Pots, pots, pots

Components
• 1 Arduino Uno
• 3 resistor (220 ohms)
• 3 pots
• 3 LEDs (red, blue, green)
• 1 breadboard
• 1 USB cable
• Jumper wires
• Laptop

Description
For this lab I used my Arduino Uno board to control the brightness of the three LEDs, by manipulating 3 pots.

Code

int sensorRed = A0;    // select the input pin for the potentiometer 1

int sensorBlue = A1;    // select the input pin for the potentiometer 2

int sensorGreen = A2;    // select the input pin for the potentiometer 3

int redPin = 9;        // select the pin for the red LED

int bluePin = 10;      // select the pin for the blue LED

int greenPin = 11;     // select the pin for the green LED

int redValue=0;

int blueValue=0;

int greenValue=0;

void setup() {

// declare the ledPin as an OUTPUT:

pinMode(redPin, OUTPUT);

pinMode(bluePin, OUTPUT);

pinMode(greenPin, OUTPUT);

}

void loop() {

// read the values from the sensors:

redValue = analogRead(sensorRed);

blueValue = analogRead(sensorBlue);

greenValue = analogRead(sensorGreen);

redValue=(redValue/4);

blueValue=(blueValue/4);

greenValue=(greenValue/4);

analogWrite(redPin, redValue);

analogWrite(bluePin, blueValue);

analogWrite(greenPin, greenValue);

}

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