Arduino: Project 21: Checking voltage readings on your Phone!

Hello everyone!! Welcome to this post on Arduino Projects!!
Need a short introduction to what the Arduino is then click on LINK
Check out the breadboard intro right HERE

So in this project I’ve done some more fun experimenting with MIT App Inventor and Bluetooth Module! In this project you can read the voltage across the potentiometer on your phone!


So this is how my project looks like:

Things Required:

  1. Arduino UNO
  2. Jumper Wires
  3. HC-05 Bluetooth Module
  4. 10k ohm resistor
  5. Arduino IDE on computer
  6. MIT App Inventor (It’s superr cool!)

Reference Material:

I followed this (LINK) video for this project.


View on/ Download from Github: (LINK)

int potpin= A0;
float potval;

void setup() {
  // put your setup code here, to run once:
  pinMode(potpin, INPUT);


void loop() {
  // put your main code here, to run repeatedly:
  potval= analogRead(potpin);
  potval= potval/205;


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Happy Learning!!

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