Tutorial for Mini Digital Voltmeter

Description

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but we thought it would be great on a breadboard or enclosure. This is the 2-wire version of the volt meter, two wires are used to power it and measure at the same time.

Specification

• Operating Voltage : 4.5-30V

• DCSize: 0.56 Inch

• Dimension: 48mm*29mm*18mm

To do this tutorial, you will need to prepare as following below :

• MS-4.5-3.0 Digital Voltmeter
• Multimeter / Voltmeter
• DC Jack (Female)
• Battery or Adapter (12V, 7.4V, 5V)

Connect the red wire of digital voltmeter to + of DC jack and black wire of digital voltmeter to - of DC jack. Then, connect to your battery / power adapter to measure voltage to see if this mini digital voltmeter can work just fine.

Now, take your multimeter. Turn it on and shift the pointer to DC Voltage. Place the red probe of your multimeter to DC jack's +ve and black probe of multimeter to DC jack's -ve.

As you can see on the picture above, this is the result when both mini digital voltmeter and digital multimeter measure the voltage of 5V power adapter.

As you can see on the picture above, this is the result when both mini digital voltmeter and digital multimeter measure the voltage of 7.4V Li-ion battery.

As you can see on the picture above, this is the result when both mini digital voltmeter and digital multimeter measure the voltage of 12V Li-ion battery.

NOTE : this battery is not fully charge, therefore, the reading is only 10.7V.