Reading Potentiometer Voltage Using an ESP32 Microcontroller

Reading Potentiometer Voltage Using an ESP32 Microcontroller

This video shows how to start reading potentiometer voltage at analog inputs of the ESP32. Pins and potentiometers are explained.

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Reading Potentiometer Voltage using ESP32 Microcontroller from Analog pins

如果代码不可见，请查看该页面的英文版。对此造成的不便我们深表歉意。

243-Arduino code

语言: C++

/*
  ESP32 Analog Read
  Read potentiometer voltage at different inputs

  Written by Ahmad Shamshiri at 20:55
  on Sunday, September 1, 2019 in Ajax, Ontario, Canada

  Watch video instructions for this sketch: 
https://youtu.be/UXKu2Xtwj7c
 
*/

const int potPin = 39;// Analog pin

int potValue;// do not change
float voltage =0;// do not change


void setup() {
  // initialize serial communication at 115200 bits per second:
  Serial.begin(115200);
}


void loop() {
  // read the input on analog pin potPin:
  potValue = analogRead(potPin);
  voltage = (3.3/4095.0) * potValue;
  Serial.print("potValue:");
  Serial.print(potValue);
   
  Serial.print(" Voltage:");
  Serial.print(voltage);
  Serial.println("V");  
  delay(50); // delay in between reads for stability
}