Espressif ESP32-Korvo

Development Board

Code name: ESP32_KORVO

Espressif ESP32-Korvo is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 4MB flash memory.

About Espressif ESP32-Korvo

The ESP32-Korvo is a powerful AI voice development board based on the ESP32-WROVER module. Designed for speech recognition and audio applications, it integrates an audio codec, multiple microphone inputs, and a DSP for advanced audio processing. The board supports Wi-Fi and Bluetooth connectivity, making it ideal for AI-powered voice assistants, smart home applications, and audio streaming projects.

Espressif ESP32-Korvo Technical Specifications

🛰️ Connectivity

WiFi: 802.11 b/g/n (2.4 GHz)

Bluetooth: 4.2

BLE: 4.2

🧠 Microcontroller

Model: esp32

Clock Speed: 240 MHz

Flash Size: 4MB

Architecture: xtensa

✨ Features

26 digital IO pins
16 external interrupt pins
10 analog input pins
8 PWM pins

View Full Datasheet

Espressif ESP32-Korvo Pinout

The ESP32-Korvo pinout includes GPIOs optimized for audio applications. It provides power pins (5V, 3.3V, and GND), UART (TX, RX), I2C (SDA, SCL), SPI (MISO, MOSI, SCK, SS), and dedicated I2S interfaces for high-quality audio processing. The board also features microphone input pins and speaker output for AI-driven voice applications.

Espressif ESP32-Korvo Useful Links

Datasheet

https://github.com/espressif/esp-skainet/blob/master/docs/en/hw-reference/esp32/user-guide-esp32-korvo-v1.1.md

ESP32 Datasheet

https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf

Espressif ESP32-Korvo Pin Mappings

Below you can find the Espressif ESP32-Korvo pinout. This development board provides 26 digital IO pins, out of which 16 can be used as external interrupt pins, 10 as analog input pins and 8 pins have Pulse-Width Modulation (PWM).

Pin	Analog	Touch	PWM	Other
0	A11	T1	PWM
1			PWM	TX
2	A12	T2	PWM
3			PWM	RX
4	A10	T0	PWM
5			PWM
12	A15	T5	PWM
13	A14	T4	PWM
14	A16	T6	PWM
15	A13	T3	PWM
16			PWM
17			PWM
18			PWM
19			PWM
21			PWM
22			PWM
23			PWM
25	A18		PWM	DAC1
26	A19		PWM	DAC2
27	A17	T7	PWM
32	A4	T9	PWM
33	A5	T8	PWM

Analog Analog input pins

Touch Touch pins

PWM Pulse-Width Modulation

RX / TX Receive/Transmit

LED_BUILTIN Built-in LED

Function Other functions

Default Tools for Espressif ESP32-Korvo

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	1920 Kb (1966080 B)
Maximum data size	320 Kb (327680 B)

The Espressif ESP32-Korvo development board by default uses esptool_py uploader tool, network uploader tool for Over-the-air (OTA) uploads and esptool_py bootloader tool. The bootloader starts at address "0x1000". Flash mode and boot mode for Espressif ESP32-Korvo development board by default is dio and dio respectively.