pico-usb-wifi is a project hosted on GitLab that provides a USB Wi-Fi adapter solution for Raspberry Pi Pico devices. The project includes firmware and software components to enable wireless connectivity.

A team at a hackathon in Vilnius integrated a Raspberry Pi into an old rotary phone, allowing it to communicate with a server via a websocket connection. This setup enabled two-way audio, control of the bell ringer with custom audio patterns, and operation of the hangup switch.

ESP32-S31 features a dual-core RISC-V architecture and supports both wireless and wired connectivity. It includes 2.4 GHz Wi-Fi 6, IEEE 802.15.4 for Thread and Zigbee, and Bluetooth 5.4 for LE Audio, Direction Finding, and Bluetooth Mesh 1.1.