Digital Alarm DC Voltmeter High and Low Voltage Upper and Lower Warning Line 2 Range 4.5-40V XH-B115

Description

What it is

The digital alarm voltmeter XH-B115 is a device that signals high or low voltages between 4.5 and 40V, activating an alarm. It is designed for monitoring voltages in electronic circuits.

Features

• Measurement range: 4.5-40V
• Voltage type: DC
• High and low voltage alarm
• 2 measurement ranges
• SKU: ARD0011331
• Price: 4.48 €

What it is for

The XH-B115 voltmeter is useful for protecting electronic circuits from voltages that are too high or too low. It can be integrated into monitoring and alarm projects. It is ideal for beginner and intermediate makers.

Tutorial: How to use the Digital Alarm Voltmeter XH-B115

The digital alarm voltmeter XH-B115 is a useful device for monitoring electrical voltage in electronic circuits. It is ideal for beginner and intermediate makers who want to protect their devices from excessive or insufficient voltages.

What you need

• Voltmeter XH-B115
• Arduino Uno
• Connection cable
• Power Supply

Steps

1. Connect the XH-B115 voltmeter to the Arduino using the connection cables.
2. Check that the voltmeter is correctly powered by the power supply.
3. Configure the Arduino to read data from the voltmeter.
4. Set the alarm limits for high and low voltage in the Arduino code.
5. Test the system by varying the applied voltage.
6. Verify that the alarm works correctly within the set limits.

Example code

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

void loop() {
  int reading = analogRead(A0);
  float voltage = reading * (5.0 / 1023.0);
  Serial.println(voltage);
  if (voltage > 35.0) {
    Serial.println('Alarma Alta Tensione!');
  }
  if (voltage < 5.0) {
    Serial.println('Alarma Bassa Tensione!');
  }
}

Mini project

Create an alarm system to protect a sensitive circuit from excessive or insufficient voltages. Use the XH-B115 voltmeter to monitor the voltage and the Arduino to activate an alarm signal when voltage limits are exceeded.

Common mistakes

• Do not properly check the voltmeter power supply voltage.
• Set the alarm limits too narrowly or too widely.
• Do not correctly connect the voltmeter to the Arduino.
• Do not test the system before using it in a real circuit.

Recommended accessories

• Connection cable
• Power supply
• Relay
• LED

Frequently asked questions

What is the minimum supply voltage for the XH-B115 voltmeter?
Check the product datasheet.

How can I configure the voltmeter for a different voltage range?
Modify the Arduino code to adapt the alarm limits to your requirements.

Can the voltmeter be used with platforms other than Arduino?
Yes, the voltmeter can be used with any platform that supports analog data reading.