Make a simple and cheap USB Voltmeter at home

Voltmeter is a such kind of meter which can measure the voltage of a power source. It is a very important device for electrician. USB voltmeter is made to measure the voltage in a usb port. There are different type of usb voltmeter found in online shop. But most of them is very costly. So, today we will learn how to make a cheap usb voltmeter at home.
To make a usb voltmeter at home we will need the following items:

• Male USB Port
• 3 Digit Volt meter
• Solder Iron
• Hot glue gun

Process:

1. Find out Positive (+) and Negative (-) Terminal of the male usb port.
2. Now connect the Power Positive Terminal and the Postive probe terminal of the volt meter with postive terminal of the male usb port.
3. Connect the Negative of Ground terminal of the meter with the negative terminl of the male usb port.
4. Now solder the terminal.
5. Now use glue to set it in right position.
   
6. Ok. Our Usb male port is now ready.