Espressif ESP32-C3-Lyra

Development Board

Code name: ESP32_C3_LYRA

Espressif ESP32-C3-Lyra is a development board based on the ESP32C3 microcontroller using RISCV architecture.

This board features a maximum CPU frequency of 160 MHz and 4MB flash memory.

About Espressif ESP32-C3-Lyra

The ESP32-C3-Lyra is an audio development board based on the ESP32-C3 module, designed for controlling light with audio. It features a built-in ECM microphone, speaker power amplifier, and speaker connector, making it ideal for applications such as audio broadcasters and rhythm light strips. The board also supports infrared (IR) transmitting and receiving, and provides connectors for both addressable and RGB LED strips.

Where to Buy Espressif ESP32-C3-Lyra

Starting from

$28 per unit

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Technical Specifications

Complete technical specification details for Espressif ESP32-C3-Lyra

Connectivity

WiFi 802.11 b/g/n (2.4 GHz)

Bluetooth 5.0

BLE 5.0

Microcontroller

Model esp32c3

Clock Speed 160 MHz

Flash Size 4MB

Architecture riscv

✨ Features & Pins

Digital IO 22

Analog Input 6

PWM 6

Interrupts 16

Download Full Datasheet

Quick Setup

Copy-paste configs for Espressif ESP32-C3-Lyra - auto‑generated from this board's exact hardware specs.

ESP32C3 160 MHz 4MB DIO Xtensa

In Arduino IDE 2 select Esp32 C3 Lyra from the esp32 by Espressif package. In PlatformIO use board = esp32-c3-devkitm-1. ESP32C3 · 160 MHz · 4MB · DIO.

Tools menu settings

Board (select in Arduino IDE) Esp32 C3 Lyra

CPU Frequency 160 MHz

Flash Size 4MB

Flash Mode DIO

Upload Speed 921600

Architecture Xtensa

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "Esp32 C3 Lyra" for the Espressif ESP32-C3-Lyra.

platformio.ini


[env:esp32-c3-lyra]
platform  = espressif32
board     = esp32-c3-devkitm-1
framework = arduino

; Exact hardware config for Espressif ESP32-C3-Lyra
board_build.mcu        = esp32c3
board_build.f_cpu      = 160000000L
board_build.flash_size = 4MB
board_build.flash_mode = dio
board_upload.flash_size = 4MB

The board value is a close generic match - check PlatformIO board registry for an exact fit.

esp32: block (YAML)


esp32:
  board: esp32-c3-devkitm-1
  framework:
    type: arduino   # or "esp-idf"

# Espressif ESP32-C3-Lyra - 160 MHz ESP32C3
# Flash: 4MB | USB: N/A

Paste into your device's .yaml. See ESPHome ESP32 docs for full options.

esptool.py - flash command


esptool.py \
  --chip esp32c3 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 4MB \
    0x1000 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x1000

Espressif ESP32-C3-Lyra Pinout Diagram

Complete pin reference for Espressif ESP32-C3-Lyra

The ESP32-C3-Lyra pinout provides access to multiple GPIOs and communication interfaces. Key power pins include 3.3V and GND. It features dedicated UART pins (TX, RX), I2C pins (SDA, SCL), and SPI pins (MISO, MOSI, SCK, CS), allowing integration with various peripherals. ADC pins are available for analog input applications. The board supports PWM and other digital functions, making it highly adaptable for embedded projects.

Useful Links

Datasheets and resources for Espressif ESP32-C3-Lyra

Board Datasheet

Technical specifications

ESP32C3 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for Espressif ESP32-C3-Lyra

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Analog	Touch	PWM
0	A0	T0	PWM
1	A1	T1	PWM
2	A2	T2	PWM
3	A3	T3	PWM
4	A4	T4	PWM
5			PWM
6			PWM
7			PWM
8			PWM
9			PWM
10			PWM
11			PWM
12			PWM
13			PWM
14			PWM
15			PWM
16			PWM
17			PWM
18			PWM
19			PWM
20			PWM
21			PWM

Legend

A0 Analog input

T0 Touch sensor

PWM PWM capable

RX/TX Serial pins

LED Built-in LED

# Pin number

Default Tools & Configuration

Build and upload settings for Espressif ESP32-C3-Lyra

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x1000`
Flash mode	dio
Boot mode	dio
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)