€0,25
A photosensitive resistor LDR.
252 in stock
A Light Dependent Resistor (LDR) is an electrical component whose resistance is influenced by the amount of light falling on it. With an LDR you can easily measure the light intensity.
LDR 5528 Light Dependent Resistor 5MM specifications:
– Light resistance: 10K – 20k ohm.
– Max voltage: 150V.
– Max consumption: 100mW.
int LDR_Pin = A0; //analog pin 0
void setup(){
Serial.begin(9600);
}
void loop(){
int LDRReading = analogRead(LDR_Pin);
Serial.println(LDRReading);
delay(250); //just here to slow down the output for easier reading
}Only logged in customers who have purchased this product may leave a review.
Electronics4Fun (verified owner) -
Affordable ldr with a large range: I could measure 330 Ohm with the sensor against the lamp and in complete darkness several tens of Mega Ohm. The sensor makes a clear separation with every change in light intensity. As an example: measures a clear difference between daylight that falls in the room and switching on a table lamp in the middle of the night, but also when the sensor is on the table and I walk three meters further in front of the window! Even if you move your hand in front of the sensor, a clear difference is measured. Available for a large number of purposes.