BufferTowerController::new(StepperVelocityEL70x1::new(
-                el7041.clone(),
-                EL7041_0052Port::STM1,
-            ));
+            let buffer_lift_controller = BufferLiftController::new(
+                StepperVelocityEL70x1::new(el7041.clone(), EL7041_0052Port::STM1),
+                Length::new::<centimeter>(135.0),
+                Length::new::<centimeter>(0.0),
+                64,
+            );
+            let puller_speed_controller = PullerSpeedController::new(
+                Velocity::new::<meter_per_minute>(1.0),
+                Length::new::<millimeter>(1.75),
+                LinearStepConverter::from_diameter(200, Length::new::<centimeter>(8.0)),
+            );
 
+            // Get machine identification unique
             let machine_id = params
                 .device_group
                 .first()
@@ -133,11 +146,19 @@ impl MachineNewTrait for BufferV1 {
                 .clone();
 
             // create buffer instance
-            let mut buffer: Self = Self {
+            let mut buffer = Self {
+                lift: StepperVelocityEL70x1::new(el7041.clone(), EL7041_0052Port::STM1),
+                lift_end_stop: DigitalInput::new(el7041, EL7041_0052Port::DI1),
+                puller: StepperVelocityEL70x1::new(el7031.clone(), EL7031_0030StepperPort::STM1),
+                lift_step_converter: LinearStepConverter::from_diameter(
+                    200,
+                    Length::new::<millimeter>(32.22),
+                ),
                 namespace: Buffer1Namespace::new(params.socket_queue_tx.clone()),
                 last_measurement_emit: Instant::now(),
                 mode: BufferV1Mode::Standby,
-                buffer_tower_controller,
+                buffer_lift_controller,
+                puller_speed_controller,
                 machine_manager: params.machine_manager.clone(),
                 machine_identification_unique: machine_id,
                 connected_winder: None,

server/src/machines/buffer1/puller_speed_controller.rs

@@ -0,0 +1,119 @@
+use std::time::Instant;
+
+use control_core::{
+    controllers::second_degree_motion::linear_jerk_speed_controller::LinearJerkSpeedController,
+    converters::linear_step_converter::LinearStepConverter,
+    uom_extensions::{
+        acceleration::meter_per_minute_per_second, jerk::meter_per_minute_per_second_squared,
+        velocity::meter_per_minute,
+    },
+};
+use serde::{Deserialize, Serialize};
+use uom::{
+    ConstZero,
+    si::f64::{Acceleration, AngularVelocity, Jerk, Length, Velocity},
+};
+
+#[derive(Debug)]
+pub struct PullerSpeedController {
+    enabled: bool,
+    pub target_speed: Velocity,
+    pub target_diameter: Length,
+    pub regulation_mode: PullerRegulationMode,
+    /// Forward rotation direction. If false, applies negative sign to speed
+    pub forward: bool,
+    /// Linear acceleration controller to dampen speed change
+    acceleration_controller: LinearJerkSpeedController,
+    /// Converter for linear to angular transformations
+    pub converter: LinearStepConverter,
+    pub last_speed: Velocity,
+}
+
+impl PullerSpeedController {
+    pub fn new(
+        target_speed: Velocity,
+        target_diameter: Length,
+        converter: LinearStepConverter,
+    ) -> Self {
+        let acceleration = Acceleration::new::<meter_per_minute_per_second>(5.0);
+        let jerk = Jerk::new::<meter_per_minute_per_second_squared>(10.0);
+        let speed = Velocity::new::<meter_per_minute>(50.0);
+
+        Self {
+            enabled: false,
+            target_speed,
+            target_diameter,
+            regulation_mode: PullerRegulationMode::Speed,
+            forward: true,
+            acceleration_controller: LinearJerkSpeedController::new_simple(
+                Some(speed),
+                acceleration,
+                jerk,
+            ),
+            converter,
+            last_speed: Velocity::ZERO,
+        }
+    }
+
+    pub fn set_enabled(&mut self, enabled: bool) {
+        self.enabled = enabled;
+    }
+
+    pub fn set_target_speed(&mut self, target: Velocity) {
+        self.target_speed = target;
+    }
+
+    pub fn set_target_diameter(&mut self, target: Length) {
+        self.target_diameter = target;
+    }
+
+    pub fn set_regulation_mode(&mut self, regulation: PullerRegulationMode) {
+        self.regulation_mode = regulation;
+    }
+
+    pub fn set_forward(&mut self, forward: bool) {
+        self.forward = forward;
+    }
+
+    fn update_speed(&mut self, t: Instant) -> Velocity {
+        let speed = match self.enabled {
+            true => match self.regulation_mode {
+                PullerRegulationMode::Speed => self.target_speed,
+                PullerRegulationMode::Diameter => unimplemented!(),
+            },
+            false => Velocity::ZERO,
+        };
+
+        let speed = if self.forward { speed } else { -speed };
+
+        let speed = self.acceleration_controller.update(speed, t);
+
+        self.last_speed = speed;
+        speed
+    }
+
+    pub fn speed_to_angular_velocity(&self, speed: Velocity) -> AngularVelocity {
+        // Use the converter to transform from linear velocity to angular velocity
+        self.converter.velocity_to_angular_velocity(speed)
+    }
+
+    pub fn angular_velocity_to_speed(&self, angular_speed: AngularVelocity) -> Velocity {
+        // Use the converter to transform from angular velocity to linear velocity
+        self.converter.angular_velocity_to_velocity(angular_speed)
+    }
+
+    pub fn calc_angular_velocity(&mut self, t: Instant) -> AngularVelocity {
+        let speed = self.update_speed(t);
+        self.speed_to_angular_velocity(speed)
+    }
+
+    pub fn get_target_speed(&self) -> Velocity {
+        self.target_speed
+    }
+}
+
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum PullerRegulationMode {
+    Speed,
+    Diameter,
+}

