Just last week, we wrote about Espressif ESP-ADF Audio development framework that can be used to develop smart speakers and other audio applications with ESP32 boards.

There was only one board with documentation at the time however: ESP32-Lyra-T. One tiny problem: it was not for sale just yet, but today Olimex has announced the board is in stock, selling it for 22 Euros.

Main features:

Wireless module – ESP32-WROVER module with WiFi and Bluetooth LE

Audio Many audio inputs – Wi-Fi, BT-audio, DLNA, 3.5mm audio Line-in 3.5mm headphone jack 2x microphones Speaker connectors

Storage – micro SD slot

Debugging – JTGA header, USB UART

Misc – Touch sense buttons, function/boot/reset keys, DIP switch for configuration

Power – 5V via micro USB port; battery header + charger chip

You’ll find documentation on Espressif website (user guide) as well as on Github’s ESP-ADF (getting started guide).