ACS712 30A Current Sensor Module is a high-performance Hall Effect current sensing module designed for measuring both AC and DC currents up to ±30A. Based on the ACS712 Hall-effect sensor IC, this module provides an analog voltage output proportional to the detected current, making it ideal for Arduino, ESP32, ESP8266, Raspberry Pi, STM32, AVR, PIC, and other microcontroller-based projects.

With a sensitivity of 66mV/A, the module can accurately monitor high-current loads while maintaining electrical isolation between the sensing circuit and the measured current path. It detects current flow in both forward and reverse directions and outputs approximately 2.5V when no current is flowing, enabling easy bidirectional current measurement.

Features:

• Measures both AC and DC current

• Based on ACS712 Hall Effect sensor technology

• Supports current measurement up to ±30A

• Bi-directional current sensing capability

• Analog voltage output proportional to current

• 66mV/A sensitivity

• Electrical isolation between signal and load circuits

• Low-noise analog signal path

• Stable output offset voltage

• Fast response and high bandwidth

• Low internal conductor resistance

• Adjustable bandwidth through filter pin

• Compact PCB module design

• Easy integration with microcontrollers

• Suitable for power monitoring and protection systems

Applications:

• Arduino current measurement projects

• ESP32 and ESP8266 power monitoring

• Battery charging systems

• Battery management systems (BMS)

• Digital watt meters

• Power consumption monitoring

• Solar energy monitoring systems

• Motor current measurement

• Overcurrent protection circuits

• Switching power supplies

• Industrial automation systems

• Robotics and embedded systems

• Smart energy monitoring devices

• DC load testing systems

• Electronic laboratory projects

Benefits:

• Accurate high-current measurement

• Safe Hall Effect isolation technology

• Measures current in both directions

• Low power loss due to low conductor resistance

• Suitable for real-time current monitoring

• Easy analog interfacing with ADC inputs

• Reliable and stable performance

• Compact and lightweight design

How to Use:

• Connect VCC to a regulated 5V power source.

• Connect GND to system ground.

• Route the load current through the sensor terminals.

• Connect the OUT pin to a microcontroller analog input.

• Read the output voltage using the ADC.

• Calculate current using the 66mV/A sensitivity value.

• At 0A current, the output voltage is approximately 2.5V.

Product Instructions:

• Operate only within the recommended voltage range.

• Do not exceed the maximum measurable current rating.

• Ensure secure wiring before powering the circuit.

• Keep the module away from moisture and conductive contaminants.

• Use proper calibration for precise measurements.

• Add filtering if required in electrically noisy environments.

Specifications:

• Module Type: Current Sensor Module

• Sensor IC: ACS712

• Current Measurement Range: ±30A

• Current Type: AC and DC

• Operating Voltage: 5V DC

• Output Type: Analog Voltage

• Output Sensitivity: 66mV/A

• Zero Current Output Voltage: 2.5V

• Bandwidth: 80kHz

• Internal Conductor Resistance: 1.2mΩ

• Total Output Error: 1.5% Typical at 25°C

• Signal Path: Low Noise Analog

• Filter Pin: Yes (Bandwidth Adjustable)

• Magnetic Hysteresis: Near Zero

• Sensing Technology: Hall Effect

• Isolation Type: Electrical Isolation Between Signal and Current Path

Package Includes:

• 1 x ACS712 30A Current Sensor Module

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