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Yet another Nixie clock project!

Some highlights:

  • K155ID1 driven IN-12A or IN-12B tubes for hour, minute, seconds
  • BS107 driven IN-6 or similar for separation
  • ESP8266 for time synchronization and web interface
  • LM1117 (3.3V regulator) for logic power supply
  • No tube step up converter on-board, pin headers for connecting third party power supply
  • KiCad design with 3D models from

Some KiCad screenshots:


Boot ESP8266 with program pin held low and flash MicroPython: --port /dev/ttyUSB0 --baud 460800 erase_flash --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 esp8266-20170612-v1.9.1.bin 

Upload and and adjust network configuration in accordingly.