Model: ESP32-WROOM-32E
WiFi: 802.11b/g/n
ESP32 is a development module sold by Espressif. They are pretty cheap, have Wi-Fi and Bluetooth and can be used for stuff like sensors or tiny computers running simple stuff.

The builtin DAC outputs to GPIO25 (Channel 1) and GPIO26 (Channel 2). It is pretty low quality, 8-bit.

See https://techoverflow.net/2021/11/19/how-to-use-esp32-as-usb-to-uart-converter-in-platformio/

• ESP32-WROOM-32E data sheet
• ESP32-WROOM-32 pinout

• ESP32 Dev guide → quickstart on esp-idf
• Bare metal ESP32 programming → going deeper without the esp-idf

https://github.com/geo-tp/ESP32-Bus-Pirate protocol sniffer over GPIO

• http://www.tilde.club/~bokfink/esp32-bluetooth-audio-streamer.html → Bluetooth streamer guide
• https://github.com/espressif/esp-usb-bridge → serial USB bridge