The "Dyadnix" Two Tube Nixie Clock kit

(Released December 2010)

Introduction

This is my third clock kit design. It has two Russian IN-14 Nixie tubes to display Time, Date and Temperature.

As it shows each pair of digits, the base of the tubes illuminate with any one of 7 colours, e.g. Blue for Hours, Green for Minutes.

There are many configuration options so you can adjust the display to how you like it.

It also has effects such as "slot machine" digits and even some LED effects that run when the tubes are turned off.

This design has two boards which plug-together to keep it compact without needing any tiny "surface-mount" parts.

Features (New firmware v2 released September 2011)

The core of the clock is a Microchip PIC18F1330 8-bit CMOS microcontroller IC. (It is programmed entirely in assembly language code for high performance).
Timekeeping by watch crystal or 50/60Hz mains frequency with up to 12 hours "Supercap" backup. (The timekeeping accuracy can be finely adjusted in the clock software.)
All clock option settings are easily adjusted using two push-buttons and are retained in the controller non-volatile memory during power-off.
The clock is very configurable with over 50 user settings.
Time, Date and Temperature digit effects.
12 or 24 hour mode time display with am/pm indication.
Gently fading digits options.
Automatic DST (Daylight Saving Time) rule presets for UK,Europe,US,Australia,New Zealand & Mexico. + custom settings for other locations or future rule changes.
Configurable multi-colour Tube LEDs to indicate which information is being shown and other effects
Display brightness can be automatically dimmed or turned-off between set hours or by light sensor, ideal for night time use.
Manual tubes toggle on/off facility can overide the automatic timed or light sensor modes.
Interesting LED effects for when the tubes are turned-off.
Adjustable LED brightness and colour.
UK/US Date display options and automatic leap year compensation.
Temperature in °C or °F using a DS18B20 digital sensor with fine accuracy adjustment.
Special Thermometer mode to constantly show the temperature.
Maximum/ Minimum temperature display.
Can be configured to continually show just the date (calendar mode)
Digit Cycling effects can be configured to run at various intervals.
Random effects selection.
Low power consumption from a 9 - 12 Volts AC or DC adaptor (Not Included).
The High Voltage (HV) converter shuts-down to save power if the tubes are turned-off. (When in timed or light-controlled tubes off modes).
Protected by a fast-blow fuse and software HV monitoring with overload shutdown.
Auto diagnostics for the HV soft-startup with problem indication by LEDs.
Compact design with no tiny surface-mount parts.
Configuration can be easily reset back to defaults if you wish.

Specifications

Power supply adapter requirements:

A 9 - 12 Volts AC or DC power adapter (wall-wart) rated at 300-500mA is required

Power consumption:

Approx 2 Watts with both tubes and LEDs on.
0.2 Watts with all tubes, LEDS and HV off.

Dimensions:

PCB only - 64mm X 45mm X 1.6mm (2.52" X 1.77" X 0.06")
Height (including tubes) Approx 76mm (3")

Timekeeping Accuracy:

(Un-adjusted crystal accuracy ± 1.7 seconds per day)
Timekeeping fine-adjustment in software or mains frequency sync.

Temperature Display:

0 - 125°C (the unadjusted accuracy is ± 0.5°C between 0 - 85°C )
The displayable Fahrenheit range is 32 -199°F

Weight: (no case):

Approx 76 Grams (2.7oz)

Documentation

All Manuals are provided on a CD supplied with the kit.

You can download the preview version of the Assembly Manual in Adobe PDF format (0.6Mb compressed for web download)

(It also shows the tools you will need to successfully build the clock).

**** This kit is suitable for people who have good soldering skills ****
If you have never built an electronic kit - please use one of the many web-based soldering tutorials that are available and practice before attempting this project.

Price List: in GB Pounds Sterling (GBP). (Secure payment can be made via "PayPal")

Standard Kit (Excludes AC power adapter )	£44.99
UK mainland delivery (First Class)	£1.99
Europe delivery (Standard Airmail)	£2.99
USA and rest of world delivery (Standard Airmail)	£4.29
(Optional) - UK customers only - UK type AC Power adaptor	£2.99

The clock requires a 9 - 12V AC or DC rated @300-500mA power adapter(wall wart) with a standard 2.1mm plug.
You should be able to purchase an inexpensive adapter locally

The Standard kit includes two tested "IN-14" Russian Nixie Tubes.
It does NOT include the AC power adapter(wall wart) or Case and is NOT available Pre-Assembled.

Sales/Contact: Please email me to arrange purchase via a secure transaction using "PayPal" or request further information.
You can also purchase the kit from me via eBay

Kit Availability - Now Available

This page was last updated Sunday 6th of November 2011