YUMO CLOCK is the fourth build from YUMO BUILDS — a fully working desk clock built entirely from hand-bent 1mm brass rods on a hand-turned wooden base. No 3D printing, no CNC, no moulds. Every angle bent by hand.
— build your own.
Full source code on GitHub:
github.com/yumobuilds/YUMO-GLOBE
Watch the build:
https://www.youtube.com/watch?v=EUGc3DatJw4
An ESP32-C3 Super Mini drives a 4-digit 7-segment display (LTD-4608E) via hardware-multiplexed ISR at 333Hz — zero flicker, even while WiFi and LED tasks run in parallel. Five SK6812 LEDs inside the frame: four ring the base, one at the top.
WiFiManager captive portal on first boot — no hardcoded credentials. Timezone auto-detected via IP geolocation. Syncs every hour with pool.ntp.org and time.google.com.
Five-stage startup LED sequence synced to the display: warm spinner, cool fill, countdown rainbow, neon burst, white strobe finale. Top LED solos after — breathing neon colours, triple-flashing every 30s, full neon show every h