Adafruit INA219 High Side DC Current Sensor Breakout - 26V ±3.2A Max

This breakout board solves all your power-monitoring challenges with ease. Use the handy INA219 chip to measure both high side voltage and DC current draw over I2C with ±1% precision.

By integrating high side current measuring capabilities up to +26VDC, this chip remains reliably powered with 3 or 5V. It's perfect for tracking battery life or solar panels, reporting high side voltage even in complex circuits. A precision amplifier measures voltage across the 0.1 ohm, 1% sense resistor, accommodating up to ±3.2 Amps with an impressive resolution of 0.8mA.

Advanced users can modify the 0.1 ohm current sense resistor to expand or change its range, such as upgrading to 0.01 ohm for measurements up to 32 Amps with a resolution of 8mA. Included are a 6-pin header for easy breadboard attachment and a 3.5mm terminal plug for quick load connections.

Setup is straightforward. Power the sensor with 3 to 5VDC, connect two I2C pins to your microcontroller, link the target power supply to VIN+, and ground to VIN-. Simplified with Arduino or CircuitPython, a detailed tutorial enhances setup for immediate use.

Additionally, the SparkFun qwiic compatible STEMMA QT connectors facilitate I2C communication without welding the lines, further easing implementation. Connect effortlessly to your microcontroller using a STEMMA QT adapter cable while utilizing various related accessories. Note that the QT Cable is sold separately.