The Adafruit Pi Stemma adds a 4-pin JST SH (Stemma QT/Qwiic) connector to a Raspberry Pi via a 2×3 socket. It connects directly to the Pi’s I²C bus, includes a 3.3V regulator, power LED, and 10K pull-ups for reliable I²C use with sensors and devices.
The Adafruit Pi Stemma is a small, easily removable breakout that easily adds a 4-pin JST SH pin (Stemma QT or Qwiic) connector to your Raspberry Pi. The 2×3 socket design allows you to plug securely into the Pi’s I2C bus with no soldering required. Works great if you want to add a QT connector for quick I2C sensor and devices integration without any header-fiddling.
Pi Stemma has a 2×3 header on top that connects to the power and I2C pins; simply line up with the edge of the 2×20 connector on your Pi or Pi Compatible. It has a single JST SH connector that connects to your Pi’s I2C bus (SDA, SCL, 3V, and Ground). It also features a 3.3V regulator, allowing it to work with all Qwiic or Stemma QT devices without risking a brownout dip. A green LED lets you know it’s powered correctly. We also added two 10K pull-up resistors since there are some Pi-compatible boards that don’t have them included.
You can use it with any Linux single board computer or microcontroller that has a ‘2×20 Pi-compatible pinout’ (there are a lot!) and then check out Blinka our Python interface library, so you can use our huge collection of CircuitPython libraries on SBC computers using Python!
- Please note: Raspberry Pi, sensor, and Qwiic cable are not included.
Specifications
- Product Dimensions: 15.2mm x 15.0mm x 5.5mm
- Product Weight: 1.1g
Resources
- Guide
Package Contents
- 1x Adafruit Pi Stemma QT Breakout for Raspberry Pi and Compatibles
- Raspberry Pi, sensor, and Qwiic cable are not included.



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