• Hours, Minutes and Seconds display.
• 12 or 24 hour modes.
• Date display in DD.MM.YY or MM.DD.YY Format.
• Alarm clock feature with programmable snooze (6,9,12 or 15 minutes).
• Programmable auto display of date at end of minute.
• Programmable Blue LED backlighting. Can follow night blanking.
• Uses a Crystal Oscillator as the timebase.
• Supercapacitor time backup for short power interruptions.
• Simple time setting using two buttons.
• Programmable leading zero blanking.
• Calendar function has full leap year calculation up to 2099.
• Five programmable neon colon settings (Flashing AM/PM indication, illuminated AM/PM indication, both flashing, both on, both off).
• Maintains time during setup mode, eg. When changing between Standard Time and Daylight Savings Time.
• Seconds can be reset to zero to precisely set the time.
• Programmable night time mode - tubes blanked or dimmed to extend tube life / prevent sleep. disturbance.
• Separate modes for colon neons during night time mode.
• Fading digit mode or standard change of digits.
• 'Slot Machine' cathode poisoning prevention routine.
• All user preferences stored to non-volatile flash memory.
• Useful tube-test routine on cold startup.
• Night mode override with 1 button press. Customisable override period.
• LED backlights can be permanently disabled in software if you prefer, or not installed.
• All through-hole components. No difficult surface mount components.
• TUBES NOT INCLUDED.
• Download user guide and instructions from our kit instructions link on the left of this page

All electronic components are provided, except power supply and tubes. PCB support spacers are not included. 


All transistors, resistors, capacitors, ICs, diodes 
2 X Neon bulbs for hours:minutes:seconds separators
Double sided, plated - through - hole PCB with green solder resist.
Fully pre-programmed PIC microcontroller, with socket
6 X blue LEDs for tube backlights
Piezo alarm sounder



Uses 12V DC power supply (minimum 250 mA) This is not supplied - It is more economical for the buyer to buy a suitable adapter locally, suitable for local power outlet type. Full details of the power supply are provided in the comprehensive documentation, and it is very easy to obtain cheaply.