DIY Assembled boards for Nixie Clock on IN-8 Nixie tubes and IN-3 as dots. Tubes are inserted into sockets, so they are easy to replace
Note: UPS Express delivery is highly recommended
Economy Shipping can be very slow and unreliable


Project “Divergence Meter” has modular system, so you can build clock with 6 [hours : minutes : seconds] tubes. For clock 6 tubes you need one MCU boards NCM107 and one Tubes board NCT408.

PCB design, schematic, housing and software made by GRA & AFCH.

Kit includes fully assembled board(s), MCU (microcontroller unit) ATmega328P flashed with Arduino Uno Bootloader and sketch (Firmware).

Kit compatible with Arduino Uno, so it allows you to write your own unique programs on the Arduino platform, the latest sources are always available on github at the "NixeClock" repository.



This lot contains assembled boards, flashed microcontroller (ATmega328P), Nixie tubes and power supply:

  • 1 pc – assembled MCU board NCM109**
  • 1 pc – assembled Tubes boards NCT408 with Socket for IN-8.
  • Flashed MCU with Arduino bootloader and NixieClock sketch firmware.
  • 6 pcs – IN-8 Nixie tubes
  • 2 pcs - IN-3 dots neon lamps
  • Power supplay 12V, 1A for any country – (see selector on top of screen)
  • Set of hex pillars.
  • User manual on vintage-style paper.
  • Paper electrical scheme.
*The MCU board support a variety of tubes, such: ZM1042, Z522M, Z566M, Z5220M, ZM1040, Z5660M, B566M, LC-631, IN-14, IN-18, IN-12, IN-8, IN-7, IN-1, IN-2, IN-4, IN-8, IN-15, IN-16, IN-17 to use this tubes You need appropriate tubes PCB(s).



Dear customers!
If you have ANY questions, (PLEASE ASK us).


Software Features:

  • Clock support many kinds of Nixie tubes (6 tubes [hh:mm:ss] format and 4 tubes [hh:mm])
  • 12/24 hour format.
  • Date format: DD:MM:YY
  • Slot Machine (Ani poisoning)
  • Unique RGB LEDs backlight with 16,7 million colors.
  • Very easy to switch LEDS off/on.
  • As alarm sound clock uses standard RTTTL (Nokia format) melodies, so You can easy change it. (included songs: mission impossible, we wish you).
  • Easy updating firmware via USB using Arduino IDE.
  • Software based on Arduino sketch, so MCU has Arduino bootloader within.
  • Power On Self-Test (POST): LEDs test, tubes test, input voltage test, sound test.


Hardware Features:

  • Integrated High Voltage Power supply 150 – 220V.
  • Tubes installed in sockets, and can therefore be easily replaced.
  • ICSP connector for flashing Arduino Bootloader to blank MCU.
  • 3 PWM channels for RGB LEDs 8 bit per channel = 24bit = 16,7 million colors. It can be disabled in the menu (see manual).
  • Test points for testing, adjust and control low and high voltage circuits.
  • Pads for internal buttons and terminals for external buttons.
  • Pads for internal USB connector and terminals for external USB.
  • Terminals for internal and external power connector.
  • Terminals for external and internal buzzer.
  • 2 dots column with separate controls upper and lower dots.
  • Power consumption: 11-14V, 360mA (Recommended power source: voltage 12V, current 1-2A).
  • MCU board NCM107 has world smallest size: 100mmx50mm.
  • Tubes board NCT408 size: 200mmx50mm.

Actual photos of Tubes PCBs:


Boards Dimensions in 2D and 3D


User Manual







Dear customers!
If you have ANY questions, (PLEASE ASK us).



Shipping and Return information


All Items are shipped from Ukraine
Via International registered Airmail
Shipments are made within 1 business day
After the payments are received and verified
It takes about 4-7 days via UPS Express delivery
It takes about 10-18 days via Standard shipping
It takes about 35-45 days via Economy shipping
We combine multiple Items to save on shipping



UPS Express Shipping time (recommended):

Europe:3-5 days
Germany:3-5 days
USA, Canada:4-7 days
Asia, South America:5-7 days
Australia, New Zealand:5-7 days
Africa, Central America:5-7 days



Standard Shipping time:

Europe:10-12 days
Germany:10-12 days
USA, Canada:10-15 days
Asia, South America:10-18 days
Australia, New Zealand:12-18 days
Africa, Central America:12-18 days



Economy Shipping time:

Europe:25-30 days
Germany:25-30 days
USA, Canada:30-35 days
Asia, South America:35-45 days
Australia, New Zealand:45-55 days
Africa, Central America:45-55 days




Return Policy

All Returns are accepted

  • For Return you should contact Us within 14 Days after receiving the Item
  • Refunds are made as Money back or Replacements (buyer’s choice)
  • Return Shipments are paid by the buyer
  • No restocking fees are charged