Waveshare ESP32 S3 Mini

Development Board ESP32S3_DEV

ESP32S3

Waveshare ESP32 S3 Mini is a development board based on the ESP32S3 microcontroller using XTENSA architecture.

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

240 MHz CPU 4MB Flash WiFi + BT 5.0

About Waveshare ESP32 S3 Mini

ESP32S3 Xtensa dual-core 32-bit LX7 · 240 MHz

Small ESP32-S3 board from Waveshare with USB and BLE - ideal for embedded projects and compact device prototyping.

Technical Specifications

Complete technical specification details for Waveshare ESP32 S3 Mini

ESP32S3 · Dual-Core + AI

Arch

XTENSA

Clock

240 MHz

Flash

4MB

Connectivity

WiFi

802.11 b/g/n (2.4 GHz)

Bluetooth 5.0

Classic + BLE

Digital IO

Analog In

PWM

Interrupts

Quick Setup

Copy-paste configs for Waveshare ESP32 S3 Mini - auto‑generated from this board's exact hardware specs.

ESP32S3 240 MHz 4MB DIO Xtensa

In Arduino IDE 2 select Esp32s3 Dev from the esp32 by Espressif package. In PlatformIO use board = esp32-s3-devkitm-1. ESP32S3 · 240 MHz · 4MB · DIO.

Tools menu settings

Board (select in Arduino IDE) Esp32s3 Dev

CPU Frequency 240 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 "Esp32s3 Dev" for the Waveshare ESP32 S3 Mini.

platformio.ini


[env:waveshare-esp32s3]
platform  = espressif32
board     = esp32-s3-devkitm-1
framework = arduino

; Exact hardware config for Waveshare ESP32 S3 Mini
board_build.mcu        = esp32s3
board_build.f_cpu      = 240000000L
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-s3-devkitc-1
  framework:
    type: arduino   # or "esp-idf"

# Waveshare ESP32 S3 Mini - 240 MHz ESP32S3
# 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 esp32s3 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 4MB \
    0x0 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x0

Waveshare ESP32 S3 Mini Pinout Diagram

Complete pin reference for Waveshare ESP32 S3 Mini

Useful Links

Datasheets and resources for Waveshare ESP32 S3 Mini

ESP32S3 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for Waveshare ESP32 S3 Mini

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

Pin	Analog	Touch	PWM	Other
1	A0	T1	PWM
2	A1	T2	PWM
3	A2	T3	PWM
4	A3	T4	PWM
5	A4	T5	PWM
6	A5	T6	PWM
7	A6	T7	PWM
8	A7	T8	PWM	SDA
9	A8	T9	PWM	SCL
10	A9	T10	PWM	SS
11	A10	T11	PWM	MOSI
12	A11	T12	PWM	SCK
13	A12	T13	PWM	MISO
14	A13	T14	PWM
15	A14		PWM
16	A15		PWM
17	A16		PWM
18	A17		PWM
19	A18		PWM
20	A19		PWM
43			PWM	TX
44			PWM	RX
48				LED_BUILTIN

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 Waveshare ESP32 S3 Mini

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x0`
Flash mode	dio
Boot mode	qio
PSRAM type	qspi
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)

Configuration Summary

The Waveshare ESP32 S3 Mini uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x0.

Flash mode: dio | Boot mode: qio | PSRAM: qspi

Max sketch size: 1280 KB | Max data size: 320 KB

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Waveshare ESP32 S3 Mini

About Waveshare ESP32 S3 Mini

Technical Specifications

Quick Setup

Waveshare ESP32 S3 Mini Pinout Diagram

Useful Links

Pin Mappings

Default Tools & Configuration

Similar Boards

Heltec WiFi Kit 32(V3)

ESP32-S3-USB-OTG

Espressif ESP32-S3-USB-Bridge

Contents