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It is planned to switch to a custom ESP32-based printed circuit board
(PCB). This has the advantage that the ESP32 modules contain a lot of
basic functionality and the complete network interface. This should be
the minimal viable product (MVP).
The esp32s2_devkitm is a development board to develop the firmware
before even designing the MVP PCB. Since this board is not supported
officially a patched Zephyr kernel close to v3.7.0 is used. The patch is
a slight modification of the officially supported esp32s2_devkitc board.
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