Winding Machine - README

Overview

The Winding Machine automates the process of winding spools to specific lengths of wire or material. It uses a combination of sensors, a rotary encoder, and a motor control mechanism to ensure precision and user configurability.

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Features

• Adjustable Length Settings: Select lengths of 3m, 6m, 9m, 12m, or 15m using the rotary encoder.
• Phototransistor Monitoring: Ensures accurate detection of winding turns.
• OLED Display: Provides real-time feedback on selected length and operational status.
• Button Control: Single button to start the winding process.
• Motor Control: Automates the winding process with precise stops.

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Hardware Interface

Pins:

• Photo Transistor Pin: 2 (Input) - Reads spool rotations.
• Button Pin: 4 (Input) - Starts the operation.
• Motor Pin: 8 (Output) - Controls motor operation.
• Rotary Encoder:
  • CLK: Pin 5
  • DT: Pin 6
  • SW: Pin 7
• OLED Display:
  • Uses I2C address 0x3C.

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Modes of Operation

1. Idle Mode:

   • The machine displays a welcome message and awaits a button press to begin.
   • Rotary encoder can adjust the target length in this mode.

2. Active Mode:

   • Once the button is pressed, the motor starts winding the spool until the selected length is reached.
   • The OLED displays the current progress and length settings.

3. Completion Mode:

   • The motor stops automatically when the target length is reached.
   • The machine resets, ready for the next operation.

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Operation Instructions

1. Power On:
   • Connect the machine to power. The OLED screen will display the startup message.
2. Set Length:
   • Use the rotary encoder to choose a winding length (3m, 6m, 9m, 12m, or 15m).
   • The current selection is shown on the OLED.
3. Start Operation:
   • Press the button to begin winding.
   • The motor will run, and the phototransistor will monitor the turns.
4. Completion:
   • The motor stops automatically at the selected length. The machine returns to Idle Mode.

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Notes

• Turn Values: The turnValueX constants define the number of phototransistor pulses for each length setting.
• Rotary Encoder Debouncing: Rotary encoder inputs are debounced to avoid miscounts.
• Button Debouncing: Button input includes a debounce delay of 50ms.

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Troubleshooting

• Motor Does Not Start:
  • Check the button connection.
  • Ensure the motor pin (8) is correctly wired.
• Incorrect Length:
  • Verify phototransistor alignment.
  • Check the turnValueX constants for proper calibration.
• Display Issues:
  • Ensure OLED connections are secure.
  • Confirm I2C address is set to 0x3C in the code.

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Code Overview

Key Functions

• WriteToDisplay():
  • Updates the OLED display with current operation status.
• CheckTurnValue():
  • Maps rotary encoder values to target lengths.
• Main Loop:
  • Manages the state transitions and motor control.

Constants

• turnValueX: Defines the number of turns for each length.
• Pin assignments: Defined at the start of the code for easy modification.

[](https://www.youtube.com/watch?v=5cZJSIIY1SE