I built a tiny Unix‑like 'OS' with shell and filesystem for Arduino UNO (2KB RAM)

Article

• KernelUNO implements a Unix-like shell and filesystem on Arduino UNO’s 2KB RAM
• Supports basic commands, file operations, and GPIO control from CLI
• Written in C, fits within extreme memory constraints
• README authored by Claude AI per developer’s own note

Discussion

• GPIO interaction from CLI seen as most practically useful feature for hardware prototyping
• Bitlash (2010 Arduino shell) cited as predecessor
• ‘Unox’ floated as a missed naming opportunity
• Author’s self-deprecating Claude README note drew warm community response

Discuss on HN