The Sailor Hat is based around a standard ESP32-WROOM-32 module ... All of the ESP32 GPIO pins are terminated on a GPIO header, with jumper options to disable terminations to the standard ...
We’ve looked at the WROOM-DA module before. It’s an ESP32 with two antennas, and [Andreas Spiess] says it is the ugliest ESP32 he’s ever seen. But beauty is only skin deep, after all.
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