Yes
Yes
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Espressif ESP32-S3-Korvo-2
Feature-rich ESP32-S3 development kit with enhanced audio and display support - perfect for multimedia AIoT applications.
ESP32-S3
MCU
240MHz
clock
8MB
flash
512KB
SRAM
3· Two 12-bit, 20 Channels ADC
GPIO
BLE 5.0+ WiFi
radio
Pinout
22 pins
| Pin | GPIO | Labels | Status | Capabilities | Notes |
|---|---|---|---|---|---|
| 1 | - | GND | ground | - | ADC header; ground |
| 2 | - | INT | control | - | ADC header; ES7210 ADC interrupt output |
| 3 | - | SDOUT | safe | - | ADC header; I2S serial data out (ES7210) |
| 4 | - | LRCK | safe | - | ADC header; I2S word/frame clock |
| 5 | - | SCLK | safe | - | ADC header; I2S bit clock |
| 6 | - | MCLK | safe | - | ADC header; I2S master clock |
| 7 | - | GND | ground | - | CODEC header; ground |
| 8 | - | SDOUT | safe | - | CODEC header; I2S serial data out (ES8311) |
| 9 | - | SDIN | safe | - | CODEC header; I2S serial data in (ES8311) |
| 10 | - | LRCK | safe | - | CODEC header; I2S word/frame clock |
| 11 | - | SCLK | safe | - | CODEC header; I2S bit clock |
| 12 | - | MCLK | safe | - | CODEC header; I2S master clock |
| 13 | - | 3V33.3V | power | - | I2C header; 3.3V power |
| 14 | - | CLKSCL | safe | i2c | I2C header; I2C clock (SCL) |
| 15 | - | SDA | safe | i2c | I2C header; I2C data (SDA) |
| 16 | - | GND | ground | - | I2C header; ground |
| 17 | - | 3V33.3V | power | - | UART header; 3.3V power |
| 18 | 43 | IO43TXD0 | strapping | uart | UART header; UART0 TX (U0TXD) |
| 19 | 44 | IO44RXD0 | strapping | uart | UART header; UART0 RX (U0RXD) |
| 20 | 0 | IO0 | strapping | - | UART header; GPIO0 boot strapping pin |
| 21 | - | ENRST | control | - | UART header; chip enable/reset (active low) |
| 22 | - | GND | ground | - | UART header; ground |
Fine - with a little care
sampled at boot or shared with debug/serial| Pin | Label | What to know | Role |
|---|---|---|---|
| IO43 | U0TXD (GPIO43) | Used for bootloader output and UART console logs. If repurposed, you will lose the default serial output (and programming via UART0). | Other |
| IO44 | U0RXD (GPIO44) | Used for bootloader input (download mode via serial). If repurposed, you cannot use the default UART0 download mode for programming the chip. | Other |
| IO0 | GPIO0 | Must be pulled high (default) or low (to enter UART download mode) at reset. Using it for other functions can interfere with boot mode configuration. | Strapping |
These are recommendations, not hard rules - with the right pull-ups, timing and boot-state awareness most pins can be made to work. When in doubt, start green.
Pinout notes Across 22 pins, the Espressif ESP32-S3-Korvo-2 exposes 3 GPIO plus GND and 3V3 for power. 3 of the exposed pins carry boot-time or system duties on the…
Across 22 pins, the Espressif ESP32-S3-Korvo-2 exposes 3 GPIO plus GND and 3V3 for power.
3 of the exposed pins carry boot-time or system duties on the ESP32-S3 (IO43, IO44 and IO0) - check the guidance above before wiring anything to them.
The ESP32-S3-Korvo-2 provides access to various GPIOs and communication interfaces. Key components include the ESP32-S3-WROOM-1 module, left and right microphones, audio ADC and codec chips, audio PA chip, speaker output port, and USB-to-UART bridge chip. The board supports multiple I/O interfaces, facilitating integration with peripherals and sensors for multimedia applications.
Getting started
flash your first firmware in ~2 minutes1
Connect over USB
Serial chip: CP2102N. Not detected? Hold BOOT while plugging in.
2
Flash with your tool
Arduino IDE, PlatformIO, ESPHome or esptool - copy the settings on the right.
3
Verify it runs
The blink example uses GPIO8 - swap for your board's LED pin if different.
Board: Esp32 S3 Korvo 2
Flash Size: 8MB · DIO
Upload Speed: 921600
// blink
pinMode(8, OUTPUT);
digitalWrite(8, LOW); // on (often inverted)[env:esp32-s3-korvo-2]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
monitor_speed = 115200
upload_speed = 921600esp32:
board: esp32-s3-devkitc-1
variant: esp32_s3_korvo_2
framework:
type: esp-idf
# blink - GPIO8
output:
- platform: gpio
pin: 8
id: led_out
light:
- platform: binary
name: "LED"
output: led_outesptool.py --chip esp32s3 --port /dev/ttyACM0 \
write_flash 0x0 firmware.binBuild details: sketch space 1310720 B · data 327680 B · DIO
Specifications
ESP32-S3Compute
MCU
ESP32-S3
Clock
240 MHz
SRAM · Flash
512 KB · 8MB · 8MB (OPI) PSRAM
Radio
Wi-Fi
802.11 b/g/n
Bluetooth
5.0 LE
Antenna
PCB
I/O
GPIO · ADC
3 · Two 12-bit, 20 Channels
UART · I²C · SPI
3 · 2 · 4
PWM
8 channels
Power
USB
Micro-USB (UART) · Micro-USB
Serial
CP2102N
Boot address
0x0
Display
Screen
LCD · 2.4" · 320x240
Driver
ILI9341
Touch
Yes
Flashing
Upload · OTA
esptool_py · esp_ota
Flash · Boot mode
DIO · DIO
Sketch · Data
1.25 MB · 320 KB
The Espressif ESP32-S3-Korvo-2 uses esptool_py for firmware uploads, esp_ota for over-the-air (OTA) updates. Flash mode is DIO with DIO boot mode. The maximum sketch size is 1.25 MB with 320 KB available for data.
About this board
Inside sits the ESP32-S3 - a dual-core Xtensa with vector extensions suited to AI workloads.
At $45.00 it's on the expensive side for an ESP32-S3 board - most land around $30.
Only 3 GPIO are left for your own hardware - the display and onboard peripherals claim the rest.
Around the module: 8MB (OPI) PSRAM, an LCD 2.4" 320x240 display with touch, an OV2640 camera (1600x1200), a microSD slot, a microphone (Dual mic array), a speaker connector, an audio codec (ES8311), an amplifier (NS4150) and REC/MUTE/PLAY/SET/VOL-/VOL+/Boot/Reset buttons.
The ESP32-S3-Korvo-2 is a multimedia development board based on the ESP32-S3 chip. It is equipped with a two-microphone array suitable for voice recognition and near/far-field voice wake-up applications. The board integrates multiple peripherals such as an LCD, camera, and microSD card, and supports JPEG video stream processing. It is ideal for developing low-cost and low-power network-connected audio and video products.
- ES7210 4-channel audio ADC for the two-microphone array
- ESP32-S3-WROOM-1-N8R8 module (8MB flash + 8MB octal PSRAM)
Where to buy
prices are typical street pricesAs an Amazon Associate, ESPboards earns from qualifying purchases.
Resources
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