STEMMA QT / Qwiic breakout for the INA238 DC current, voltage, and power monitor with an onboard 15 mΩ shunt and I2C interface. Supports high/low-side measurements up to 85 VDC and 3–5 V logic.
| Pin | Type |
|---|---|
| VIN | Power |
| GND | Ground |
| SCL | I2C |
| SDA | I2C |
| STEMMA QT connectors | I2C |
| VIN+ | Unknown |
| VIN- | Unknown |
| VBUS | Power |
| VBUS jumper | Unknown |
| ALRT | Signal |
| A0A1 jumpers | Analog, Unknown |
| Power LED | Unknown |
I2C · Analog · 3.3 – 5 V · Breakout
Confirm the data interface matches your host board.
Module pins: VIN, 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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