Features 1、ANALOG SENSOR: The grayscale sensor is an analog sensor, used in conjunction with the sensor expansion board v5.0, can perceive different colors and generate corresponding signals. 2、GRAY VALUE TEST: Including a white high brightness LED and a photoresistor, according to the strength of the light, to achieve the gray value test. 3、3 PIN DESIGN: With 3 pins, which are power positive VCC, power ground GND, signal terminal OUT, which can be directly connected to the analog interface of the controller. 4、MULTIPLE USAGES: Can realize interactive works related to color, and can also be used as a line following sensor or a football robot field gray recognition. 5、EXAMPLE PROGRAM: Connect the grayscale sensor to the controller according to the program, and observe the value output by the serial port under different grayscale values. Specification Item Type: Grayscale Sensor Working Voltage: 3.3V or 5V Working Current: <20mA Operating Temperature Range: -10℃-70℃ Detection Resolution: 10% Interface Type: Analog signal output Board Size: Approx. 24 x 21mm / 0.9 x 0.8in Interface Definition: OUT: Signal Output VCC: Power (VCC) GND: Ground (GND) Package List 1 x Grayscale Sensor