Chris and Skyler here, and boy do we have a goodie for y'all! We've been spending some time playing around with LEDs and we wanted to up the game by adding a photosensor input. Through exposing our sensor to a flashlight our LED would turn off (how energy efficient! ) and if we moved the light away, the LED would light up again. The video below demos the action and you can see our code below,
int lightPin = 0; //define a pin for Photo resistor
int ledPin=12; //define a pin for LED
void setup()
{
Serial.begin(9600); //Begin serial communcation
pinMode( ledPin, OUTPUT );
}
void loop()
{
Serial.println(analogRead(
lightPin)); //Write the value of the photoresistor to the serial monitor.
analogWrite(ledPin, analogRead(lightPin)/4); //send the value to the ledPin. Depending on value of resistor
//you have to divide the value. for example,
//with a 10k resistor divide the value by 2, for 100k resistor divide by 4.
delay(10); //short delay for faster response to light.
}
No comments:
Post a Comment