Lars & Lena Miniature USB powered Nixie clock kits

Lars (6 x IN-17 tubes) and Lena (4 x IN-12 + 2 x IN-17 tubes) (the Laura kit is now fully sold out) are Mr.Nixie’s new creation of a series of tiny Nixie clocks starting with the IN-17 and IN-12 and Nixie tubes. Based on the past experiences of hundreds of sold kits and the wishes from our customers, the software was radically re-written and is now backed with a lot of new features. Also an „ultra cool“ HV converter design was introduced, which minimizes the heat created by the inductor / switching transistor to a maximum of only 30°C. This results in highest efficiency > 90% and the possibility to power the clocks from a single USB source. In the same way the radiated EMI noise was dramatically reduced.
All enclosures are made with solid black anodized aluminum profiles from Fischerelektronik,
Lena offers a transparent top cover to have a look at the internal electronics and RGB LED lighting.

Features List of all clock kits

  • Hours, Minutes and Seconds display
  • 3 x 2 multiplex for less tube noise and higher brightness; based on a modern Supertex HV driver
  • Selectable 12 or 24 hour display modes
  • Uses a Quartz Crystal Oscillator as the timebase with software adjustable accuracy
  • 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 or selectable with a single button push
  • Scrolling display during fading-in the date or standard display change
  • Alarm with programmable snooze period
  • Optional DCF / WWVB / MSF / GPS sync. with status LED; prepared for fitting the ASK receiver module from the „Wireless GPS connection“
  • Dedicated DST button for easy switching between DST and standard time
  • Super Capacitor backup keeps time during power outages for more than 24 hours.
  • Simple time setting using two buttons
  • Five programmable column LED settings (Flashing AM/PM indication, illuminated AM/PM indication, always flashing, always on, always off)
  • Seconds can be reset to zero to precisely the set time
  • Programmable night mode - blanked or dimmed display to save tubes life or prevent sleep disturbance
  • Rear Indicator LEDs dim at night to prevent sleep disturbance
  • Weekday aware „Master Blank“ function to turn off all displays on weekends or during working hours
  • Separate modes for column LEDs during night mode
  • Standard, fading or fading + scrollback display modes as an eye-catcher
  • „Slot Machine“ cathode poisoning prevention routine, disabled during night mode, selectable time
  • Programmable RGB tube lighting – select your favourite colour palette
  • 729 colours possible. Have a different colour of your choice every hour or autochanging colours with variable speed
  • High efficiency „ultra cool“ HV converter, power consumption less than 2.5 VA even when RGB lighting is fully turned on.
  • Powered from a single Mini USB outlet (from your PC, MP3- or a cellphone charger)
  • All user preferences stored in non-volatile memory

Fully inclusive kits with shown enclosures

You'll get everything (except of the tubes, which are sold seperately) to build the clock incl. enclosure
All tiny SMT parts on the boards are just pre-assembled and soldered so assembling the complete clock within 2 hrs. is not a problem at all.

However, you need very good soldering and mechanical skills and a quality electronic solder station
with a fine tip (1 mm maximum) and fine solder wire to assemble the clock.

This means also, that these kits are not for electronic beginners.
Beware also from the internal produced 160VDC Anode drive high voltage.

SMT pre-assembled main board for all clocks
You need only to fit the through hole components.


Laura's Video Review

Watch here a video review from Brian Stuckey on www.tubeclock.db



Fine blue rubber surrounding for a safe stand on the table

All alumnium housing

Coppery coloured engraved front- and rear cover


Solid aluminum U profiles

Transparent Plexiglas top cover

Coppery coloured engraved front- and rear cover

Technical Data

Dimensions Lars   w x h x d (without tubes): 117 x 33 x 90 mm (4.6" x 1.2" x 3.5")
Dimensions Lena  w x h x d (without tubes): 135 x 40 x 90 mm (5.3" x 1.6" x 3.5")

Weight Lars:   240 gr (0.53 lbs)
Weight Lena:  290 gr (0.64 lbs)

Power Supply: 5VDC 450mA max. from USB supply

1/8" TRS input for:
External optional RTF receiver (DCF/WWVB or MSF)
External optional BR-355 wired GPS receiver
External antenna (when ASK receiver module fitted) for Wireless GPS Connection

LEDs on rear:
Alarm, DST, Sync and Time Data

LEDs on front:
2 x 2 column 1.8mm LEDs amber coloured (Lena 2 x 3mm LEDs)

Download Owners Manual
Download Assembly Manual

Lars / Lena / Laura Nixie Clock kit
Power Supply
Optionale Funkempfänger *
Optional RTF Receivers *
Please don't forget to add the additional shipping costs for deliveries outside Germany

Ihr Warenkorb
Your basket
* Alle Funkempfänger sind incl. 2,5 m Anschlusskabel (außer das ASK-Modul und das Wireless GPS Set 3)
Set 3 besteht aus 1 x Drahtloses GPS-Sende-Modul, USB Netzteil mit EU Netzadapter für den Drahtlos-Sender, Internes ASK Empfängermodul für den Einbau in die Nixieuhr

* All RTF Receivers includes a 2.5 m TRS connection cable (except the ASK-module and the Wireless GPS Set 3)
Set 3 includes: 1 x Wireless Transmitter Module, USB Power Supply with US mains adapter for Transmitter module, Internal ASK Receiver Module for fitting inside the Nixie clock

What is the Wireless GPS Set 3 ?

Import duties, taxes and charges are not included in the item price or shipping charges.
These charges are the buyer's responsibility

Die angegebenen Preise sind Bruttopreise incl. MwSt. und zzgl. im Warenkorb genannte Versandkosten.

Noch Fragen / Any questions: