Rotary Encoder Project

Project Overview

The Rotary Encoder project demonstrates how to interface a rotary encoder with an Arduino Mega to detect rotational movements and button presses. Rotary encoders are useful for applications where precise rotational control or user input is required.

Components Needed

• Arduino Mega
• Rotary Encoder
• Jumper Wires

Block Diagram

Circuit Setup

1. Connecting the Rotary Encoder to Arduino Mega:
   • CLK_PIN: Connected to digital pin 2 on the Arduino Mega.
   • DT_PIN: Connected to digital pin 3 on the Arduino Mega.
   • SW_PIN: Connected to digital pin 4 on the Arduino Mega.
   • +V and GND: Connected to 5V and GND on the Arduino Mega respectively.

Instructions

1. Code Upload:

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

2. Testing:

   • Open the Serial Monitor in the Arduino IDE (set to 9600 baud).
   • Rotate the rotary encoder clockwise and counterclockwise.
   • Press the encoder switch to see "Switch pressed!" messages.

Applications

• Menu Selection: Use the encoder for navigating menus.
• Volume Control: Adjust audio volume based on encoder rotation.
• User Input: Capture user input for parameter adjustments.

Notes

• Interrupts: Use of interrupts ensures accurate detection of encoder movements without missing steps.
• Debounce: A debounce delay is used to avoid false triggering of the encoder switch.

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