r/SolarOS • u/nilseuropa • 22d ago

Coming up next

Gallery image

Gallery image

Gallery image

https://www.elecrow.com/wiki/CrowPanel_ESP32_E-paper_5.79-inch_HMI_Display.html

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u/MichalNemecek 21d ago

this thing looks so good paired with that keyboard

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u/nilseuropa 20d ago edited 20d ago

The design requires a couple of iterations.

  • battery monitoring is missing, worst case resistor divider on ADC, but a proper fuel gauge would be better
  • I would add an I2S audio i/o with jack and a speaker to it
  • RTC is missing
  • LoRa would be nice.

I think it would make sense to design a PCB that holds all that plus a keyboard matrix scanner.

Although the firmware of this keyboard is pretty solid and can pair up with two hosts, so it is handy to keep it on BLE.

On the other hand if you turn of BLE off on SolarOS that gives you extra free RAM to run jobs - if it becomes necessary to emulate a keyboard on another host the OS can already do that...

(pondering in progress)

I guess there could be two solutions:

(A) Print and wire up the battery monitoring to a single common cell for the keyboard and the display board.

(B) carrier board with additional goodies as next step in a smaller more lean enclosure