In case anyone is still interested, there is some work in progress to make
the project (IN-16 and IN-17 versions) available on github.
The original project was not suitable for sharing for various reasons. I’
currently assembling two new calculators to test the changes I have made to
improve the project:
- Smaller and simpler controller board with easy to solder parts. A hot air
gun is no longer needed. Also, the HV part has been removed, so now you can
use your favorite HV PSU (assuming it fits in the case and provides enough
current for 14 nixies).
- The keyboard circuit has been redesigned using a classic matrix with an
ATmega328p instead of the HT16K33. It is now easier to detect simultaneous
keystrokes, so more levels of functions can be added to the keyboard
- The display boards have been completely redesigned to use socket boards
for the nixies. That should fix the biggest issue with the old design. It’s
now a lot easier to replace a broken tube
(see the only document I have uploaded so far, so you can get a
first impression)
- Major firmware changes in progress. All the settings can now be adjusted
using the keyboard, a network connection is no longer needed. Actually, I
will completely remove the network code.
If everything works as expected, I hope I will have the project ready to
share by end of June.
https://github.com/axtar/14-digits-nixie-calculator
newxito schrieb am Montag, 1. März 2021 um 23:14:21 UTC+1:
> I’m cleaning up the firmware of the calculator and I have moved the code
> for the calculations to a small separate library.
> Actually, I would like to learn how to build unit tests and that’s the
> ideal type of library to start with.
> But I quickly found out that this is boring and not fun… so, no unit
> tests...
> If someone is interested, here is the link :
> https://github.com/axtar/NixieCalc
>
>
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