Zephyr Projects

A high-efficiency, passive BLE advertising packet sniffer for the Nordic nRF54L15-DK powered by Zephyr RTOS. It utilizes zero-copy pipelines and deferred logging to ensure high throughput and minimal packet loss during dense wireless traffic.

A high-performance development board featuring the NXP iMX RT1011 Crossover MCU with an ARM Cortex-M7 core running at 500MHz. It supports the Zephyr RTOS and Python environments, offering 128 KB RAM, 128 Mb QSPI Flash, and a compact USB-C form factor for rapid prototyping.

A native Zephyr RTOS implementation of the Meshtastic mesh radio protocol for off-grid communication. It leverages Zephyr's hardware abstraction for LoRa, Bluetooth LE, and GNSS to provide a modular, portable stack compatible with the official Meshtastic ecosystem. The project includes features like AES-CTR encryption, packet routing, and a comprehensive shell interface for node management.

Beremiz4uC is a real-time runtime environment that executes Beremiz IDE PLC programs on STM32F4 microcontrollers using Zephyr RTOS. It features dynamic code loading via udynlink, eRPC-based communication, and flexible I/O management for industrial control applications.

A specialized harness designed for AI-assisted embedded firmware development using the Zephyr RTOS. It provides a comprehensive set of 'Agent Skills' covering core Zephyr subsystems like BLE, device drivers, and kernel primitives to help AI agents generate, understand, and manage firmware code efficiently.

The Infuse-IoT SDK is a modular development framework built on the Zephyr RTOS, designed for creating ultra-low-power IoT solutions. It provides specialized subsystems for time-series data logging, task scheduling, and secure communication, primarily targeting Nordic Semiconductor and STMicroelectronics hardware.

A lightweight Baseboard Management Controller (BMC) firmware built on Zephyr RTOS for STM32 and RISC-V microcontrollers. It provides essential server management features including a Redfish-compliant API, host power control, and a web-based administration interface.

Tenstorrent System Firmware is a Zephyr RTOS-based firmware stack designed for Tenstorrent AI hardware controllers. It manages the System Management Controller (SMC) and Device Management Controller (DMC) for platforms like Blackhole and Grendel, providing custom drivers for AI accelerators and supporting secure updates via MCUboot.

The nRF54L15 Connect Kit is a rapid prototyping platform for next-generation IoT devices based on the Nordic nRF54L15 multiprotocol SoC. It utilizes the Zephyr RTOS and nRF Connect SDK to support Bluetooth Low Energy 6.0, Thread, Matter, and Zigbee. The hardware features an integrated nRF52820-based Interface MCU for onboard debugging and a high-efficiency TPS63901 buck-boost converter for flexible power management.

Alice is an Android-based autofocus controller that utilizes Intel RealSense depth sensors to provide external autofocus for cinema cameras. The system leverages a Zephyr RTOS-based nRF52840 wireless bridge to communicate with Tilta Nucleus Nano II focus motors, enabling AF capabilities for manual and adapted lenses.

Breeze is a modular embedded software framework based on Zephyr RTOS, specifically designed for RoboMaster competition robots. It provides specialized drivers for DJI motors and CAN bus management, along with integrated logging and system monitoring. The framework utilizes the West meta-tool for workspace management and incorporates libraries like littlefs to provide a robust environment for complex robotic systems.

zbot is an open-source embedded AI agent powered by Zephyr RTOS that implements a ReAct (Reason + Act) loop. It enables hardware control, persistent memory, and multi-step skills by connecting to OpenAI-compatible LLM APIs, targeting the nRF7002-DK and Linux simulation.

Pulse is a real-time vibration anomaly detection system for microcontrollers that enables predictive maintenance without cloud connectivity. It leverages the Zephyr RTOS and STMicroelectronics NanoEdge AI on an STM32L412RB to provide a standalone, low-cost solution for monitoring industrial machinery.

An ergonomic split keyboard project featuring a 5x7 Dactyl Manuform layout and an integrated PMW3610 trackball. It runs on ZMK Firmware powered by the Zephyr RTOS and utilizes an nRF52840 microcontroller for wireless connectivity.

A GNSS-based tracking application built on Zephyr RTOS that transmits location and ignition status over LoRaWAN using ABP authentication. It targets the ESP32 WROOM 32 and utilizes UART-based GNSS modules and Smart Modular LoRaWAN modems for cloud connectivity.

A comprehensive collection of Zephyr-based applications demonstrating the development of CoAP-enabled Thread networks. The project covers essential IoT concepts including network commissioning, secure communication via DTLS and X.509 certificates, service discovery, and power optimization for wireless sensor nodes.

A lightweight C implementation of the Ephemeral Diffie-Hellman Over COSE (EDHOC) protocol (RFC 9528) designed for constrained IoT devices. It provides mutual authentication and forward secrecy with a minimal footprint, featuring native Zephyr RTOS integration and stack-only memory allocation.

