Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Interface | I2C |
| Measurement Type | Bidirectional Current and Power |
| Supply Voltage | 3.3V to 5V |
| Max Bus Voltage | 26V |
| Shunt Resistor | 0.1 Ohm, 1% Tolerance |
| Current Range | +/- 3.2A (configurable) |
| Accuracy | High Precision with Zero-Drift Amplifier |
| Addressable | Yes, 4 selectable I2C addresses |
| Board Dimensions | 20mm x 15mm |
| Compatibility | Arduino, Raspberry Pi, ESP32, STM32 |
Anonymous
Mar 27, 2026
Rating: 5/5
Reliable and robust
We have bought ten of these for our makerspace. They have survived multiple student wiring errors and still function correctly. Very durable little board.
Anonymous
Mar 25, 2026
Rating: 5/5
Great for solar charge controller logging
Logging data from my small solar setup. The I2C interface saves GPIO pins on my ESP32. It handles the voltage range perfectly without any issues.
Anonymous
Mar 11, 2026
Rating: 4/5
Solid learning tool
Bought this for a university project. Documentation online is plentiful which helped me understand I2C communication better. Works as described.
Anonymous
Mar 09, 2026
Rating: 5/5
Essential for motor control
I use this to monitor current draw on my DC motors. The bidirectional capability is crucial for my regenerative braking tests. Highly recommended for robotics applications.
Anonymous
Mar 06, 2026
Rating: 4/5
Good accuracy, easy to wire
Setup was straightforward using the standard Adafruit library. The readings are consistent with my multimeter. Only giving 4 stars because the solder pads are a bit small for beginners.
Anonymous
Mar 04, 2026
Rating: 5/5
Perfect for battery monitoring projects
This module works flawlessly with my Arduino Uno. The library support is excellent, and reading both voltage and current simultaneously is very smooth. Great value for the price.
Q: Can this module measure negative current?
A: Yes, the INA219 supports bidirectional current measurement, allowing it to detect both charging and discharging currents effectively.
Q: How do I change the I2C address?
A: You can change the address by soldering bridges on the designated pads on the back of the PCB. The default is 0x40, with three other options available.
Q: Is a library available for Python on Raspberry Pi?
A: Yes, there are several open-source Python libraries available, including the popular CircuitPython and smbus2 implementations.
Q: What is the maximum voltage this sensor can handle?
A: The module can measure bus voltages up to 26V DC. Exceeding this limit may damage the chip.
Q: Does this come with header pins pre-soldered?
A: No, the module is typically shipped without headers to allow for flexible mounting options. You will need to solder your own headers or wires.
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