Twinspace

LDR

What is LDR?
It stands for Light Dependent Resistor or Photoresistor, which is a passive electronic component, basically a resistor which has a resistance that varies depending of the light intensity.
How is it Works?
The resistance is very high in darkness, almost high as 1MΩ but when there is light that falls on the LDR, the resistance is falling down to a few KΩ (10-20kΩ @ 10 lux, 2-4kOmega; @ 100 lux) depending on the model.
LDR
- Arduino Uno & USB Cable
- Breadboard
- 1 LED or more
- 1 220 ohm resistors
- 1 10K ohm resistors
- Jumper wires
The Circuit:
$C:\Users\user\Desktop\arduino lessons\LDR\Magnificent Leelo.png$

Code with Mblock
$C:\Users\user\Desktop\arduino lessons\LDR\LDR Kodlar.JPG$
The videos: