Digital Panel Meter Voltmeter DC 5V – 120V Two-Wire

Description

What it is

The DC 5V – 120V Digital Panel Meter Voltmeter is a tool for measuring electrical voltage in a circuit. It is designed to be installed on a panel due to its shape and can clearly and legibly display the voltage.

Features

• Measurement Range: 5V – 120V DC
• Power Supply: check the datasheet
• Connection Type: 2 wire
• Display: digital

What it is for

This voltmeter is ideal for monitoring voltage in electronic power supplies, such as batteries or solar panels. It can also be used to balance the charge of batteries in a storage system. Its panel shape makes it suitable for integration into consumer electronics projects or monitoring systems.

Tutorial: How to Use 2 Wire DC5V-120V Digital Voltmeter

The two-wire digital voltmeter is a simple tool for measuring electrical voltage from 5V to 120V. It is ideal for makers who want to monitor battery charge levels or check the output of solar panels.

What you need

• Digital Voltmeter ARD0010017
• Arduino Uno
• Jumper wire

Steps

1. Connect the two wires of the voltmeter to the 5V and GND bus of the Arduino.
2. Open the Arduino IDE software and load an example sketch that reads the voltage from the voltmeter.
3. Check the voltmeter display to see if you get readings that are consistent with the applied voltages.
4. If necessary, calibrate the voltmeter following the instructions provided by the manufacturer.
5. Use the collected data to monitor battery charge or solar panel output.

Example code

void setup() {
  Serial.begin(9600);
}

void loop() {
  int val = analogRead(A0);
  float voltage = (val / 1024.0) * 5.0;
  Serial.print(voltage);
  Serial.println(" V");
}

Mini project

Create a real-time battery monitoring system using the voltmeter and send the data to an online platform like ThingSpeak.

Common mistakes

• Incorrect wiring of the voltmeter wires.
• Inconsistent readings due to lack of calibration.
• Use of voltages outside the 5V-120V range.
• Ignore the calibration instructions provided by the manufacturer.

Recommended accessories

• Arduino Uno
• LiPo Battery
• Relay Module
• RTC Module

Frequently asked questions

How do you calibrate the voltmeter?
Follow the manufacturer’s guide carefully for calibration.

Can it measure voltages below 5V?
Check the datasheet to see if it’s possible to use a voltage divider resistor network to reduce the voltage to the operational range.

Is it compatible with other platforms besides Arduino?
Yes, it can be used with any microcontroller that supports analog signal acquisition.