Their earliest draft of an ESP32 module, called the ESP3212, has been scrapped and replaced with the ESP-32S, with a pinout that’s identical to Espressif’s WROOM32, according to [Angus Gratton ...

We can see that the larger antenna footprint will require some thought in PCB design, but otherwise the module has the same pinout as the existing WROVER.

An undocumented set of low-level commands has been discovered in the ESP32 microchip, a widely used component in IoT devices. Manufactured by the Chinese company Espressif, the ...