alt Hacker NewsInteresting. Thanks for sharing.
I have a question, hope it's not too sensitive, how do you guy protect your secret waveform ? One with enough tool and determination can just measure voltage at pixel and reverse the whole thing, the chinese can do that in less than a week i bet.
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I always wondered about this as well. Linux regularly gains reverse engineered drivers and it seems like the same would apply. I guess this is probably how the hobbyist projects that drive the panels faster came about? I assume it's the same as the NDAs surrounding SoCs where the entire exercise seemingly only exists to spite the general public while serving no practical purpose. (Well I suppose pandering to nontechnical management's insecurities is a sort of practical purpose but anyway.)
But I was too lazy and/or uninterested to attempt low level tinkering with e-paper myself and these days you can finally purchase some reasonably(ish) fast panels off the shelf.
Few years ago I did an educational project to extract waveforms from logic capture - it was doable [1]. But this approach may have limits on newer faster FPGA based controllers.
[1]: https://github.com/prashnts/betty-epd/blob/master/notebooks/...