U021

LIGHT SKU:U021 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. Product Features 10K adjustable resistor Software Development Platform: Arduino, UIFlow(Blocky,Python) Two Lego-compatible holes Product Size：32.2mm x 24.2mm x 8.5mm Product weight：8.8g Include 1x LIGHT Unit 1x Grove Cable EasyLoader EasyLoader is a concise and fast program writer, which has a built-in case program related to the product. It can be burned to the main control by simple steps to perform a series of function verification. Please install the corresponding driver according to the device type. M5Core host Please click here to view the CP210X driver installation tutorial, M5StickC/V/T/ATOM series can be used without driver) Windows MacOS Example 1. Arduino IDE The code below is incomplete. To complete code, please click here 2. UIFlow To get complete code, please click here Schematic PinMap M5Core(GROVE B) GPIO36 LIGHT Unit GPIO26 AnalogSignal Pin DigitalSignal Pin 5V GND 5V GND https://docs.m5stack.com/#/en/unit/light/4-10-20