How to Use T encoder Pro: Examples, Pinouts, and Specs

The T Encoder Pro by LillyGo is a high-precision rotary encoder designed to measure the position or speed of a rotating object. It converts the angular position of a shaft or axle into an analog or digital signal, making it an essential component in various applications such as robotics, industrial automation, and motor control systems.

• Robotics: For precise control of robotic arms and wheels.
• Industrial Automation: Monitoring and controlling the position of machinery.
• Motor Control Systems: Measuring the speed and position of motors.
• CNC Machines: Ensuring accurate positioning of cutting tools.
• Consumer Electronics: Volume control in audio equipment.

1. Power Supply: Connect the VCC pin to a 3.3V or 5V power supply and the GND pin to the ground.
2. Output Channels: Connect the A and B output pins to the corresponding input pins on your microcontroller or other processing unit.
3. Switch Output (Optional): If your application requires a switch, connect the SW pin to an input pin on your microcontroller.

• Debouncing: Rotary encoders can produce noisy signals. Implement debouncing in your code to ensure accurate readings.
• Pull-up Resistors: Use pull-up resistors on the output pins to ensure stable signals.
• Mounting: Securely mount the encoder to avoid mechanical vibrations that can affect accuracy.
• Temperature Range: Ensure the operating environment is within the specified temperature range (-20°C to 85°C).

// Include the Encoder library
#include <Encoder.h>

// Define the pins for the encoder
#define ENCODER_PIN_A 2
#define ENCODER_PIN_B 3

// Create an Encoder object
Encoder myEncoder(ENCODER_PIN_A, ENCODER_PIN_B);

long oldPosition  = -999;

void setup() {
  // Initialize serial communication
  Serial.begin(9600);
  Serial.println("Basic Encoder Test:");
}

void loop() {
  // Read the current position of the encoder
  long newPosition = myEncoder.read();
  
  // If the position has changed, print the new position
  if (newPosition != oldPosition) {
    oldPosition = newPosition;
    Serial.println(newPosition);
  }
}

1. No Output Signal:

   • Solution: Check the power supply connections and ensure the encoder is properly connected to the microcontroller.

2. Inaccurate Readings:

   • Solution: Implement debouncing in your code and use pull-up resistors on the output pins.

3. Mechanical Noise:

   • Solution: Securely mount the encoder to minimize vibrations and mechanical noise.

• Check Connections: Ensure all connections are secure and correct.
• Use a Stable Power Supply: Fluctuations in the power supply can affect the encoder's performance.
• Implement Software Debouncing: Use software techniques to filter out noise and ensure accurate readings.

By following this documentation, users can effectively integrate the T Encoder Pro into their projects, ensuring accurate and reliable measurements of rotational position and speed.