Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Chip Model | INA226 |
| Interface Type | I2C (Two-Wire) |
| Supply Voltage | 3.3V - 5.0V |
| Max Bus Voltage | 36V |
| Current Sense Range | ±80A (with external shunt) |
| Shunt Resistor | 0.01 Ohm, 1% Tolerance |
| Resolution | 16-bit ADC |
| Compatibility | Arduino, STM32, ESP32, Raspberry Pi |
| Operating Temperature | -40°C to +85°C |
| PCB Dimensions | 24mm x 19mm |
Anonymous
Mar 27, 2026
Rating: 5/5
Great for solar charge controller logging
Using this to log data from a small solar panel setup. The ability to measure up to 36V bus voltage is exactly what I needed. Data logging has been running for weeks without issues.
Anonymous
Mar 26, 2026
Rating: 4/5
Solid performance
The sensor is accurate and the breakout board layout is logical. Make sure you use pull-up resistors on your I2C lines if your microcontroller doesn't have them built-in.
Anonymous
Mar 26, 2026
Rating: 4/5
Good precision, easy to use
Setup was straightforward using the Adafruit library. The precision is impressive for such a small board. Only giving 4 stars because the soldering pads are a bit tiny for beginners.
Anonymous
Mar 25, 2026
Rating: 5/5
Exceeded expectations
Very happy with this purchase. The build quality is excellent, and the documentation online is plentiful. It integrates perfectly into my home energy monitor project.
Anonymous
Mar 18, 2026
Rating: 5/5
Reliable sensor for robotics
I am using this to monitor current draw on a robotic arm. It handles the spikes well and provides accurate power calculations. Highly recommended for STM32 users.
Anonymous
Mar 09, 2026
Rating: 5/5
Perfect for battery monitoring projects
This module works flawlessly with my ESP32. The I2C communication is stable, and the readings are very consistent compared to my multimeter. Great value for the price.
Q: Is there a library available for ESP32?
A: Yes, you can use the popular Adafruit INA219/INA226 libraries available in the Arduino IDE Library Manager, which are fully compatible with ESP32.
Q: What is the maximum current this can measure safely?
A: The INA226 chip itself can measure high currents, but the limit depends on the shunt resistor. With the included 0.01 Ohm resistor, it is typically rated for up to 80A, provided adequate cooling and wiring are used.
Q: Can I use this with a 5V Arduino Uno directly?
A: Absolutely. The module supports 3.3V to 5V logic levels, so it connects directly to the 5V Arduino Uno without needing a level shifter.
Q: Does this module come with the shunt resistor pre-soldered?
A: Yes, the board includes a 0.01 Ohm, 2512 package shunt resistor already soldered on board, ready for immediate use.
Q: Does it support alert functions for over-current?
A: Yes, the INA226 features a programmable alert pin that can be configured to trigger on over-voltage, under-voltage, over-power, or over-current conditions.
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