SparkFun
SparkFun Thing Plus - ESP32-S2 WROOM
The SparkFun Thing Plus ESP32-S2 WROOM is a Feather form-factor development board built around Espressif's ESP32-S2 SoC with integrated 2.4 GHz Wi-Fi. It fea...
The SparkFun Thing Plus ESP32-S2 WROOM is a Feather form-factor development board built around Espressif's ESP32-S2 SoC with integrated 2.4 GHz Wi-Fi. It features enhanced security over the original ESP32, including transparent flash and RAM encryption, secure boot with signed firmware, and dedicated HMAC and Digital Signature modules.
The board includes a LiPo charging circuit, USB-C connector, Qwiic connector for I²C peripherals, and a RISC-V ULP co-processor for low-power operation. Note that the ESP32-S2 does not include Bluetooth — it focuses on Wi-Fi connectivity for IoT applications.
Key Features
- ESP32-S2 WROOM Module – 2.4 GHz 802.11 b/g/n Wi-Fi up to 150 Mbps
- Enhanced Security – Flash/RAM encryption, secure boot, HMAC, and Digital Signature modules
- RISC-V ULP Co-Processor – Ultra-low-power processing for battery-efficient designs
- LiPo Charging Circuit – Onboard battery management for portable projects
- USB-C Connector – Modern USB interface for programming and power
- Qwiic Connector – Solderless I²C connection for sensors and accessories
- Feather Form Factor – Compatible with Feather-compatible shields and accessories
- Additional Interfaces – DVP camera interface, LCD interface, and integrated temperature sensor
Specifications
- SoC – Espressif ESP32-S2 WROOM
- Wi-Fi – 802.11 b/g/n, up to 150 Mbps
- Bluetooth – Not included (Wi-Fi only)
- Co-Processor – RISC-V ULP
- USB – USB-C
- Form Factor – Feather / Thing Plus
Ideal For
- IoT and connected device prototyping
- Home automation projects
- Wearable electronics with battery power
- Security-sensitive wireless applications
Package Contents
- 1× SparkFun Thing Plus – ESP32-S2 WROOM
Jargon buster
Plain-language definitions for the technical terms used above.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- Feather-compatible
- Feather-compatible means the board follows the Adafruit Feather size and pin layout used by many add-on boards and enclosures. It matters because it helps you choose accessories that will physically fit and connect to the same pins.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LCD
- LCD stands for liquid crystal display, a screen technology that uses a backlight and liquid crystals to show images or text. It matters because LCD modules usually need a display driver and enough controller pins or a bus interface to send image data.
- LiPo
- A lithium polymer rechargeable battery commonly used in portable electronics projects. It matters because LiPo batteries need correct charging circuitry and care, and this board includes hardware intended for that battery type.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- RAM
- RAM is temporary memory used while a device is running, and its contents are lost when power is removed. A “Run in RAM” mode is useful for testing settings without permanently programming the module, but it may not support every feature.
- RISC-V
- An open processor architecture used inside some modern microcontroller chips. It matters because it affects the software tools, performance, and low-power features available for developing projects on the board.
- Thing Plus
- Thing Plus is SparkFun’s development-board form factor with a small rectangular layout and connections suited to wireless and battery-powered projects. It matters because boards and accessories in the same form factor are easier to mount, wire, and swap between projects.
- USB-C
- A modern reversible USB connector used for power and data connections. On this product it matters because it can connect directly to a computer as well as to a microcontroller project.
Find this product in
Brands
Connectivity
Microcontrollers
SparkFun Thing Plus ESP32-S2 WROOM Schematic
Schematic · 138.4 KB · Click any page to view full size
ESP32-S2 Datasheet
Datasheet · 778.1 KB · Click any page to view full size
ESP32-S2 Technical Reference Manual
Datasheet · 10.2 MB · Click any page to view full size
SparkFun Thing Plus ESP32-S2 WROOM Board Dimensions
Mechanical Drawings · 156.0 KB · Click any page to view full size
SparkFun Thing Plus ESP32-S2 WROOM Graphical Datasheet
Datasheet · 1.2 MB · Click any page to view full size
ESP32-S2 WROOM Module Datasheet
Datasheet · 802.7 KB · Click any page to view full size
ESP32-S2 Hardware Design Guidelines
User Guide · 21.5 MB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 1.7 MB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
