INA219-based FeatherWing for measuring high-side voltage and DC current draw over I2C with 1% precision. Supports up to four boards per Feather via configurable I2C address.
INA219-based FeatherWing for measuring high-side voltage and DC current draw over I2C with 1% precision. Supports up to four boards per Feather via configurable I2C address.
Board power input. Source states to power the board with the same voltage as the microcontroller logic level, for example 5V on Arduino or 3.3V on Feather.
Common ground for board power and logic.
I2C clock line. Source states a 10K pull-up is present on this pin.
I2C data line. Source states a 10K pull-up is present on this pin.
STEMMA QT connector for I2C connection to compatible development boards or accessories.
Positive input for current sensing. Source says connect to supply for high-side sensing, or load ground for low-side sensing.
Negative input for current sensing. Source says connect to load for high-side sensing, or board ground for low-side sensing.
I2C address select jumper. Source states soldering A0 changes the default address from 0x40 to 0x41, or with A1 to 0x45.
I2C address select jumper. Source states soldering A1 changes the default address from 0x40 to 0x44, or with A0 to 0x45.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| VIN | power | Board power input. Source states to power the board with the same voltage as the microcontroller logic level, for example 5V on Arduino or 3.3V on Feather. | 2.7V to 5.5V board supply, use same logic level as host | |
| GND | ground | Common ground for board power and logic. | 0V | |
| SCL | i2c | I2C clock line. Source states a 10K pull-up is present on this pin. | logic-level I2C, tied to host logic level via board power | |
| SDA | i2c | I2C data line. Source states a 10K pull-up is present on this pin. |
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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| logic-level I2C, tied to host logic level via board power |
| STEMMA QT | connector | STEMMA QT connector for I2C connection to compatible development boards or accessories. | logic-level I2C, tied to board power |
| Vin+ | sense | Positive input for current sensing. Source says connect to supply for high-side sensing, or load ground for low-side sensing. | up to +26VDC high-side measurement per product page |
| Vin- | sense | Negative input for current sensing. Source says connect to load for high-side sensing, or board ground for low-side sensing. | measurement input paired with Vin+ |
| A0 solder jumper | configuration | I2C address select jumper. Source states soldering A0 changes the default address from 0x40 to 0x41, or with A1 to 0x45. | pulls address pin up to VIN when bridged |
| A1 solder jumper | configuration | I2C address select jumper. Source states soldering A1 changes the default address from 0x40 to 0x44, or with A0 to 0x45. | pulls address pin up to VIN when bridged |