While most of us think of Arduino boards as something to be programmed by a computer, there’s really nothing that says you can’t use an Arduino-style microcontroller as one. It could be argued that the Arduino is already a computer, but in the case of the DemUino, a small display is embedded into an old PS/2 keyboard. It might not be what a person is used to, but someone not familiar with what a “microcontroller” is would more readily, on some level, recognize this as a computer.
The software configuration is quite involved, including the author, “DemeterArt,” writing his own BASIC language. This “only” took around 2200 lines of code. The wiring also looks quite involved from the diagram provided.
Wow, a lot of work. Check out the demonstration below.
As noted by the original source, “The project had to be a minimum-cost-endeavor given the abundance of junk lying around in my home lab and my financial situation.” This sounds like the introduction to many interesting projects. If one had enough money, he or she might just boringly buy another toy to play with.
Personally, if I had an extremely abundant amount of money, I’d be tempted to hire my own staff of engineers and technicians to build more of the ideas that I come up with than I’m able to make myself!