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Reading Potentiometer Voltage using ESP32 Microcontroller

Reading Potentiometer Voltage using ESP32 Microcontroller from Analog pins

This this video how to start read potentiometer voltage at Alanog inputs of ESP32. Pins explained, potentiometer explained

00:45 Introduction
01:40 Pins expanded
03:46 Potentiometer Explained
05:50 Wiring Explained
07:39 Code Explained
10:55 Demonstration of reading voltage

Arduino Code


 /*
  ESP32 Analog Read
  Read potentiometer voltage at different inputs

  Written by Ahmad Shamshiri at 20:55
  on Sunday Sep 01, 2019 in Ajax, Ontario, Canada

  Watch Video instruction 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
}

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