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Published on May 22, 2013
An Etch A Sketch I made using hard coded logic and led grid. No microprocessor or software involved. Using two pots, 4 bit adcs, 2 of 1 data selectors, inverted, JK flip flop, 555 timers, 4 bit binary counters, 256bit static ram, binary 1 of 16 decoders, comparators(op-amps used as logic level converteres).
There is no schematic available since one was never made however if someone wants me to make one I can do so for a premium.
I do want to make a bigger 3 bit RGB version(something like 32x32 or bigger) with color selector but it would cost a lot so if anyone wants to provide funds for that project it would be much appreciated.