Little Bird
LDR Photoresistor
This Light Dependant Resistor (LDR) can be used to easily measure ambient light with your Arduino or other board with analog input. You will need to set t...
This Light Dependant Resistor (LDR) can be used to easily measure ambient light with your Arduino or other board with analog input. You will need to set this up as a voltage divider with a resistor of around 10KΩ.
Specification:
Maximum voltage: 150V, DC
Maximum wattage: 90mW
Operating temperature: -30°C ~ 70°C
Spectral peak: 540nm
Bright resistance (10Lux) (KΩ): 5 - 10
Dark resistance: 0.5 MΩ
100λ10: 0.5
Response time: 20ms (Rise), 30ms (Down)
Resistance illumination: 2
Jargon buster
Plain-language definitions for the technical terms used above.
- LDR
- A light-dependent resistor is a component whose resistance changes with light level. It is useful for simple brightness sensing, and an ADC board is needed to turn its changing analogue voltage into numbers a microcontroller or computer can read.
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