That said, [g3gg0] decided early on that the design would use as many SMD components as possible ... To run the show, [g3gg0] selected the ESP32-PICO-D4. You certainly don’t need such a powerful ...

While the board is admittedly tight, I still think they could have tucked in a side-mounted SMD momentary button ... of the limited PCB space is the ESP32’s onboard antenna — best practice ...