光敏传感器实质是一个光敏电阻,其阻止会随光线强度的变化而发生变化,并且当光照强烈时,阻值变小;光照减弱时,阻值增大;完全遮挡光线时,阻值最大。
Arduino引脚 |
模块引脚 |
A2 |
S |
5V |
Vcc |
GND |
GND |
int sensorPin = 2; int value = 0; void setup() { // put your setup code here, to run once: Serial.begin(9600); } void loop() { // put your main code here, to run repeatedly: value = analogRead(sensorPin); Serial.println(value, DEC); delay(50); }