esp-dev-kits Choose target... Choose version... ESP32-C2 Boards ESP8684-DevKitM-1 ESP8684-DevKitC-02 User Guide Resources and Legal Notices Related Documentation and Resources Disclaimer and Copyright Notice esp-dev-kits ESP8684-DevKitC-02 Download PDF ESP8684-DevKitC-02 [中文] The ESP8684-DevKitC-02 is an entry-level development board based on ESP8684-WROOM-02C/02UC, a general-purpose module with 2 MB/4 MB in-package flash. This board integrates complete Wi-Fi and Bluetooth LE functions. User Guide Getting Started Hardware Overview Hardware Revision Details Related Documents Disclaimer and Copyright Notice Next Previous Suggestion on this document? Provide feedback Help improve this document? Edit on GitHub Need more information? Check ESP forum Sales Questions Technical Inquiries © Copyright 2016 - 2026, Espressif Systems (Shanghai) CO., LTD Built with Sphinx using a theme based on Read the Docs Sphinx Theme. esp-dev-kits Choose target... Choose version... ESP32-C2 Boards ESP8684-DevKitM-1 ESP8684-DevKitC-02 Resources and Legal Notices Related Documentation and Resources Disclaimer and Copyright Notice Terms of Use for Development Board esp-dev-kits Disclaimer and Copyright Notice Download PDF Disclaimer and Copyright Notice [中文] Information in this document, including URL references, is subject to change without notice. All third party’s information in this document is provided as is with no warranties to its authenticity and accuracy. No warranty is provided to this document for its merchantability, non-infringement, fitness for any particular purpose, nor does any warranty otherwise arising out of any proposal, specification or sample. All liability, including liability for infringement of any proprietary rights, relating to use of information in this document is disclaimed. No licenses express or implied, by estoppel or otherwise, to any intellectual property rights are granted herein. The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The Bluetooth logo is a registered trademark of Bluetooth SIG. All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged. Terms of Use for Development Board The development board is intended for R&D evaluation, engineering design verification, and early-stage product development. It is provided as a convenient platform for development and testing. The development board is not intended as a mass-production component or as a finished product for end consumers; therefore, its product management approach differs from that of mass-produced chips and modules. The development board has not obtained specific national or industry certifications and is not covered under regulatory frameworks such as CE, UL, or CCC. As a result, it may not meet the requirements of such regulations. Users should ensure that their use of the development board complies with the applicable laws and regulations of the country or region in which it is used. In addition, the development board has not been designed, validated, or managed for reliability testing, production, or commercial deployment purposes. Users assume full responsibility for the correct and safe use of the product. For applications beyond the intended use of the development board, including but not limited to pre-production testing, system integration, final product delivery, or other commercial uses, the user should, before mass production and in light of its own product requirements, fully evaluate the technical suitability, reliability requirements, regulatory compliance, and system integration risks associated with such applications. The user should also complete all necessary verification, testing, and certification activities relating to system-level design, product certification, reliability validation, regulatory compliance assessment, and commercial deployment. Espressif assumes no liability arising from applications beyond the intended use of the development board. Regardless of whether the parties have entered into a supplier framework agreement, quality agreement, or any other similar agreement, the development board is not subject to any requirements or commitments therein relating to product certification, reliability management, return material analysis (RMA), product/process change notification (PCN), end-of-life (EOL) management, long-term supply commitments, or any other requirements and commitments established under a mass-production product management model. Previous Suggestion on this document? Provide feedback Help improve this document? Edit on GitHub Need more information? Check ESP forum Sales Questions Technical Inquiries © Copyright 2016 - 2026, Espressif Systems (Shanghai) CO., LTD Built with Sphinx using a theme based on Read the Docs Sphinx Theme. esp-dev-kits Choose target... Choose version... ESP32-C2 Boards ESP8684-DevKitM-1 ESP8684-DevKitC-02 User Guide Getting Started Description of Components Start Application Development