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Home / Sensors / ACS712 Module 30A Range Current Detection Board ACS712-05B Hall Effect Current Sensor Electronic Building Block

Attributes

Brand -
Category Robotics / STEM Teaching Tools / Sensors
Origin -
Current Range ±30A
Sensitivity 66mV/A
Operating Voltage 5V DC
Output Type Analog Voltage
Bandwidth 80kHz
Response Time 5µs
Isolation Voltage 2.1kV RMS
Connector Type Screw Terminal
PCB Dimensions 31mm x 13mm
Compatibility Arduino, Raspberry Pi, ESP32

6 reviews

A

Anonymous

Mar 29, 2026

Rating: 5/5

Works great with solar setup

Using this to track current from my small solar panel array. The isolation feature gives me peace of mind. Very satisfied with the performance.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Reliable current monitoring

I am using this to monitor battery drain on a robot chassis. It handles the 30A surge currents without any issues. Highly recommended for robotics applications.

A

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for Arduino Projects

This sensor works flawlessly with my Arduino Uno. The readings are stable and the screw terminals make wiring very secure. Great value for the price.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Excellent build quality

The PCB looks professional and the Hall effect sensor is properly mounted. No noise issues when placed near motors. Fast shipping too.

A

Anonymous

Mar 16, 2026

Rating: 4/5

Great for learning

Bought this for a university project on power consumption. The documentation online is plentiful, making it easy to get started. Works exactly as described.

A

Anonymous

Mar 03, 2026

Rating: 4/5

Good accuracy, needs calibration

The module is well-built and compact. I noticed a slight offset in the zero-current reading, but it was easily corrected in the code. Overall a solid choice for DIY electronics.

5 FAQ

Q: Is this compatible with 3.3V microcontrollers like ESP32?

A: Yes, it is compatible. However, since the output swings around 2.5V, you may need a voltage divider or an op-amp circuit to safely interface with 3.3V ADC pins to avoid exceeding their maximum input voltage.

Q: What is the maximum continuous current this can handle safely?

A: While the range is ±30A, for continuous operation, we recommend staying below 20A to prevent excessive heating and ensure long-term reliability without additional cooling.

Q: Does the package include connecting wires?

A: No, the package includes only the ACS712 module board. Connecting wires and headers are not included but are standard components easily sourced separately.

Q: Can this module measure AC current as well as DC?

A: Yes, the ACS712-30A module can measure both AC and DC current within its ±30A range.

Q: What is the output voltage when no current is flowing?

A: When no current is flowing, the output voltage is typically half of the supply voltage, which is approximately 2.5V for a 5V system.

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