ESP32-LyraT Speech Recognition Board Sold for 22 Euros

Orange Pi Development Boards

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.

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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).

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cnxsoftJon Smirlcrashoverride Recent comment authors
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“Display – LCD connector”
“Camera – Camera connector”

Neither of these appear to be present on the board.


Those are SPI connected, so you would change the mode of the JTAG connector. This is a tiny $1 SOC, it does not have full blown camera and LCD support.

If you want a video capable camera and display this is not the right chip for you.