Digital USB Voltmeter Ammeter with OLED Display

Description

What it is

The USB Digital Voltmeter and Ammeter with OLED display is a measurement tool for electronics that allows monitoring voltage and current in circuits and projects. It is ideal for testing and diagnosing electronic components.

Features

• USB Digital Voltmeter and Ammeter with OLED display
• Low voltage voltage and current meter

What it is for

This volt-ammeter can be used to measure voltage and current in various electronic projects, such as monitoring the voltage of a 3.7V battery during charging.

Tutorial: How to use USB Digital Voltmeter and Ammeter

This tool measures voltage and current in low voltage circuits, ideal for testing and diagnosing electronic circuits.

What you need

• USB Digital Voltmeter and Ammeter
• Arduino or compatible microcontroller
• USB cable
• Test leads

Steps

1. 1. Check the datasheet for maximum voltage specifications.
2. 2. Connect the USB cable to the computer.
3. 3. Connect the microcontroller to the voltmeter.
4. 4. Start the Arduino software.
5. 5. Load the minimal code for the interface.
6. 6. Check electrical connections.
7. 7. Measure voltage and current.
8. 8. Analyze the displayed data.

Example code

void loop() {}

Mini project

Measure the voltage of a 3.7V battery and adjust the battery charger.

Common mistakes

• Connect the voltmeter to voltages higher than the maximum supported.
• Forget to start the Arduino software.
• Do not check electrical connections before taking measurements.

Recommended accessories

• 3.7V battery
• Battery charger
• Protection resistor
• Multimeter

Frequently asked questions

How can I connect the voltmeter to a circuit?
Connect the positive end to the measurement point and the negative end to ground.

What are the maximum voltages supported?
Check the datasheet for precise specifications.

Can I use this voltmeter with a different microcontroller?
Make sure the USB protocol is compatible with your microcontroller.