Arduino Full Stack
  • Preface
  • Part 1 - Introduction
  • Chapter 1. Getting Started with Arduino
    • 1.1 Arduino UNO R3
    • 1.2 LVR Arduino Exntesion Board
    • 1.3 Sensor Kits for Arduino
    • 1.4 Race Car Chassis Model
    • 1.5 Arduino Online Resource
    • 1.6 Arduino IDE for Prototyping
    • 1.7 FIRST Arduino Project - Hello World
  • Chapter 2. Programming Grammar
    • 2.1 AVR C
    • 2.2 Digital IO
    • 2.3 Analog IO
    • 2.4 More About IO
    • 2.5 Time Functions
    • 2.6 Interrupt Functions
    • 2.7 Communication Classes
    • 2.8 Arduino Libraries
  • Part 2 - Sensors
  • Chapter 3. LED Sensors
    • 3.1 LED Blinking
    • 3.2 LED SMD RGB
    • 3.3 Mini LED Red Green GND-Shared
    • 3.4 LED RGB GND-Shared
    • 3.5 Photoresistor
    • 3.6 LED Light Cup
    • 3.7 LED Red Green GND-Shared
    • 3.8 LED 7 Colors
  • Chapter 4. Infrared Sensors
    • 4.1 Infrared Emitter and Receiver
    • 4.2 Laser Emitter
    • 4.3 Infrared Remote Control
    • 4.4 IR Obstacle Avoidance
    • 4.5 IR Line Tracking
  • Chapter 5. Audio Sensors
    • 5.1 Passive Buzzer
    • 5.2 Active Buzzer
    • 5.3 Microphone Big Sound
    • 5.4 Microphone
  • Chapter 6. Magnetic Sensors
    • 6.1 Hall Magnetic Sensor
    • 6.2 Mini Reed
    • 6.3 Linear Hall Magnetic Sensor
    • 6.4 Reed
    • 6.5 Analog Hall
  • Chapter 7. Touch Sensors
    • 7.1 Tap Sensor
    • 7.2 Shock Sensor
    • 7.3 Touch Sensor
  • Chapter 8. Thermist Sensors
    • 8.1 Temperature Sensor - DS18B20
    • 8.2 Analog Thermister
    • 8.3 Digital Temperature
    • 8.4 Temperature and Humidity Sensor
  • Chapter 9. Switches
    • 9.1 Button
    • 9.2 Switch -Mercury Tilt
    • 9.3 Switch - Ball
    • 9.4 Relay
  • Chapter 10. Other Sensors
    • 10.1 Joystick
    • 10.2 Flame
    • 10.3 Pulse Monitor
    • 10.4 Rotary Encoders
  • Chapter 11. More Discussions on Sensors
    • 11.1 Arducam
    • 11.2 IMU - BNO055
  • Part 3 - Motors
  • Chapter 12. Motors
    • 12.1 DC Motor
    • 12.2 AC Motor
    • 12.3 Stepper Motor
    • 12.4 Servo Motor
  • Part 4 - Display
  • Chapter 13. Display
    • 13.1 Nixie Light LG5011B
    • 13.2 Crystal Display 1602A
    • 13.3 Crystal Display 12864
  • Part 5 - Communication
  • Chapter 14. Communication
    • 14.1 Serial
    • 14.2 Wifi - ESP8266
    • 14.3 Bluetooth
    • 14.4 Integrate Wifi & Bluetooth - ESP32
  • Part 6 - Arduino Based Mini Automated Vehicle
  • Chapter 15. Assemble a Mini Automated Vehicle
    • 15.1 4-Wheel DC-Motor Driven
    • 15.2 Arduino UNO and LVR Arduino Extension Board
    • 15.3 Speed Sensors
    • 15.4 Servo Motor for Pan Tilt Control
    • 15.5 Tracking Sensor
  • Chapter 16. Remote Control
    • 16.1 IR Remote Control
    • 16.2 Bluetooth Remote Control
    • 16.3 Wifi Remote Control
    • 16.4 Automatic Control
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  • Hardware Wiring
  • Sketch
  1. Chapter 10. Other Sensors

10.4 Rotary Encoders

Previous10.3 Pulse MonitorNextChapter 11. More Discussions on Sensors

Last updated 6 years ago

Hardware Wiring

Sketch

The code can be found at Examples_Arduino - sensor-kit-for-arduino - _036_RotaryEncoders - _036_RotaryEncoders.ino.

const int interruptA = 0;       // Interrupt 0 - pin 2
const int interruptB = 1;       // Interrupt 1 - pin 3  NO USE

int CLK = 2;     // PIN2
int DAT = 3;     // PIN3
int BUTTON = 4;  // PIN4
int LED1 = 5;    // PIN5
int LED2 = 6;    // PIN6
int COUNT = 0;

void setup() 
 {
  attachInterrupt(interruptA, RoteStateChanged, FALLING);
 // attachInterrupt(interruptB, buttonState, FALLING);
  pinMode(CLK, INPUT); 
  digitalWrite(2, HIGH);  // Pull High Restance  
  pinMode(DAT, INPUT); 
  digitalWrite(3, HIGH);  // Pull High Restance 
  pinMode(BUTTON, INPUT); 
  digitalWrite(4, HIGH);  // Pull High Restance
  pinMode(LED1, OUTPUT); 
  pinMode(LED2, OUTPUT); 
   Serial.begin(9600);
 }

void loop() 
{
  if  (!(digitalRead(BUTTON))) 
    {
     COUNT = 0;  
     Serial.println("STOP COUNT = 0");
     digitalWrite(LED1, LOW);
     digitalWrite(LED2, LOW);
     delay (2000);
    }
     Serial.println(COUNT);  
}

//-------------------------------------------
void RoteStateChanged() //When CLK  FALLING READ DAT
{
 if  (digitalRead(DAT)) // When DAT = HIGH IS FORWARD
   {
    COUNT++;
    digitalWrite(LED1, HIGH);
    digitalWrite(LED2, LOW);
    delay(20);
   }
 else                   // When DAT = LOW IS BackRote
   {
    COUNT--;
    digitalWrite(LED2, HIGH);
    digitalWrite(LED1, LOW);
    delay(20);
   }
}
Rotary Encoders