upyOS is a modular, lightweight MicroPython-based operating system (OS) that provides a Unix-like experience on low-resource microcontrollers such as Espressif Systems ESP32/ESP32-C3/ESP32-S3, Raspberry Pi RP2040, and others. Inspired by smolOS, upyOS offers remote development tools, OTA updates, and a built-in web server. Its modular architecture separates system functions into reusable components, instead of large, monolithic programs. Key Features: Modular architecture: Commands and system functionality are broken down into small, independent modules to reduce memory usage. Built-in shell environment: Execute commands and scripts directly, providing a Unix-like CLI experience. Startup and shutdown scripting: Configure boot and shutdown behaviors using /etc/init.sh and /etc/end.sh. Recovery mode: A built-in failsafe mechanism lets users recover the system when booting fails. Background execution: Supports threads and asyncio for background tasks, along with & sufix, hold, resume, kill and killall commands for process control. Remote development support: Telnet and FTP servers allow file transfer and terminal access over […]
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Read more here: https://www.cnx-software.com/2025/10/09/upyos-modular-micropython-based-os-for-microcontrollers-esp32-rp2040/
