ESP32-LyraT-Mini is a lightweight audio development board based on ESP32-WROVER-B, which implements AEC, AGC, NS WWE (wake word engine) and other audio signal processing technologies.
The audio codec chip, ES8311, is a low power mono audio codec. It consists of 1-channel ADC, 1-channel DAC, low noise pre-amplifier, headphone driver, digital sound effects, analog mixing and gain functions. It is interfaced with ESP32-WROVER-B Module over I2S and I2C buses to provide audio processing in hardware independently from the audio application.
Output socket to connect headphones with a 3.5 mm stereo jack. (Please note that the board outputs a mono signal)
Output socket to connect 4 ohm speaker. The pins have a standard 2.54 mm / 0.1” pitch.
Functions as the communication interface between a PC and the ESP32.
USB Power Port
Provides the power supply for the board.
Standby / Charging LEDs
The Standby green LED indicates that power has been applied to the USB Power Port. The Charging red LED indicates that a battery connected to the Battery Socket is being charged.
Power On Switch
Power on/off knob: toggling it to the top powers the board on; toggling it to the down powers the board off.
Power On LED
Red LED indicating that Power On Switch is turned on.
The ESP32-WROVER-B module contains ESP32 chip to provide Wi-Fi / BT connectivity and data processing power as well as integrates 32 Mbit SPI flash and 64 Mbit PSRAM for flexible data storage.
All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.