There are four types of display devices: the old-fashioned Nixie tube, which uses a generic/common design and displays the digits 0-9 (plus colon and period in this design), a Decatron tube similar to ETL/Baird Atomic GC10B, which displays its value by lighting up batches of "pins" on its face, an "alphanumeric" Nixie-like tube using a 14+1 segment display similar to the Burroughs B-7971 tube, and a Numitron design similar RCA DR-2115 (but using a 7+2 segment display with period and colon).
Place one, right-click it to set a channel, hook up some Digilines wires and a Lua Controller or so, and send the symbol you want it to display as a Digilines message. Decatron tubes can also be wall-mounted. A stripe indicates the "1" position on those.
The classic Nixies and the Numitrons respond to the numbers 0-9 and the words "colon", "period", and "off", while the alphanumeric Nixies will respond to the entire ASCII character set (32-127), the above three control words, plus "del", "allon", and "cursor".
Decatron tubes respond to 0-9 and "off" to directly set their states, "inc" and "dec" to bump the value up or down, "get" to read the current value back into your LuaController program, and they'll send "carry" or "borrow" as a message if the count overflows or underflows.
See the README for more details.
These tubes emit a small amount of light when displaying something.
Since these are meant to be driven by Digilines signals, only the "off" ones for all four types appear in the Creative Inventory. Use /giveme to get the others if you're not using Digilines (this is how the two middle Nixie screenshots were created). Node names are of the form "nixie_tubes:tube_{0..9, 'colon', 'period'}" for classic ones, "nixie_tubes:alnum_{ASCII char code}" for the alphanumeric ones, or "nixie_tubes:decatron_{0..9}" for the Decatrons.
No crafting recipes have been made for the Decatron yet.
Depends: Default minetest_game stuff, a recent Minetest engine, mesecons, and digilines
License: LGPL for the code, WTFPL for textures, models, and whatever else.
Download: https://github.com/VanessaE/nixie_tubes ... master.zip
...or browse the code: https://github.com/VanessaE/nixie_tubes
Crafting
Screenshots:
Example Lua Controller code: