I'm thinking of making an Ice Tube Clock but I've run into difficuilties sourcing the MAX6921 VFD driver IC.
Then I came across this in the design notes: "We could use high voltage transistors and use those as buffers but that would take a lot of space"
In fact, someone has a similar design using the same tube but which uses transistors (http://web.jfet.org/inGrid/
Now I don't really care about space filled with a lot of transistors if it means that the thing would actually work without trying to get an elusive MAX6921 - although that may actually happen if I'm lucky... but I'm not going to count on it so I'm looking at alternatives.
What kind of changes would have to be done to the design of the Ice Tube Clock to use transistors instead of a MAX6921? Can anyone help me on this? How easy would it be?