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The Anita desktop clock

The Anita Clock is an unique single-digit desktop clock DIY kit which displays time in sequences, 10's hours, 1's hours, 10's mins and 1's mins and is made with single LED segments on a PCB which forms together a 7-segment display with 8 inch (20 cm) height. So far, clock kits for such big displays are not yet available on the market, especially as an optical highlight the display board looks "translucent" so the digit seems to be detached in the enviroment. So you'll get an unique piece of jewelery which also serves to "de-celerate" the everyday pace of life hectic as the time can not be read just with a glance.

But how can the clock display the time with only a single digit?

The clock displays the time in a sequence of four digits, each with a small pause between the individual numeral and a longer pause at the end of the sequence. It's really intuitive, and once you have understand the sequence, reading the time is very easy.

Mr.Nixie's "Power-Tank"

The Anita Clock is equipped with a new generation of 1 Farad super capacitors featuring an extremely low internal resistance of less than 1 ohm, making them ideal for smoothing or filtering current peaks; a so called "Power-Tank".
As the maximum current consumption of the display, when green and blue coloured segments are used and all segments are turned on, is up to 1 A, the use of such a capacitor type was intendend. The fact, that the numeral never remains continuously turned on, the capacitor is able to buffer the short-term (for a normal USB port) very high power requirements and thus ensure a more uniform load across the USB power source.

Anita Clock red / Amazon Echo 2nd Generation / Anita Clock blue

The red Anita Clock is synced by PVelectronic's XTERNA Outdoor Time / Temperature Transmitter.
Actual time is 18:08 in the video.


  • Displays hours and minutes in a sequence
  • Selectable 12 or 24 hour display modes
  • Automatic brightness control
  • Uses a Quartz Crystal Oscillator as timebase with software adjustable accuracy
  • Simple time setting using two buttons
  • Seconds can be reset to zero to precisely set the time
  • Optional GPS / NWTS sync. with status LED; prepared for fitting the ASK receiver module from the „Wireless Set“
  • Dedicated DST button for easy switching between DST and standard time
  • Backups time during short power outages
  • Mr.Nixie's "Power-Tank" reservoir to prevent peaks on the USB power supply
  • Programmable night mode: Display is turned off
  • Standard or fading display modes as an eye-catcher
  • All user preferences stored in non-volatile memory
  • SMT parts on display board are just assembled and soldered
  • True constant current drive of the display segment with seven boost converters for max. efficiency
  • No high voltage on the boards present

  • Dimensions: 125 x 125 x 225 mm
  • Weight: ca. 450 g
  • DC input: 5V Mini-USB

What you'll need:

  • 3 hour of your evening time with no hurry
  • A clear, well-lit area in which to work
  • Soldering station and fine electronic solder
  • Multimeter to check the generated voltages
  • Electronic tools
  • A loupe may be helpful
  • TX10 (Torx) screwdriver
  • Download of the manual
  • Enjoyment of your work of course
  • USB power supply

RFT receivers

NTP receiver
The modern art of time keeping:
Via Internet and a domestic Wi-Fi the time data will be received from a "timeserver-pool", converted into a pseudo GPS format and interpreted by the clock.
  • Easy placement
  • The NTP must be able to connect to a 2,4 GHz Wi-Fi network
  • Only onetime configuration through Laptop / Tab or Mobile Phone with the web browser
  • No software or App installation necessary
  • World time (UTC) is transmitted, which means that the clocks have to be configured once for the corresponding time zone and need to be set between DST and Non-DST twice a year by pressing a button
  • Can be used worldwide


Wireless GPS
The wireless way of time keeping, specially with multiple clocks:
The data sent by the GPS satellite system is received (similar to the car's navigation system) and converted into a 433 MHz signal, then transmitted intermittently and received from an internal fitted ASK module.
  • Placement the Wireless transmitter on a window frame with a clear view to the horizont is required
  • Wall outlet for powering the Wireless transmitter necessary
  • 433 MHz signal strenght up to 20 m indoor
  • Every clock must be equipped with an internal ASK module
  • One Wireless transmitter can be received by any number of clocks
  • World time (UTC) is transmitted, which means that the clocks have to be configured once for the corresponding time zone and need to be set between DST and Non-DST twice a year by pressing a button
  • Can be used worldwide, but specially intended for Export, therefore the manual is only available in english speech
These wireless components consist of the following devices
1.: A wireless GPS receiver with USB power supply for placement on a window frame.
2.: An ASK module for fitting into the clock.

If you want to use Wireless GPS synchronization for the first time, we recommend to order a Wireless Set 3 as all necessary components are already included. Later, to expand to every new clock, you only need an internal ASK module.


Look at RFT Receivers

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