server/src/machines/winder2/act.rs

@@ -1,6 +1,7 @@
+use std::time::{Duration, Instant};
+
 use super::Winder2;
 use control_core::machines::new::MachineAct;
-use std::time::{Duration, Instant};
 
 impl MachineAct for Winder2 {
     fn act(&mut self, now: Instant) {
@@ -20,10 +21,17 @@ impl MachineAct for Winder2 {
             self.emit_state();
         }
 
+        // sync the puller speed to the buffer output speed
+        self.sync_buffer_speed();
+
         // more than 33ms have passed since last emit (30 "fps" target)
         if now.duration_since(self.last_measurement_emit) > Duration::from_secs_f64(1.0 / 30.0) {
             self.emit_live_values();
             self.last_measurement_emit = now;
+            // check if traverse state changed
+            if self.traverse_controller.did_change_state() {
+                self.emit_state();
+            }
         }
     }
 }

server/src/machines/winder2/api.rs

@@ -103,6 +103,9 @@ enum Mutation {
 
     // Disconnect Machine
     DisconnectMachine(MachineIdentificationUnique),
+
+    // Connected Buffer
+    StartBuffering(),
 }
 
 #[derive(Serialize, Debug, Clone, Default)]
@@ -304,7 +307,9 @@ impl MachineApi for Winder2 {
             Mutation::GotoTraverseLimitInner => self.traverse_goto_limit_inner(),
             Mutation::GotoTraverseHome => self.traverse_goto_home(),
             Mutation::SetPullerRegulationMode(regulation) => self.puller_set_regulation(regulation),
-            Mutation::SetPullerTargetSpeed(value) => self.puller_set_target_speed(value),
+            Mutation::SetPullerTargetSpeed(value) => {
+                self.puller_set_target_speed(value);
+            }
             Mutation::SetPullerTargetDiameter(_) => todo!(),
             Mutation::SetPullerForward(value) => self.puller_set_forward(value),
             Mutation::SetSpoolRegulationMode(mode) => self.spool_set_regulation_mode(mode),
@@ -337,6 +342,7 @@ impl MachineApi for Winder2 {
             Mutation::DisconnectMachine(machine_identification_unique) => {
                 self.disconnect_buffer(machine_identification_unique)
             }
+            Mutation::StartBuffering() => self.start_buffering(),
         }
         Ok(())
     }

server/src/machines/winder2/mod.rs

@@ -84,6 +84,8 @@ pub struct Winder2 {
     // machine connection
     pub machine_manager: Weak<RwLock<MachineManager>>,
     pub machine_identification_unique: MachineIdentificationUnique,
+    // Buffer State
+    pub buffer_state: BufferState,
 
     // connected machines
     pub connected_buffer: Option<ConnectedMachine<Weak<Mutex<BufferV1>>>>,
@@ -391,7 +393,7 @@ impl Winder2 {}
 
