Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Interface Protocol	I2C
Measurement Type	Bidirectional Current and Power
Max Bus Voltage	26V DC
Max Shunt Voltage	320mV
Current Sense Resistor	0.1 Ohm, 1% Tolerance
Operating Voltage	3.3V or 5V
Accuracy Class	Zero-Drift Architecture
Addressable Options	4 Pin-selectable I2C Addresses
PCB Dimensions	20mm x 15mm
Connector Type	Standard 0.1 inch Pitch Header

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Best in class for this price

Compared to other modules I've tried, this one offers the best balance of precision and ease of use. The zero-drift feature really makes a difference in long-term monitoring.

Anonymous

Mar 28, 2026

Rating: 5/5

Perfect for Arduino Projects

This module works flawlessly with my Arduino Uno. The library support is excellent, and reading current and power values was straightforward. Highly recommended for DIY electronics.

Anonymous

Mar 23, 2026

Rating: 4/5

Great accuracy, small form factor

Very compact and accurate for low-voltage applications. I used it to monitor a solar panel setup. The only minor issue is that the soldering pads are a bit small for thick wires.

Anonymous

Mar 21, 2026

Rating: 5/5

Easy to set up

Plug and play with Raspberry Pi. The documentation online is plentiful, making it easy to get started even for beginners. Great value for the price.

Anonymous

Mar 13, 2026

Rating: 4/5

Solid performance

Does exactly what it says on the tin. The I2C communication is stable. Just ensure you calculate the shunt resistor value correctly for your specific current range needs.

Anonymous

Mar 04, 2026

Rating: 5/5

Reliable sensor for robotics

I integrated this into a battery management system for a robot. The bidirectional capability is essential for tracking charge and discharge cycles. No drift issues observed so far.

5 FAQ

Q: What is the maximum current this can handle?

A: With the default 0.1 Ohm shunt resistor, the maximum measurable current is approximately 3.2A. You can replace the shunt resistor to measure higher currents if needed.

Q: Does it come with header pins pre-soldered?

A: No, the module is shipped with unsoldered header pins to allow for flexible mounting options. You will need to solder them yourself or use jumper wires directly.

Q: Can this module measure negative current?

A: Yes, the INA219 chip supports bidirectional current monitoring, allowing it to measure both positive and negative current flow effectively.

Q: How do I change the I2C address?

A: There are solder jumpers on the back of the PCB labeled A0 and A1. By bridging these to VCC or GND in different combinations, you can select one of four unique addresses.

Q: Is this compatible with 3.3V logic levels?

A: Absolutely. The module operates on both 3.3V and 5V logic levels, making it compatible with most microcontrollers like ESP32, Arduino, and Raspberry Pi.

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