JJY Signal Simulator with ESP32 — 5m Range DIY Build
Build a JJY atomic time signal simulator with an ESP32, ferrite coil, and L9110S driver. Syncs Japanese radio-controlled clocks from 5 meters — outside Japan.
Olaf Krawczyk
Senior Software Engineer
I build full-stack systems with TypeScript and GraphQL, co-organize meet.js Poznań, and write about the things I figure out along the way.