The grayscale sensor is an analog sensor. It can be used in combination with the Arduino sensor expansion board v5.0 to sense the different colors of the ground or the desktop and generate corresponding signals. It can realize interactive works related to color, and can also be used as a tour of the patrol car. Grayscale recognition of the field sensor or soccer robot. The power supply needs to be the same as the controller, usually 3.3V or 5V.
Working voltage: 3.3V or 5V
Working current : < 20mA
Operating temperature range: -10 ° C ~ +70 ° C
Detection resolution: 10%
Interface type: analog signal output
Size: 24mm x 21mm
+：Power supply (VCC)
The gradation sensor comprises a white high-brightness light-emitting diode and a photoresistor. Since the light returned by the light-emitting diode on different gradation papers is different, the photoresistor receives the returned light, and the photoresistor is different according to the intensity of the light. The resistance values are also different, thereby realizing the test of the gray value.
The gray level sensor has three pins, which are the power supply positive Vcc, the power supply ground GND, and the signal end S. In actual use, the sensor can be directly connected to the analog interface of the Arduino controller, for example, the analog port A0, after the Arduino is powered on, The sensor white highlight LED lights up, the sensor button is placed on different gray paper, the data is read by the AD conversion of the Arduino controller, and then the measured analog quantity is printed through the serial port.
The S port is connected to the analog input pin of the controller. Connect 5V and GND to the +5V and GND of the power supply, respectively.