Units – Light Unit with Photo-resistance Grove Port



Description


LIGHT is a light intensity sensor unit with an adjustable photoresistor。

A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity, and vice versa. It exhibits photoconductivity which make it possiable to detect the varies based on Voltage, and use a AD to convert the digital data.

We add some extra work to strengthen the circult, a Dual Differential Comparators LM393, compares the differntial voltage between the photoresistor and the varistor. It could offer larger and accuracy range of light intensity.

 

Feature


  • 10K adjustable resistor
  • Software Development Platform: Arduino, UIFlow(Blocky,Python)
  • Two Lego-compatible holes

Source PinMap


 

M5Core(GROVE B) GPIO36 GPIO26 5V GND
LIGHT Unit AnalogSignal Pin DigitalSignal Pin 5V GND

Include


  • 1x LIGHT Unit
  • 1x Grove Cable