Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
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Updated
Nov 3, 2025 - C
The Zephyr RTOS is a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource constrained devices, and built with security in mind. It is based on a small-footprint kernel designed for use on resource-constrained systems: from simple embedded environmental sensors and LED wearables to sophisticated smart watches and IoT wireless gateways. The kernel supports multiple architectures and a large number of supported boards (and growing.)
Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
Versatile Prototyping Kit based on the nRF9151 SiP supporting LTE-M/NB-IoT Worldwide, DECT NR+ and GNSS
Started as a firmware for https://hackaday.io/project/177237-corexy-pen-plotter, possibly could be adapted to other CNCs as well.
Rapid Prototyping Kit for Your Next-Gen IoT Devices powered by the nRF54L15 Multiprotocol SoC
Zephyr RTOS Button sample for Raspberry Pi Pico with debug capability on VS Code
Device SDK for Spotflow embedded observability platform.
Turn a plasma ball into a touch sensor
Zephyr OS Basic Button Input project with Polling method using STM32F3DISCOVERY Board
Weather Station System based on LoRaWAN technology. System includes weather station sensors End node, Gateway, Network Server and applications.
Zephyr OS Basic Blinky project running on STM32F3DISCOVERY Board
Zephyr OS Fancier Blinky project running on STM32F3DISCOVERY Board
Released October 17, 2017