Color Recognition GY-31

The GY-31 programmable color light -to-frequency converters that combine configurable silicon photo diodes and current to frequency converter on a signal monolithic CMOS integrated circuit. the output is a square wave (50% duty cycle) with frequency directly proportional to light intensity (irradiance). the full-scale output frequency can be scaled by one of three presets values via two control input pins. Digital inputs and digital output allow direct interface to a micro-controller or other logic circuitry. Output enable (OE) places the output in the high impedance state for multiple-unit sharing of a micro-controller input line.