Make Your Own Retro Nixie Clock With an RTC! : 7 Steps (with Pictures) - Instructables
Retro Clocks using Arduino and Wemos controllers
ArduiNIX™
6 Digit Nixie Clock Kit, Open Source Arduino - YouTube
IN-14 Arduino Shield Nixie Tubes Clock in a Clear Acrylic Case [RGB, USB, Musical] [with Columns and Sockets] [Temp. sensor, GPS time sync., IR Remote] – GRA & AFCH