Arduino Nano Rotary Encoder

Project Overview

This project demonstrates how to use a rotary encoder with an Arduino Nano to measure rotation and detect button presses. A rotary encoder converts the angular position or rotation of a shaft into digital signals, which can be used to track position changes or user inputs.

Components Needed

• Arduino Nano
• Rotary Encoder Module
• Jumper Wires

Block diagram

Circuit Setup

1. Connect Rotary Encoder Module to Arduino Nano:
   • CLK Pin: Connect to digital pin 2 on Arduino Nano.
   • DT Pin: Connect to digital pin 3 on Arduino Nano.
   • SW Pin: Connect to digital pin 4 on Arduino Nano.
   • + Pin: Connect to 5V on Arduino Nano.
   • GND Pin: Connect to GND on Arduino Nano.

Instructions

1. Circuit Setup:

   • Connect the rotary encoder module to the Arduino Nano as described in the circuit setup section.

2. Code Upload:

   • Open the Arduino IDE and create a new sketch.
   • Copy and paste the provided Arduino code into the sketch.

3. Testing:

   • Upload the code to the Arduino Nano.
   • Open the serial monitor with a baud rate of 9600.
   • Rotate the encoder shaft. Observe the serial monitor output displaying the current position of the encoder.

Applications

• User Input: Use for controlling menu navigation or parameter adjustments in projects.
• Position Tracking: Implement in projects requiring precise position tracking or measurement.
• Interface Control: Useful for user interface elements where rotary input is preferred.

Notes

• Ensure the rotary encoder module is correctly connected to the Arduino Nano and powered.
• Modify the code to include additional functionality, such as detecting button presses (using the SW pin).
• Adjust the debounce delay (delay(1)) in the handleEncoder function if necessary to debounce the encoder signal.

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