About: I'm from India and love making projects on electronics, specially with arduino. Internet is the only guidance I have and I've been into these since I was 11.

Anyone who has ever tinkered with the electronics and things knows the importance of the Voltmeter, and sometimes it is even convenient to add the Voltage measuring capability inside of your project. But sometimes we have our project deeply embedded into something and we just cannot probe in our Multimeter or Voltmeter, to get around this it is nice to put something by which means we would know the voltage.

In this tutorial, I will show you how you can measure up to 25V with Arduino via Bluetooth module through your phone.

Following is the video tutorial for this--