Contents and Packaging Hardware Overview Block Diagram Header Block Hardware Revision Details Related Documents Disclaimer and Copyright Notice Resources and Legal Notices Related Documentation and Resources Disclaimer and Copyright Notice esp-dev-kits ESP8684-DevKitC-02 ESP8684-DevKitC-02 v1.0 Download PDF ESP8684-DevKitC-02 v1.0 [中文] The latest version: ESP8684-DevKitC-02 v1.0. This user guide will help you get started with ESP8684-DevKitC-02 and will also provide more in-depth information. The ESP8684-DevKitC-02 is an entry-level development board based on ESP8684-WROOM-02C/02UC, a general-purpose module with 2 MB/4 MB in-package flash. This board integrates complete Wi-Fi and Bluetooth LE functions. Most of the I/O pins on the module are broken out to the pin headers on both sides of this board for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP8684-DevKitC-02 on a breadboard. ESP8684-DevKitC-02 The document consists of the following major sections: Getting Started: Overview of the board and hardware/software setup instructions to get started. Hardware Overview: More detailed information about the board’s hardware. Hardware Revision Details: Hardware revision history, known issues, and links to user guides for previous versions (if any) of the board. Related Documents: Links to related documentation. Disclaimer and Copyright Notice: Link to the disclaimer and copyright notice. Getting Started This section provides a brief introduction of ESP8684-DevKitC-02, instructions on how to do the initial hardware setup and how to flash firmware onto it. Description of Components ESP8684-DevKitC-02 - front The key components of the board are described in a counter-clockwise direction. Key Component Description ESP8684-WROOM-02C ESP8684-WROOM-02C from Espressif is a powerful and general-purpose module that offers Wi-Fi and Bluetooth LE coexistence. It has a PCB antenna and a 2 MB/4 MB in-package flash. Pin Headers Most of the GPIO pins on the module are broken out to the pin headers on the board. For details, please see Header Block. 5 V to 3.3 V LDO Power regulator that converts a 5 V supply into a 3.3 V output. 5 V Power On LED Turns on when the USB power is connected to the board. Boot Button Download button. Holding down Boot and then pressing Reset initiates Firmware Download mode for downloading firmware through the serial port. Micro-USB Port USB interface. Power supply for the board as well as the communication interface between a computer and the ESP8684 chip. Reset Button Press this button to restart the system. USB-to-UART Bridge Single USB-to-UART bridge chip provides transfer rates up to 3 Mbps. RGB LED RGB LED, driven by GPIO0, GPIO1 and GPIO8. Start Application Development Before powering up your board, please make sure that it is in good condition with no obvious signs of damage. Required Hardware ESP8684-DevKitC-02 USB 2.0 cable (Standard-A to Micro-B) Computer running Windows, Linux, or macOS Note Be sure to use an appropriate USB cable. Some cables are for charging only and do not provide the needed data lines nor work for programming the boards. Software Setup Please proceed to Get Started, where Section Installation Step by Step will quickly help you set up the development environment then flash an application example onto your board. ESP-AT Support The ESP8684-DevKitC-02 supports ESP-AT software that provides a set of AT commands with which you can quickly integrate wireless connectivity features into your product without a need for embedded application development of the module on this development board. The software is available as a pre-built binary that can be downloaded from ESP-AT repository. For more information about using ESP-AT, including information on how to customize pre-built binaries, please refer to ESP-AT User Guide. Contents and Packaging Retail Orders If you order a few samples, each board comes in an individual package in either antistatic bag or any packaging depending on your retailer. For retail orders, please go to https://www.espressif.com/en/company/contact/buy-a-sample. Wholesale Orders If you order in bulk, the boards come in large cardboard boxes. For wholesale orders, please go to https://www.espressif.com/en/contact-us/sales-questions. Hardware Overview Block Diagram The block diagram below shows the components of ESP8684-DevKitC-02 and their interconnections. ESP8684-DevKitC-02 (click to enlarge) Power Supply Options There are three mutually exclusive ways to provide power to the board: Micro-USB Port, default power supply (recommended) 5V and G (GND) pins 3V3 and G (GND) pins Header Block The two tables below provide the Name and Function of the pins on both sides of the board (J1 and J3). The pin names are shown in ESP8684-DevKitC-02 - front. The numbering is the same as in the ESP8684-DevKitC-02 Schematic (PDF). J1 No. Name Type [1] Function 1 G G Ground 2 3V3 P 3.3 V power supply 3