Ldr Arduino Circuit Diagram. Ldr light dependent resistor as the name says its a resistor that is totally depending on the light. Circuit diagram of ldr and led.
A lot of interesting projects have been made on ldr light dependent resistor using with arduino. The analog value changes according to the resistance of ldr. Circuit diagram of ldr and led.
The ldr circuit diagram works like this.
Ldr and 10 k resistor voltage divider circuit middle point is connected to analog channel 0 of arduino uno. You have to use a voltage divider configuration to do this. As per the circuit diagram we have made a voltage divider circuit using ldr and 100k resistor. For example your arduino can adjust the intensity of an led in response to the ambient light detected by a ldr.
