Assignment: Sensing: Potentiometers

Collaborators:

Description:

Combine the use of three potentiometers and analog input to with the arduino board to create a color fading and mixing device.

Materials:

Sample Code:

 
 
/*
 * AnalogInput
 * by DojoDave <http://www.0j0.org>
 *
 * Turns on and off a light emitting diode(LED) connected to digital  
 * pin 13. The amount of time the LED will be on and off depends on 
 * the value obtained by analogRead(). In the easiest case we connect
 * a potentiometer to analog pin 2.
 *
 * http://www.arduino.cc/en/Tutorial/AnalogInput 
 */
 //Input 3 pots, connected to 3 colors, dim the colors according to change in pot input
 
int potPin = 1; 
int potPin2 = 2;        // select the input pin for the potentiometer 1 and 2 and 3
int potPin3 = 3;
int ledPin = 11;        // red select the pin for the LED
int ledPin2 = 10;       //green
int ledPin3 = 9;        //blue
 
int val = 0;            //variables to store the incoming values from pots 1-3
int val2 = 0;
int val3 = 0;
 
void setup() {
pinMode(ledPin, OUTPUT);  // declare the ledPin as an OUTPUT
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);  
Serial.begin(9600);
}
 
void loop() {
 // potPin controls red
val = analogRead(potPin);         //read from sensor
Serial.println("red " + val);      //display value
analogWrite(ledPin, val/4);        //change brightness
 
//potPin2 controls green
val2 = analogRead(potPin2);
Serial.println("green " + val2);
analogWrite(ledPin2, val2/4);
 
//potPin3 controls blue
val3 = analogRead(potPin3);
Serial.println("blue " + val3);
analogWrite(ledPin3, val3/4);
 
 
}