Arduino: Arduino Lab 6

Purpose:

To make an LED change its brightness level according to how much light is hitting the light sensor

Equipment:
Light sensor

Led (any colour)

3 wires (any colour)

330 Ohm resistor

10k Ohm resistor

Program Details:
Arduino

Time to Program and Complete:
15 mins

Results:
We had no problems

Photo/Video Proof:
None right now

Program:

int lightPin = 0; -Creates a variable for lightPin to pin 0

int ledPin = 9; -Creates a variable for ledPin to pin 9

void setup() -Starting of the void setup()

{ -Start of void setup()

pinMode(ledPin, OUTPUT);- Tells if the ledPin is an Output or Input

} - End of void setup()

void loop() -Start of void loop()

{ -Start of void loop()

int lightLevel = analogRead(lightPin); -Creates a variable for lightLevel which stores value from the light sensor

lightLevel = map(lightLevel, 0, 900, 0, 255); -Converts lightLevel from 0-900 to 0-255

l = constrain(lightLevel, 0, 255); -Makes sures light level is from 0-255

analogWrite(ledPin, lightLevel); -ledPin is = to lightLevel

} -End of program

Program Modifications:
none

Helpful Tips:
Not really anything

References:
Aron Graca

Arduino