用Tinkercad学arduino之 将电位器模拟读数转为电压值

/*
  ReadAnalogVoltage
  读取模拟电压

  Reads an analog input on pin 0, converts it to voltage, and prints the result to the serial monitor.

  OPEN THE SERIAL MONITOR TO VIEW THE OUTPUT >> 
  Attach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground.

   读取引脚0上的模拟输入，将其转换为电压，然后将结果打印到串行监视器。

   打开串行监视器以查看输出>>
   将电位计的中心引脚连接到引脚A0，外部引脚连接到+ 5V并接地。
   
  This example code is in the public domain.
*/


// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  int sensorValue = analogRead(A0);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
  float voltage = sensorValue * (5.0 / 1023.0);
  // print out the value you read:
  Serial.println(voltage);
}