This looks like a viable competitor to the recently announced HA Voice Preview hardware. Looks like it’s sold out at this point but there will be more coming. More microphones, presence detection and a builtin amplifier to run fairly substantial speakers.
https://futureproofhomes.net/?utm_source=youtube&utm_medium=product_shelf
Ah, that wasn’t super clear to me. So GPIO hate on an ESP32 carrier makes more sense. Since mmwave is directional, the sensor placement on this was confusing as hell to use as an RPi hat, but 🤷