Light sensor
The iTriangle - Light sensor integrates a photo-resistor (light dependent resistor) to detect the intensity of light. The resistance of the photo-resistor decreases as the intensity of light increases. A dual OpAmp chip LM358 on board produces voltage corresponding to the intensity of light (i.e., based on resistance value). The output signal is an analogue value. The brighter the light, the larger the value.
This module can be used to build, for example, a light controlled switch that turns off lights during the day and turns them on at night.
The light sensor value only approximates the intensity of light, it DOES NOT represent the exact Lumen value.
Features
Analogue value output
High reliability and sensitivity
Small footprint
Detects a broad spectrum of light
Specifications
Item
Value
Operating voltage
3~5 V
Operating current
0.5~3 mA
Response time
20–30 milliseconds
Peak Wavelength
540 nm
Weight
4 g
WIKI iTriangle
