Ldr Arduino Schaltung. This project demonstarate how to use ldr in arduino. Now after testing the ldr we will code the arduino to change the state of led automatically by using the ldr.
The varying resistance of the ldr is converted to a varying voltage that the analog pin of the arduino will then be using in its logic. Light and dark detection using an ldr. Bei helligkeit beträgt der widerstand etwa 250ω bei dunkelheit etwa 10kω.
By following the below circuit diagram connect the ldr led with arduino.
For this project let s stick to the ldr sensor module so we can select the light or dark detection by placing jumpers. Connect the other leg of the resistor to pin number 11 digital pin of the arduino. One leg of the ldr is connected to vcc 5v on the arduino and the other to the analog pin 0 on the arduino. The photoresistor or ldr is a resistor that varies its value according to the light falling on it and therefore it can be used with arduino to create innovative and more complex projects.
