One could make an array of thermopiles, like the hacker that made their own imager out of discrete diodes (digiOBSCURA) . But each pixel would cost $7.
One might be able to make an array of thermistors (possibly with active cooling using a peltier) like the diycamera (digiOBSCURA) below. Might be an application of combining many RC oscillators in a tree and recovering the signal with an FFT. I have a gut feeling this is possible, but haven't show it. Isn't this the same as or similar to your keyboard multiplexer design?
Above is a seminar on analog layout designed to target Tiny Tapeout that went over Magic (by Jonathan Edwards) and Klayout (Thomas Perry). Sky130 and tinytapeout can do analog, but most of the tools and the examples are digital based.
Lol, I messed that up, Timothy Edwards is the creator of Magic. Not sure where I got Jonathan, Ousterhout? I am aware of subtext, would be good for our LLM future.
With Tiny Tapeout the levels of inception increase, we must go deeper and you get 8 bits in and 8 out and the designs are daisy chained. Purely for experimentation. 1000 logic cells or whatever else you can fit in the space.
https://github.com/google/skywater-pdk
One could make an array of thermopiles, like the hacker that made their own imager out of discrete diodes (digiOBSCURA) . But each pixel would cost $7.
https://www.digikey.com/en/products/detail/excelitas-technol...
One might be able to make an array of thermistors (possibly with active cooling using a peltier) like the diycamera (digiOBSCURA) below. Might be an application of combining many RC oscillators in a tree and recovering the signal with an FFT. I have a gut feeling this is possible, but haven't show it. Isn't this the same as or similar to your keyboard multiplexer design?
https://www.digikey.com/en/products/detail/panasonic-electro...
https://github.com/IdleHandsProject/diycamera (digiOBSCURA)
One could experiment with microbolometers on tinytapeout. https://elicit.org/search?q=cmos+microbolometer
https://tinytapeout.com/