Description

A wheel painted with a spiral pattern to use for hypnotizing. LEDs fire randomly behind it for added madness.

Components

DC motor
Transistor
Diode
Resistors
Wheel
4x white LEDs

Arduino Code

/*
 * one pot fades one motor
 * modified version of AnalogInput
 * by DojoDave <http://www.0j0.org>
 * http://www.arduino.cc/en/Tutorial/AnalogInput 
 * Modified again by dave
 * Modified again by Laura
 */

int potPin = 0;   // select the input pin for the potentiometer
int motorPin = 9; // select the pin for the Motor
int val = 0;      // variable to store the value coming from the sensor

int led1 = 1;
int led2 = 2;
int led3 = 3;
int led4 = 4;

void setup() {
  Serial.begin(9600);
}
void loop() {
  val = analogRead(potPin);    // read the value from the sensor, between 0 - 1024
  Serial.println(val);
  analogWrite(motorPin, val/4); // analogWrite can be between 0-255  
  digitalWrite(led1, HIGH);
  delay(random(10,100));
  digitalWrite(led1, LOW);
  digitalWrite(led2, HIGH);
  delay(random(10,100));
  digitalWrite(led2, LOW);
  digitalWrite(led3, HIGH);
  delay(random(10,100));
  digitalWrite(led3, LOW);
  digitalWrite(led4, HIGH);
  delay(random(10,100));
  digitalWrite(led4, LOW);

}