ESP8266 modification for zirrfa v5.1 IN14 nixie clock board

Cheap boards "Zirrfa nixie tube DIY kit" for nixie clock present on aliexpress. This project allows to expand functionality of this board.

Features:

• Automatic time update (via NTP server)
• Smooth fade in/out for digits
• Ability to change digits brightness (not implemented)

Notes:

• LEDs under the tubes are disabled (LED backlight with nixie tubes always looks bad)

Stock board

Modified board

Guide

Firmware

• Create file include/secret.h with code:

  const char *WIFI_SSID     = "your-wifi-ap-ssid";
  const char *WIFI_PASSWORD = "your-wifi-ap-password";
  

• Configure some values in Configurable constants section of main.cpp if needed
• Build and upload project with VScode + PlatformIO to ESP board

Hardware

Scheme PCB

TODO hardware mod guide

Parts:

• ESP board - WeMos D1 mini
• Zirrfa board v5.1