Three-channel INA3221 high/low-side power monitor breakout for measuring voltage and current on up to three rails over I2C. Includes STEMMA QT / Qwiic connectors and screw-terminal channel inputs.
| Pin | Type |
|---|---|
| VCC | Power |
| GND | Ground |
| VPU | Power |
| SCL | I2C |
| SDA | I2C |
| STEMMA QT connectors | I2C |
| VIN1+VIN1- | Power |
| VIN2+VIN2- | Power |
| VIN3+VIN3- | Power |
| WRN | GPIO |
| CRI | GPIO |
| TC | GPIO |
| VALID | GPIO |
| Addr jumper | Unknown |
| LED jumper | Unknown |
I2C · Analog · 3.3 – 5 V · Breakout
Confirm the data interface matches your host board.
Module pins: VCC, VPU, GND, SCL, SDA. Schematik maps them to your board in the app.
INA-series I2C monitors, Hall-effect sensors like the ACS723 and Gravity 20A/50A boards, and non-invasive CT clamps for everything from 3.3V rail telemetry to mains current sensing.
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