Jeremy g. on hackaday.io created this tiny retro clock:
Micro NumiTron clock
Super tiny, Micro clock using a Numitron as its display. Running off a 400mAh lipo battery.
The assembled version is available on Tindie: NumiClock Mini
Jeremy g. on hackaday.io created this tiny retro clock:
Super tiny, Micro clock using a Numitron as its display. Running off a 400mAh lipo battery.
The assembled version is available on Tindie: NumiClock Mini
OSH Park 