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ai thinker board - status #52

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lorenz-g opened this issue Jan 1, 2021 · 0 comments
Open

ai thinker board - status #52

lorenz-g opened this issue Jan 1, 2021 · 0 comments

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@lorenz-g
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lorenz-g commented Jan 1, 2021

Hi, thanks a lot for assembling all the info about the ai thinker board in this repo.

Do you by any chance know the hardware status of the ai thinker board?
I checked on seeedstudio and they don't sell it any more. It is still available on Aliexpress, but I was wondering if you know if there might be a second version of the board under development?

I think the form factor is really great, but the pins used on the breakout could be improved a bit, e.g:

  • not exposing the io4 flash pin
  • not exposing the gpio16 which is connected to the psram
  • not exposing gpio2, 14, 15 which use the sd card
  • only using 2 instead of 3 gnd pins
  • not exposing gpio12 as it is also the mtdi pin which can cause trouble during boots
  • instead expose other gpio that are not used by any other service on the board (Andreas Spiess has a great google sheet of esp32 "safe" pins)

I think everybody that tried to use the camere, use the sd, have one extra UART and one extra I2C connected to the board knows the frustration with the breakout pins they chose.

Not sure if this is the best place to ask, but maybe somebody can point me in the right direction.

P.S. Is the pcb layout file of the ai thinker available online? I could not find it in your repo, so I guess not.

I have developed a pcb component for the board to be able to easily build other pcbs around the camera and uploaded it to snapeda. It is here https://www.snapeda.com/parts/ESP32-CAM/AI-Thinker/view-part/ (there still seems to be a bug as the tkeepout our tplace layer is rotated in the snapeda layer, but it shows ok with my pcb program).

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