Description
Reviews
| 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 |
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.
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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