Arduino 模拟信号的读入并转化作0-5V电压

Arduino 模拟信号的读入并转化为0-5V电压

int ledIn = A0;void setup(){  Serial.begin(9600);}void loop(){  int sensorValue = analogRead(ledIn);  // 将模拟信号转化为0-5V的电压  float voltage = sensorValue * (5.0 / 1023.0);  // 打印电压  if(voltage>1) Serial.println(voltage);}