2 layers100 × 66.1 mm

PicoWiFiModem
mecparts/PicoWiFiModem
A Pico W based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators
39 parts64GPL-3.0
KiCad boards from 1 GitHub repository tagged “hayes”, the most starred first; open any of them in PCBKit.

mecparts/PicoWiFiModem
A Pico W based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators