Attiny85 LDR and LED – arduino version

In this example we will connect an LDR to an Attiny85, once the value read drops below a certain value we will switch an LED on.

For this example we used the Arduino IDE to write our code. We’ll post a different version using Atmel Studio or equivalent soon.

Schematic

Code

[c]

int analogPin = 3; //pin 2

int LEDPin = 1; //pin 6

int val = 0;
void setup()

{

  pinMode(LEDPin, OUTPUT);

  digitalWrite(LEDPin,LOW);

  delay(2000);

  digitalWrite(LEDPin,HIGH);

}
void loop()

{

  val = analogRead(analogPin);    // read the input pin

  if(val < 200)

  {

    digitalWrite(LEDPin,HIGH);

    delay(200);

  }

  else

  {

    digitalWrite(LEDPin,LOW);

  }

}

[/c]
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