Tangible User Interfaces - Fall 2011

Description

I created a system with 3 potentiometers and 3 LEDs in which each potentiometer controls one LED.

Materials used

Red LED

Blue LED

Green LED

3 potentiometers

Code

/*
 * 3 potentiometers control 3 LEDs
 * modified version of AnalogInput
 * by Chelsey Tanaka
 */
int pot1 = 1;   // select the input pin for potentiometer 1
int pot2 = 2;   // select input pin for potentiometer 2
int pot3 = 3;   // select input pin for potentiometer 3

int led1 = 9;   // select the pin for LED 1
int led2 = 10;  // select the pin for LED 2
int led3 = 11;  // select the pin for LED 3

int potVal1 = 0; // variable to store the value coming from potentiometer 1
int potVal2 = 0; // variable to store value from potentiometer 2
int potVal3 = 0; // variable to store value from potentiometer 3
void setup() {
  Serial.begin(9600);
}
void loop() {
  potVal1 = analogRead(pot1);    // read value from pot1, between 0 - 1024
  Serial.println(potVal1);
  analogWrite(led1, potVal1/4); // analogWrite can be between 0-255
  potVal2 = analogRead(pot2);    // read value from pot1, between 0 - 1024
  Serial.println(potVal2);
  analogWrite(led2, potVal2/4); // analogWrite can be between 0-255
  potVal3 = analogRead(pot3);    // read value from pot1, between 0 - 1024
  Serial.println(potVal3);
  analogWrite(led3, potVal3/4); // analogWrite can be between 0-255
}