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1.1 ESP32-LyraT V4.3 Getting Started Guide
This guide provides users with functional descriptions, configuration options for ESP32-LyraT V4.3 audio develop-
ment board, as well as how to get started with the ESP32-LyraT board. Check section Other Versions of LyraT, if you
have different version of this board.
The ESP32-LyraT is a hardware platform designed for the dual-core ESP32 audio applications, e.g., Wi-Fi or BT
audio speakers, speech-based remote controllers, smart-home appliances with audio functionality(ies), etc.
1.1.1 What You Need
• 1 × ESP32 LyraT V4.3 board
• 2 x 4-ohm speakers with Dupont female jumper wires or headphones with a 3.5 mm jack
• 2 x Micro-USB 2.0 cables, Type A to Micro B
• 1 × PC loaded with Windows, Linux or Mac OS
If you like to start using this board right now, go directly to section Start Application Development.
Overview
The ESP32-LyraT V4.3 is an audio development board produced by Espressif built around ESP32. It is intended for
audio applications, by providing hardware for audio processing and additional RAM on top of what is already onboard
of the ESP32 chip. The specific hardware includes:
•ESP32-WROVER Module
•Audio Codec Chip
• Dual Microphones on board
•Headphone input
•2 x 3-watt Speaker output
• Dual Auxiliary Input
•MicroSD Card slot (1 line or 4 lines)
•Six buttons (2 physical buttons and 4 touch buttons)
•JTAG header
• Integrated USB-UART Bridge Chip
• Li-ion Battery-Charge Management
The block diagram below presents main components of the ESP32-LyraT and interconnections between components.
Components
The following list and figure describe key components, interfaces and controls of the ESP32-LyraT used in this guide.
This covers just what is needed now. For detailed technical documentation of this board, please refer to ESP32-LyraT
V4.3 Hardware Reference and ESP32 LyraT V4.3 schematic (PDF).
ESP32-WROVER Module The ESP32-WROVER module contains ESP32 chip to provide Wi-Fi / BT connectivity
and data processing power as well as integrates 32 Mbit SPI flash and 32 Mbit PSRAM for flexible data storage.
4 Chapter 1. Get Started
