
Raspberry Pi HAT that exposes the Pi's I2C bus (3.3V, GND, SDA, SCL) on four Qwiic / STEMMA QT JST-SH connectors for daisy-chaining I2C sensors without breadboarding. Sold by Adafruit as product 4688.
Adafruit product page states the Qwiic HAT connects the Raspberry Pi I2C bus ground to the HAT Qwiic connectors.
Adafruit product page states the Qwiic HAT connects the Raspberry Pi 3.3V rail to the HAT Qwiic connectors.
I2C data line from the Raspberry Pi GPIO header to the Qwiic connector array, per the product page.
I2C clock line from the Raspberry Pi GPIO header to the Qwiic connector array, per the product page.
Four Qwiic/STEMMA QT connectors on the same I2C bus for daisy-chained sensors; modelled as the sold-board connector contract, not internal package pins.
Shield
Confirm the data interface matches your host board.
Module pins: 3.3V, GND, SDA, SCL. Schematik maps them to your board in the app.
About 270 add-ons across Pi HATs, Arduino shields, and FeatherWings. The same function — motor control, PoE, display — usually ships once per host connector family. Get the host board right first.
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| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| GND | ground | Adafruit product page states the Qwiic HAT connects the Raspberry Pi I2C bus ground to the HAT Qwiic connectors. | ||
| 3.3V | power | Adafruit product page states the Qwiic HAT connects the Raspberry Pi 3.3V rail to the HAT Qwiic connectors. | 3.3V | |
| SDA | signal | I2C data line from the Raspberry Pi GPIO header to the Qwiic connector array, per the product page. | 3.3V logic | |
| SCL | signal | I2C clock line from the Raspberry Pi GPIO header to the Qwiic connector array, per the product page. | 3.3V logic | |
| Qwiic connectors | connector | Four Qwiic/STEMMA QT connectors on the same I2C bus for daisy-chained sensors; modelled as the sold-board connector contract, not internal package pins. | 3.3V Qwiic/STEMMA QT bus |
Pan-Tilt HAT Kit