 /// Implement Mode
 impl Winder2 {
-    fn set_mode(&mut self, mode: &Winder2Mode) {
+    pub fn set_mode(&mut self, mode: &Winder2Mode) {
         let should_update = *mode != Winder2Mode::Wind || self.can_wind();
 
         if should_update {
@@ -779,8 +781,37 @@ impl Winder2 {
     }
 }
 
-/// implement machine connection
+/// Buffer
 impl Winder2 {
+    /// Sync Puller to Buffer
+    pub fn sync_buffer_speed(&mut self) {
+        // send puller speed to buffer, if connected
+        self.get_buffer(|buffer| {
+            buffer
+                .buffer_lift_controller
+                .set_target_output_speed(self.puller_speed_controller.get_target_speed());
+        });
+    }
+
+    /// Start Buffering Process
+    pub fn start_buffering(&mut self) {
+        // change winder's Buffer state to Buffering
+        self.set_buffer_state(BufferState::Buffering);
+
+        self.puller_speed_controller
+            .set_regulation_mode(PullerRegulationMode::Buffer);
+        // change Buffer state to Filling
+        self.get_buffer(|buffer| {
+            buffer.set_mode_state(super::buffer1::BufferV1Mode::Filling);
+        });
+    }
+
+    /// Set Buffer State
+    pub fn set_buffer_state(&mut self, state: BufferState) {
+        self.buffer_state = state;
+    }
+
+    /// Buffer Connection Logic
     /// set connected buffer
     pub fn set_connected_buffer(
         &mut self,
@@ -863,6 +894,28 @@ impl Winder2 {
             }
         }
     }
+
+    /// This helper function provides an easy way
+    /// to get the machine out of the Weak Reference
+    ///
+    /// Usage:
+    ///
+    ///    self.get_buffer(|buffer| {
+    ///        buffer.do_something     // Use the Buffer here as usual
+    ///    });
+    fn get_buffer<F, R>(&self, func: F) -> Option<R>
+    where
+        F: FnOnce(&mut BufferV1) -> R,
+    {
+        self.connected_buffer
+            .as_ref()?
+            .machine
+            .upgrade()
+            .map(|buffer_arc| {
+                let mut buffer = block_on(buffer_arc.lock());
+                func(&mut buffer)
+            })
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -927,6 +980,14 @@ impl From<Winder2Mode> for PullerMode {
     }
 }
 
+#[derive(Debug, Clone, PartialEq)]
+pub enum BufferState {
+    Disconnected,
+    Hold,
+    Buffering,
+    Emptying,
+}
+
 impl std::fmt::Display for Winder2 {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "Winder2")

server/src/machines/winder2/new.rs

@@ -4,6 +4,7 @@ use super::api::Winder2Namespace;
 use super::tension_arm::TensionArm;
 use super::{Winder2, Winder2Mode};
 use crate::machines::get_ethercat_device;
+use crate::machines::winder2::BufferState;
 use crate::machines::winder2::puller_speed_controller::PullerSpeedController;
 use crate::machines::winder2::spool_speed_controller::SpoolSpeedController;
 use crate::machines::winder2::traverse_controller::TraverseController;
@@ -228,6 +229,7 @@ impl MachineNewTrait for Winder2 {
                 machine_manager: params.machine_manager.clone(),
                 machine_identification_unique: machine_id,
                 connected_buffer: None,
+                buffer_state: BufferState::Disconnected,
             };
 
             // initalize events

server/src/machines/winder2/puller_speed_controller.rs

@@ -19,11 +19,12 @@ pub struct PullerSpeedController {
     enabled: bool,
     pub target_speed: Velocity,
     pub target_diameter: Length,
+    pub buffer_speed: Velocity,
     pub regulation_mode: PullerRegulationMode,
     /// Forward rotation direction. If false, applies negative sign to speed
     pub forward: bool,
     /// Linear acceleration controller to dampen speed change
-    acceleration_controller: LinearJerkSpeedController,
+    pub acceleration_controller: LinearJerkSpeedController,
     /// Converter for linear to angular transformations
     pub converter: LinearStepConverter,
     pub last_speed: Velocity,
@@ -43,6 +44,7 @@ impl PullerSpeedController {
             enabled: false,
             target_speed,
             target_diameter,
+            buffer_speed: Velocity::ZERO,
             regulation_mode: PullerRegulationMode::Speed,
             forward: true,
             acceleration_controller: LinearJerkSpeedController::new_simple(
@@ -67,6 +69,10 @@ impl PullerSpeedController {
         self.target_diameter = target;
     }
 
+    pub fn set_buffer_speed(&mut self, speed: Velocity) {
+        self.buffer_speed = speed;
+    }
+
     pub const fn set_regulation_mode(&mut self, regulation: PullerRegulationMode) {
         self.regulation_mode = regulation;
     }
@@ -80,6 +86,7 @@ impl PullerSpeedController {
             true => match self.regulation_mode {
                 PullerRegulationMode::Speed => self.target_speed,
                 PullerRegulationMode::Diameter => unimplemented!(),
+                PullerRegulationMode::Buffer => self.buffer_speed,
             },
             false => Velocity::ZERO,
         };
@@ -116,4 +123,5 @@ impl PullerSpeedController {
 pub enum PullerRegulationMode {
     Speed,
     Diameter,
+    Buffer,
 }