NixieStix Library

By stephan.com shamelessly stolen from McOrts/M5StickC_Nixie_tube_Clock

This library allows for the display of integers in the style of a Nixie tube. It is designed to work only with the wonderful M5StickC ESP32 protyping system, which includes a screen, buttons, wifi, bluetooth, accelerometer and more for around $10. It's small enough to be worn as a wristwatch.

Documentation

Simply include the library with

#include "NixieStix.h"

and you may now include a sequence of Nixie tubes your application by declaring it like so:

NixieStix <[tubetype], [digits]> [varname]([xstart],[ypos],[space]);

Where tubetype is either SmallNixie (18x34) or BigNixie (35x67), digits is the number of digits in the set, xstart and ypos are where to begin drawing, and space is how many pixels to leave between digits. For example, to get a long counter - big enough to fill the M5StickC screen horizontally - you might use:

NixieStix <SmallNixie, 8> Counter(1, 23, 2);

Which creates an 8 digit string of small tubes, which starts drawing at (1,23) with a 2-pixel space between tubes.

Then, elsewhere in your code, you would do:

Counter.draw(12345);

and the tubes would show "00012345"

You may also use tubes individually, or create your own sets by inheriting from the NixieTube class. This could be generalized to work with any display of image-based digits.

Dependencies

• M5StickC

Update the Nixie Tube Images

McOrts original repo includes the lcd-image-converter.exe program used to convert the images - I don't want to steal his thunder from having done the hard work of this, I just refactored it into a handy library. If you're interested, I'd recommend starting there, which also contains further instructions on getting things running for the M5StickC.

Future expansion

• todo "blank" tube
• todo "negative" tube for signed integers
• todo support TTGO or other platforms