Description
This breakout board solves power-monitoring problems by using the INA219 chip to measure both high side voltage and DC current draw over I2C with ±1% precision.
Important Note: Due to chip shortages, updated versions of this board use either INA219A or INA219B chips in SOT-23 or SOIC packages. The INA219A has ±1% max current measurement error, and INA219B has ±0.5% max current measurement error.
The INA219 allows high side current measuring up to +26VDC, even though powered by 3 or 5V. It measures voltage across a 0.1 ohm, 1% sense resistor with a precision amplifier and uses a 12-bit ADC for current measurement.
The sensor includes a 6-pin header for breadboard connection and a 3.5mm terminal plug for easy attachment/detachment of your load. STEMMA QT connectors make I2C wiring solderless and easy to use with various accessories.
- Measures up to +26V and ±3.2A current with ±0.8mA resolution
- ±1% or ±0.5% current measurement error depending on chip version
- Simplifies current and voltage measurements on high side
- Includes 6-pin header, 3.5mm terminal block, and STEMMA QT connectors
- Compatible with Arduino and CircuitPython with available tutorials
Product dimensions: 25.6mm x 20.4mm x 4.7mm / 1.0″ x 0.8″ x 0.2″.
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