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Adafruit INA3221 - Triple 0-26 VDC, ±3.2 Amp Power Monitor

Adafruit INA3221 - Triple 0-26 VDC, ±3.2 Amp Power Monitor

Pimoroni

£9.13

Price read from Pimoroni on 2026-10-22. Check before buying.

This breakout board will solve all your multi-rail power-monitoring problems. Instead of struggling with up to 6 multimeters, you can just use the handy INA3221 chip on this breakout to both measure both the high side voltage and DC current draw of up to three power supplies over I2C with ±1% precision. Most current-measuring devices such as our current panel meter are only good for low side measuring. That means that unless you want to get a battery involved, you have to stick the measurement resistor between the target ground and true ground. This can cause problems with circuits since elect

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