MAKERFACTORY MAKERFACTORYM5 stack light intensity sensor

The light intensity sensor unit from the M5 Stack Series is equipped with an adjustable photo resistance. A photo resistor is a light-controlled variable resistor. The resistance of a photo resistance decreases with increasing intensity of the incident light and vice versa. It has a photo conductivity, which enables the fluctuations on the basis of the voltage to capture and convert the digital data with an AD. The developers have also a little more effort in order to strengthen the circuit. A LM 393 Dual Differential comparator compares the voltage differential between the photo resistor and the varistor. Thus it can offer a larger and more exact area of the light intensity. This text is machine translated.