Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Chip Model | INA219 |
| Communication Interface | I²C / SMBus |
| Bus Voltage Range | 0V to 26V DC |
| Max Current Sense | ±3.2A (Standard Shunt) |
| Shunt Resistor | 0.1 Ohm, 1% Tolerance |
| Logic Supply Voltage | 3.3V or 5V |
| Measurement Accuracy | 0.5% Typical |
| PCB Dimensions | 20mm x 15mm x 3mm |
| Operating Temperature | -40°C to +85°C |
| Package Weight | 5 grams |
Anonymous
Apr 10, 2026
Rating: 5/5
Great for Arduino projects
Works perfectly with the Adafruit library. Measured my solar panel output accurately. Easy to wire up.
Anonymous
Apr 09, 2026
Rating: 5/5
Compact and reliable
Fits nicely in my enclosure. Zero-drift feature helps with stable readings over time.
Anonymous
Apr 08, 2026
Rating: 4/5
Does what it says
Had to calibrate the shunt value in code but otherwise straightforward. Fast shipping.
Anonymous
Jan 27, 2026
Rating: 5/5
Perfect for battery monitoring
Using this on a Raspberry Pi to monitor 12V battery drain. I2C address configurable via jumper.
Anonymous
Jan 23, 2026
Rating: 4/5
Good value sensor
Accuracy is decent for the price. Wish the solder pads were slightly larger for beginners.
Q: How do I connect the wires?
A: VIN+ to power source, VIN- to load, VCC/GND to MCU.
Q: What is the default I2C address?
A: The default address is 0x40, configurable via solder pads.
Q: Is there a library for ESP32?
A: Yes, most INA219 libraries support ESP32 boards.
Q: Can I measure higher currents?
A: Yes, by replacing the shunt resistor with a lower value.
Q: Can this handle 24V systems?
A: Yes, the bus voltage range supports up to 26V DC.
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