DejaOS
JavaScript Runtime Environment for Embedded Devices - Make embedded application development easier with JavaScript.
JavaScript Everywhere in Embedded World
DejaOS makes embedded application development painless and efficient. Use JavaScript to control hardware interfaces, create beautiful GUIs, and build network applications. Leverage the power of QuickJS engine and LVGL graphics library. Develop with real-time sync and debugging capabilities. From IoT devices to smart terminals, DejaOS powers the future of embedded computing!Start Building in Minutes
Set up your DejaOS development environment quickly. Get instructions for installing VSCode extension, connecting your device, and start coding your first embedded JavaScript application.
I want to set up development environment
Install GuideI want to see supported devices
Device ListPowerful Features for Embedded Development
DejaOS is feature-packed, providing everything you need for modern embedded application development!
Hardware Interface Modules
Control GPIO, PWM, UART, USB, NFC, QR Code, Bluetooth, and more with simple JavaScript APIs. Full hardware abstraction layer for easy device integration.
Modern GUI Development
Create beautiful user interfaces using JavaScript and LVGL. Support for touch screens, custom widgets, and responsive layouts.
Network & Communication
Built-in support for TCP, UDP, HTTP, MQTT, Web Server, and various communication protocols for IoT applications.
Real-time Development
Live code sync from VSCode to device, instant debugging, and hot reload capabilities for faster development cycles.
Multi-threading Support
JavaScript Worker threads for concurrent operations, EventBus for inter-thread communication, and thread pool management.
Database & Storage
SQLite database support, file system operations, and persistent storage capabilities for data management.
Security & Encryption
Built-in encryption/decryption modules, secure communication protocols, and authentication mechanisms.
Third-party Module Support
Import and use any npm package or pure JavaScript modules with ES6 import syntax.
Production Deployment
Easy DPK packaging system for deploying applications to production devices with automatic updates.
Cross-platform Compatibility
Support for various ARM-based devices, with continuous expansion to new hardware platforms.
Development Experience You Will Love
Enjoy modern development tools with VSCode integration, real-time debugging, and comprehensive documentation. Build embedded applications with the same ease as web development.
Technical Foundation
Built on proven technologies for reliability and performance
QuickJS Engine
Fast and lightweight JavaScript engine supporting ES2020 standard, perfect for resource-constrained embedded devices.
LVGL Graphics Library
Popular open-source embedded graphics library providing rich UI components and smooth animations.
Mip/ARMLinux
Embedded Linux distribution with full system capabilities, process management, and resource scheduling.