STEMMA

Adafruit's STEMMA interconnect system is a line of connectors and cables designed for easy prototyping and building of electronic projects. The system uses small, 3-pin and 4-pin JST PH connectors allow developers to quickly and easily connect various components and sensors. STEMMA is plug compatible with Seeed’s Grove and DFRobot’s Gravity interconnect systems, but should be verified for electrical/protocol compatibility.

A subset of STEMMA is the STEMMA QT connector, which utilizes a smaller 4-pin JST SH connector exclusively for I2C commination and is plug-and-play compatible with the SparkFun Qwiic connector standard. STEMMA/STEMMA QT is compatible with a wide range of devices, including microcontrollers, sensors, displays, and motors. With STEMMA, you can easily build and prototype your own electronic projects, from simple LED circuits to complex IoT systems.

Getting Started
Other Resources
- How to Build an ESP8266 Based Connected Flower Monitor
- Adafruit STEMMA Learn Guides and Projects
Products
- View all STEMMA products available at DigiKey
- Join Community

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Popular Board Interconnect Systems and How They Benefit Makers

Learn how connector ecosystems, like Qwiic, Grove, STEMMA and Gravity make it easy to quickly prototype projects without creating a rat’s nest of wires.