The Temp’n’Glow nixie tube thermometer got a bit of an update in the last few days. Claus-Dieter Urbach and Dieter Wächter have just released a nice enclosure for their thermometer kit. The device uses a Dallas DS18S20 sensor on lengths of wire between 1 and 10 meters. It supports up to two sensors so you can use measure both indoor and outdoor temperature at the same time. The update frequency and error detection settings are user adjustable. Lastly, to prevent cathode poisoning, the device cycles though the digits in a slot machine like effect to help lengthen the life of the IN-16s.
Kenneth Finnegan sent me a link to a project that he has been working on - it is an AVR based IN-16 nixie tube thermometer. It appears to be a pretty straightforward design and what I really appreciate about this is that he does a great job documenting his build and sharing code samples with readers. I've included the part list below so you can get an idea of what is involved but be sure to check out his website for more details, schematics, and photos!
Okay - this might not be the most practical use of nixie technology but it is cool. They are attendance badges based off on IN-16 tubes and powered by only two AA batteries which provide a shocking 40 hours of life. Be sure to check out the links below for much more information.
Jürgen had been hard at work designing a new non-nixie gadget - a thermometer based on an IN-9 bar graph tube. This thing is cool. Not only is it a clean design, it is a fully analog device.
The six LEDs are simple connected in series with the tube. Every LED has also a parallel 100µF capacitor (these RGB LEDs uses their own PWM controller and connecting them in series is only possible with such a capacitor in parallel to every LED).
And one more feature I really like: it is USB powered. I can't wait for for this to go on sale. Check out the video:
(video by Jürgen Grau)
Thanks for sharing, Jürgen!
Konstantin from Kosbo.com has a new board for IN-18 and IN-14 nixie tubes for sale on eBay. It is the diameter of a tube and includes the high voltage transistors and resistors needed in one nice package. For 2.99 GBP, it is a pretty good deal.
(images and text used with permission)
Okay, we're a little late in covering this one; Hack A Day and Engadget beat us to it. This is a 81-Nixie tube based Sudoku board which appears to use IN-12's (based on the upside down 2 used as a 5.) There are two knobs on the board, one controls the x position and the other controls the y position of the cursor. The number pad controls the actual value of the input. Be sure to visit the site - he graciously includes the source code and schematics.