Adafruit Grove & Stemma QT FeatherWing

This FeatherWing is compatible with all Adafruit Feather boards that use the standard Feather pinout and form factor. This includes boards based on ESP32, ESP32-S2/S3, nRF52840, SAMD21, RP2040, and others. You must solder the included 16-pin headers to your specific Feather board for a secure mechanical and electrical connection. Always cross-reference the FeatherWing's labeled ports (A0, A1, RX/TX, SDA/SCL) with your Feather's pinout diagram, as capabilities like analog input count or UART availability vary by MCU.

Match the Grove sensor's signal type to the corresponding labeled port on the FeatherWing. Analog sensors (like light or sound) connect to the A0, A1, or A2 Analog/Digital ports. I2C sensors use either of the two I2C Grove ports or the vertical Stemma QT connector. UART (Serial) devices, like some GPS modules, must use the dedicated RX/TX UART port. The Grove cable's 4-pin 2mm connector is keyed to prevent reverse insertion. Ensure your host Feather's firmware configures the correct pins for the chosen communication protocol (I2C, AnalogRead, Serial).

The vertical Stemma QT connector (also known as Qwiic) is a 4-pin JST SH port that provides a modern, plug-and-play I2C interface. It allows you to connect Adafruit's extensive line of Stemma QT sensors and breakouts directly without soldering or using a Grove cable. You can also use it to daisy-chain multiple I2C devices. It shares the same I2C bus (SDA/SCL) as the two Grove I2C ports on the FeatherWing, meaning all I2C devices connected to these three ports will be on the same bus, requiring unique I2C addresses to function together.