[agys]

For a personal project I also tried to have a custom segmented display produced… It was an amazing journey!

The PCB is being updated for a new ultra low power MCU (vs the current ESP32).

The only online document is this brief clip where it appears a few seconds in the very beginning:

https://twitter.com/andreasgysin/status/1525544668808749060

[mananaysiempre]

There’s also been a series at EEVblog on getting a custom LCD manufactured[1]. (Not that expensive, surprisingly—if you’ve got the expertise.)

[1] https://www.youtube.com/watch?v=ZA5vlDdpbkw

[yonatan8070]

For those who don't have the time to watch the video, how much is "not expensive"?

[mananaysiempre]

It’s more or less in the video title in this case (“$100 Custom LCD Design”) :) but he in the video itself he says it was $138 for five prototypes. Does not exactly fill me with joy, but even prototypes of CNC parts are usually an order of magnitude more expensive, from what I can see. Simple custom PCBs (which you can have for an order of magnitude less) are an outlier in this respect.

(Like the guy or not, but he’s not the filler type of YouTuber, not even from the enjoyable-filler variety. The LCD videos in particular may not rise to the level of a lecture series exactly, but they’re not far away from it, either.)

[agys]

This was exactly my starting reference for the project…!

[pxx]

The esp32 has a low power coprocessor; have you considered keeping the main processor off most of the time and utilizing the coprocessor for more logic? The tooling is kind of bad for the base model but it gets better with the more modern variants.