Lecture Notes: Encoder and Arduino System Integration

Overview

• Purpose: Prepare students for a breakout session or experiment by explaining the integration of components in a system.
• Main Components: Encoder, Arduino, Digital-to-Analog Converter (DAC), Motor Controller, Power Supply.

System Components and Connections

Encoder

• Role: Measures the angle the disc has moved.
• Connection: Sends angle information to the Arduino.
• Channels: Two channels (A and B) send voltage ticks when the disc moves by a certain angle.
  • Count: 1,000 counts per rotation.
  • Arduino Pins: Connected to pins 2 and 3 on the Arduino.

Arduino

• Voltage Supply: Provides 5V to power the Encoder and DAC.
• Data Communication:
  • Pins: SCL (Serial Clock Line) and SDA (Data Line)
  • Function: Send data to DAC for voltage conversion.

Digital-to-Analog Converter (DAC)

• Function: Converts digital voltage signals from Arduino to analog voltage for motor control.
• Power: Powered by 5V from Arduino.
• Connections:
  • SCL and SDA: Connect to corresponding pins on Arduino.
  • Ground: Shares a common ground with Arduino.
  • Output Pin: V_OUT sends the voltage signal to the Motor Controller.

Motor Controller

• Function: Provides the real voltage to the motor based on signals from the DAC.
• Inputs:
  • Signal from DAC: Determines the fraction of the 24V supply to deliver to the motor.
  • Power Supply: Receives input from a 24V supply.
  • Ground: Connected to a common ground channel.

Power Supply

• Specification: 24V supply.
• Role: Provides power input to the Motor Controller.
• Power Resistor: Used to measure voltage, valued at 0.01 ohm for accuracy.

Questions and Interaction

• Open floor for questions.
• Clarification and further explanations are encouraged.

Conclusion

• Comprehensive understanding of how components are interconnected in the system.
• Preparedness for practical applications in breakout sessions or experiments.