Halo Chroma Kit (No Tubes)

Price: £54.95

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Halo Chroma - our new kit for Z560M, ZM1020, GN-4  and compatible tubes; We have a selection of suitable tubes HERE

What's new on the Halo Chroma
Matte Black PCB with Gold pads
RGB LED Tube Lighting
Simple Anode Drivers, with socketed optoisolators, for easier assembly and troubleshooting
Double dot colon neons, with many modes
Rapid switching from standard time to summer time with one button press
Support for our XTERNA Wireless Time and Temperature Transmitter

Tube Compatibilty Listing:



Hex standoffs not included. If you buy one of our cases, all hardware is included anyway. If you are making your own case and need some standoffs, we have several sizes here.

  • Hobby Kit of Electronic Components
  • Hours, Minutes and Seconds display on six tubes with typical 15.5mm digit height
  • Tubes are socket for easy plug in and out
  • Uses a Quartz Crystal Oscillator as the timebase
  • 12 or 24 hour modes
  • Programmable leading zero blanking
  • Date display in either DD.MM.YY or MM.DD.YY or YY.MM.DD format
  • Programmable date display each minute
  • Scrolling display of date or standard display
  • Alarm, with programmable snooze period
  • Optional GPS / WiFi / XTERNA synchronisation with status indicator LED
  • Dedicated DST button to switch between DST and standard time
  • Supercapacitor backup. Keeps time during short power outages
  • Simple time setting using two buttons
  • Configurable for leading zero blanking
  • Double dot colon neon lamps
  • 11 colon neon modes including AM / PM indication (top / bottom or left / right), railroad (slow or fast) etc.
  • Seconds can be reset to zero to precisely the set time
  • Programmable night mode - blanked or dimmed display to save tubes or prevent sleep disturbance
  • Rear Indicator LEDs dim at night to prevent sleep disturbance
  • Weekday aware ‘Master Blank’ function to turn off tubes and LEDs on weekends or during working hours
  • Separate modes for colon neons during night mode
  • Standard, fading, or crossfading with scrollback display modes
  • ‘Slot Machine’ Cathode poisoning prevention routine
  • Programmable RGB tube lighting – select your favourite colour palette
  • Over 700 colours / intensities possible. Have a different colour or your choosing every hour, or autochanging colours
  • Not AC frequency dependent – works in all countries
  • All user preferences stored to non-volatile memory
  • Additional wireless functions if XTERNA module used:
    - Display of outdoor temperature in Celsius or Fahrenheit.
    - Min / Max temperature in last 24 hours

    - Wireless, Auto Sync of time from GPS with auxilliary TCXO
    - GPS Sync time, and time since last GPS Fix
    - Voltage of XTERNA module battery

Download Kit Assembly Instructions Here

Rear view of the clockshowing the control switches, indicator LEDs etc.

Drive Mode

The tubes are driven by a modern HV5812 High Voltage Driver IC by Supertex. With 20 outputs, it is able to drive the six Nixie Tubes in a very comfortable and low noise 3X2 multiplex.

Time Synchronisation Options
A range Auto Synchronisation options are available: GPS, WiFi, or our exciting new XTERNA Wireless Time and Temperature Transmitter, in conjunction with the Xterna Adapter

Xterna Module (Clock also requires Xterna Adapter)


The following electronic components are provided, including:

All transistors, resistors, capacitors, ICs, diodes
4 X Neon bulbs for hours:minutes:seconds separators
Double sided, plated - through - hole PCB with black solder resist
Fully pre-programmed PIC microcontroller, with socket
66 High quality Gold sockets for the tubes.
RGB LED Tube Lights

Power supply and tubes not included. You can find them in our store.


Case not included, but available in our store


You will need a 500mA 12V DC Power Adapter. It is not included, but you can find the specification here, and if you don't already have one at home or office, we have them for sale.

Download Kit Assembly Instructions Here


  • Shipping Weight: 0.29kgs
  • 93 Units in Stock