The Diyode Codeshield

The switch turns the light on and off, the potentiometer controls the brightness.

Hardware used:

• Switch
• Potentiometer
• LED

Code Used:

• If statement
• analogWrite
• analogRead
• digitalRead

#define ENCODER_A 14
#define ENCODER_B 15
#define ENCODER_PORT PINC
#define SWITCH 13
#define BUTTON 12
#define RGB_RED 11
#define RGB_GREEN 10
#define RGB_BLUE 9
#define LED 6
#define SERVO 5
#define PIEZO 3
#define RELAY 2
#define POT 2
#define HALL 3
#define THERMISTOR 4
#define PHOTOCELL 5
 
void setup () {
  pinMode(SWITCH, INPUT);
  pinMode(POT, INPUT);
  pinMode(LED, OUTPUT);
}
 
void loop () {
  // If the button is pressed
  if ( digitalRead( BUTTON ) == LOW ) {
    
    // Read the current state of the potentiometer
    int potVal = analogRead( POT );
    
    // Map the potentiometer's range of values to that of the led
    int ledVal = map( potVal, 0, 1023, 0, 255 );
    
    analogWrite( LED, ledVal );
    
  }
}