ACS712 Current Sensor Module 20A Ammeter for Arduino

Description

What it is

The ACS712 is a current sensor module for Arduino that allows the measurement of electrical current in circuits up to 20A. The module is designed to be easily integrated into Arduino projects, providing accurate data on the amount of current present in the circuit.

Features

• Measures current up to 20A
• Ideally suited for use with Arduino

What it is for

The ACS712 can be used in various projects, including the creation of an overcurrent alarm system. The module is compatible with Arduino and can be easily integrated into electronic circuits to monitor and manage current.

Tutorial: How to use ACS712 Current Module Arduino

The ACS712 module measures electrical current in circuits up to 20A. Ideal for Arduino projects.

What you need

• Arduino Uno
• USB B Cable
• Connection to the circuit to be monitored

Steps

1. Connect the ACS712 module to the Arduino using jumper wires.
2. Check the module’s power supply voltage (5V or 3.3V) and connect it correctly to the Arduino.
3. Connect the module’s analog output to an analog pin on the Arduino.
4. Download the example code to read data from the sensor.
5. Compile and upload the sketch to the Arduino.
6. Open the Serial Monitor section in the Arduino IDE.
7. Read the current values displayed in the serial monitor.
8. Record the measurements for subsequent analysis.

Example code

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

void loop() {
  int valore = analogRead(A0);
  float tensione = (valore * 5.0) / 1024.0;
  float corrente = (tensione - verifica sul datasheet) / (verifica sul datasheet);
  Serial.print(corrente);
  Serial.println(" A");
}

Mini project

Create an overcurrent alarm system using the ACS712 module.

Common mistakes

• Incorrect power supply to the ACS712 module (5V or 3.3V).
• Analog pin not connected correctly.
• Error in converting voltage to current.

Recommended accessories

• LCD Module to display real-time current data.
• Relay Module to automatically control the activation/deactivation of electrical devices.
• LiPo Battery with USB charger
• Temperature Sensors

Frequently asked questions

How do I calculate the current?
Use the formula: Current = (Voltage – check the datasheet) / (check the datasheet)

What are the measurement limits of the ACS712 module?
The module can measure currents up to 20A.