A non-IP communication protocol designed for resource-constrained devices to interact with cloud services through gateways. Implemented as a Zephyr module, it supports various transports like BLE GATT and provides built-in support for Golioth services including logging, OTA updates, and data streaming.

An open-source smartwatch firmware built on the Zephyr RTOS and LVGL graphics library. It targets the ESP32-S3-Touch-LCD-1.28 hardware, featuring BLE time synchronization, device information services, and a real-time counter for time tracking.

A custom behavior module for ZMK Firmware that implements tri-state logic, allowing keys to persist state until interrupted. It enables advanced keyboard features like 'Swapper' for window switching and is fully compatible with Zephyr RTOS 3.5.

Pulse is an embedded vibration monitoring system built on Zephyr RTOS for the STM32L412RB microcontroller. It utilizes ST's NanoEdge AI for on-device machine learning to detect mechanical anomalies in motors, pumps, and fans without cloud connectivity. The system features persistent training data storage and a real-time Python-based GUI for monitoring.

A 38-key column-staggered split keyboard designed for Cherry MX spacing. It supports Seeed Studio XIAO RP2040 or nRF52840 microcontrollers and is a replica of the original TOTEM keyboard design adapted for 19.05x19.05mm switch spacing.

VaktBLE is a security framework that acts as a benevolent Man-in-the-Middle bridge to protect BLE peripherals from malicious central devices. It utilizes non-compliant BLE firmware on nRF52840 hardware to validate link-layer packets in real-time, shielding targets like ESP32 from protocol-level attacks without requiring modifications to the target's firmware.

An open-source Zigbee-based environmental sensor platform powered by the nRF54L MCU and running the Zephyr RTOS. It monitors temperature, humidity, pressure, air quality (IAQ, VOC, CO2), and light intensity, designed for integration with Home Automation systems via Zigbee2MQTT.

An open-source firmware for USB to CAN adapters based on the Zephyr RTOS. It implements the Geschwister Schneider (gs_usb) protocol, supporting CAN classic, CAN FD, and hardware timestamping across various microcontroller platforms.

A Zephyr RTOS-based firmware for an open-source hardware eBook reader targeting the Raspberry Pi Pico (RP2040/RP2350). It supports ePaper displays and SD card storage to provide a portable, low-power reading experience for EPUB files.

A lightweight, non-intrusive runtime visualizer for Zephyr RTOS applications. It utilizes SWD probes to perform real-time analysis of thread statistics, stack watermarks, and heap usage without halting the target CPU.

A low-profile, 17-switch pointer peripheral designed for Seeed Studio XIAO BLE or Pro Micro form factor MCUs. It integrates a PAT9125EL optical sensor with a custom magnetic trackball mount and runs on the ZMK firmware framework.

An nRF52840-based Zigbee sensor designed to monitor flow and return temperatures in heating systems using dual NTC thermistor probes. Built with the nRF Connect SDK and Zephyr RTOS, it is optimized for ultra-low power consumption, achieving over a year of battery life on a coin cell.

A curriculum and project repository for building embedded medical devices using the Zephyr RTOS and Nordic nRF Connect SDK. It features hands-on labs for the nRF52833DK, covering real-time operating system fundamentals, Bluetooth Low Energy, and sensor integration.

An alternative firmware for the SKS AIRSPY tire pressure sensor based on the Zephyr RTOS. It implements the ANT+ TPMS device profile to allow integration with standard cycling computers, replacing the proprietary Bluetooth-only stock firmware. The project targets the nRF52832 SoC and supports features like OTA updates via MCUBoot and BLE logging.

A board support package and configuration repository for Nicenano and NRF52840 Supermini development kits in PlatformIO. It provides variant definitions, pin mappings, and setup instructions for the Adafruit nRF52 Arduino framework and Zephyr RTOS.

A comprehensive development environment and example collection for using the Zephyr RTOS on Raspberry Pi Pico and Pico 2. It features automated installation scripts, VSCode integration for debugging, and networking examples for the RP2040 and RP2350 platforms.

A comprehensive device SDK for the Spotflow observability platform, primarily targeting Zephyr RTOS and ESP-IDF. It provides integrated logging backends, coredump collection, and cloud-synchronized configuration for embedded devices across various hardware platforms including ESP32, Nordic nRF, and NXP.

The official Zephyr RTOS firmware repository for Tenstorrent AI hardware. It provides comprehensive platform support, custom drivers, and application frameworks for Tenstorrent's AI ULC products, leveraging a specialized Zephyr fork.

A set of Docker images providing a complete development environment for the Zephyr RTOS. It includes the Zephyr SDK, West meta-tool, and all necessary dependencies to build, flash, and debug applications for various architectures including Arm Cortex-M.