Product description: ESP32-S3-USB-OTG - USB Host / Device - WiFi / Bluetooth / microSD - development board with ESP32-S3-MINI-1-N8 chip
The ESP32-S3-USB-OTG is a versatile development board from Espressif , designed for applications using USB OTG . Featuring dual-function USB Type-A ports, an ESP32-S3-MINI-1-N8 module with 8MB of Flash memory , and built-in Wi-Fi and BLE 5.0 support, the board enables the development of advanced IoT, multimedia, HID, and data storage projects. Equipped with a microSD card reader , a 1.3-inch color LCD screen , buttons, switches, and a charging circuit, it's perfect for prototyping and commercial deployments.
Development board with ESP32-S3-MINI-1-N8 module.
Main features of ESP32-S3-USB-OTG
- ESP32-S3-MINI-1-N8 : 8 MB Flash, WiFi and Bluetooth LE 5.0 support
- Dual-function USB Type-A ports : USB_HOST and USB_DEV with switching circuit
- LCD connector : compatible with 1.3-inch SPI color display
- microSD reader : SDIO 4-bit and SPI support
- Charging system : supports Li-Ion batteries from 3.7 V to 4.2 V with 212.7 mA charging
- Built-in USB-to-UART interface : programming and debugging via microUSB
- Control buttons : Menu, UP+, DW-, Boot, Reset, Power
- LED indication : green, yellow and charging diodes
- Free GPIO pins : enable expansion of functionality
Integrated components on the ESP32-S3-USB-OTG board
- USB_HOST connector - USB Type A female port (for connecting USB devices)
- ESP-S3-MINI-1 module - main microcontroller with WiFi and Bluetooth
- MENU button - GPIO14
- microSD card slot - SDIO and SPI interface support
- USB Switch IC - responsible for selecting between USB_HOST and USB_DEV
- Reset button - resets the system
- USB_DEV connector - USB type A male port (e.g. for power or as a device)
- USB-to-UART connector - microUSB port for programming and debugging
- UP+ Button - GPIO10
- LCD FPC connector - ribbon connector for LCD screen
- DW- Button - GPIO11
- BOOT button - button that starts Flash mode
- Power switch - allows you to switch to battery power
- USB-to-UART bridge - a circuit that converts USB signals to UART
- Yellow LED - GPIO16 (lit when high)
- Green LED - GPIO15 (lit when high)
- Charging LED - lights up red while charging, turns off when charged
- Battery soldering points - for connecting a 3.6V Li-Ion battery
- Charging system - allows you to charge the battery from the USB port
- Free pins - GPIO pins available for your own applications
Arrangement of components on the board.
The board is equipped with, among others, USB Host and Device interfaces, WiFi, Bluetooth LE 5.0.
Compatibility and software
The ESP32-S3-USB-OTG is fully compatible with ESP-IDF , Espressif's official framework. The board supports programming in C, C++, and MicroPython . It allows you to run example projects from the Examples folder, which can be configured using idf.py menuconfig . The board works with popular operating systems: Windows, Linux, and macOS . Available documentation, schematic files, and PCB layouts simplify integration and software development.
Practical applications
The ESP32-S3-USB-OTG is used in many projects, including:
- Wireless data storage (WiFi SD Card Reader)
- HID keyboard or mouse (USB Device)
- MiFi LTE modem (with additional modules)
- Control panel with LCD screen
- USB device controller (e.g. flash drive, mouse)
ESP32-S3-USB-OTG Technical Specifications
- Module: ESP32-S3-MINI-1-N8, 8MB Flash
- Connectivity: WiFi 2.4 GHz, Bluetooth LE 5.0
- USB Ports: USB_HOST (Type A female), USB_DEV (Type A male)
- Interfaces: microSD (SDIO / SPI), LCD FPC, USB-to-UART
- Diodes: yellow, green, charging LED
- Charging: 212.7 mA, battery voltage 3.7 V to 4.2 V
- Power supply: via microUSB, USB_DEV or battery
- USB_HOST current consumption: max 500 mA
- Dimensions: approx. 90 x 30 mm
- Weight: approx. 18 g
Contents of the set
- ESP32-S3-USB-OTG board (motherboard)
- ESP32-S3-USB-OTG_SUB display module
- Set of mounting elements
The microSD card reader and 1.3'' color LCD screen are perfect for many projects.
