Adafruit INA219 FeatherWing

The INA219 FeatherWing makes power-monitoring problems a thing of the past.

VIN
Board power input. Adafruit pinouts state VIN powers the board at the same logic level as the microcontroller, for example 5V with Arduino or 3.3V with Feather.
Type · powerVoltage · 2.7V to 5.5V board/sensor supply, use 3.3V with Feather or 5V with 5V microcontroller per Adafruit pinouts
GND
Common ground for power and logic.
Type · groundVoltage · 0V
SCL
I2C clock line. Adafruit notes a 10K pullup on this pin.
Type · i2cVoltage · logic level of host board
SDA
I2C data line. Adafruit notes a 10K pullup on this pin.
Type · i2cVoltage · logic level of host board
STEMMA QT
STEMMA QT / Qwiic connector for the same I2C and power interface.
Type · connectorVoltage · same VIN/GND/I2C logic interface

Start wiring

I2C · SPI · 2.7V to 5.5V board/sensor supply, use 3.3V with Feather or 5V with 5V microcontroller per Adafruit pinouts · 0V

Confirm the data interface matches your host board.

Module pins: VIN, GND, SCL, SDA. Schematik maps them to your board in the app.

Related groups

4 groups

Connectors

Sort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.

Connectors & cables · Connectors · 28 parts

Displays

Character LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.

Displays · TFT & LCD displays · 35 parts

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 31 parts

MCUs and boards

ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.

Boards · Microcontroller boards · 27 parts

Pin	Type	Function	Voltage
VIN	power	Board power input. Adafruit pinouts state VIN powers the board at the same logic level as the microcontroller, for example 5V with Arduino or 3.3V with Feather.	2.7V to 5.5V board/sensor supply, use 3.3V with Feather or 5V with 5V microcontroller per Adafruit pinouts
GND	ground	Common ground for power and logic.	0V
SCL	i2c	I2C clock line. Adafruit notes a 10K pullup on this pin.	logic level of host board
SDA	i2c	I2C data line. Adafruit notes a 10K pullup on this pin.	logic level of host board
STEMMA QT	connector	STEMMA QT / Qwiic connector for the same I2C and power interface.	same VIN/GND/I2C logic interface
VIN+	sense	Positive input for current sensing. Connect to supply for high-side current sensing or to load ground for low-side sensing.	measured high-side bus up to +26VDC per Adafruit product description
VIN-	sense	Negative input for current sensing. Connect to load for high-side sensing or board ground for low-side sensing.	measured high-side bus up to +26VDC per Adafruit product description
A0	configuration	Address-select solder jumper. Bridging A0 changes the I2C address from default 0x40 to 0x41, or 0x45 when A1 is also bridged.	pulls address pin up to VIN when soldered
A1	configuration	Address-select solder jumper. Bridging A1 changes the I2C address from default 0x40 to 0x44, or 0x45 when A0 is also bridged.	pulls address pin up to VIN when soldered

Pinout

Start wiring

Connectors

Displays

Air quality

MCUs and boards