ESP32-C3-DevKitM-1 is an entry-level development board based on `ESP32-C3-MINI-1 <https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf>`_, a module named for its small size. This board integrates complete Wi-Fi and Bluetooth LE functions.
Most of the I/O pins on the ESP32-C3-MINI-1 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 ESP32-C3-DevKitM-1 on a breadboard.
The document consists of the following major sections:
-`Getting Started`_: Overview of ESP32-C3-DevKitM-1 and hardware/software setup instructions to get started.
-`Hardware Reference`_: More detailed information about the ESP32-C3-DevKitM-1's hardware.
-`Hardware Revision Details`_: Revision history, known issues, and links to user guides for previous versions (if any) of ESP32-C3-DevKitM-1.
-`Related Documents`_: Links to related documentation.
Getting Started
===============
This section provides a brief introduction of ESP32-C3-DevKitM-1, instructions on how to do the initial hardware setup and how to flash firmware onto it.
- ESP32-C3-MINI-1 is a general-purpose Wi-Fi and Bluetooth LE combo module that comes with a PCB antenna. At the core of this module is `ESP32-C3FN4 <https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf>`_, a chip that has an embedded flash of 4 MB. Since flash is packaged in the ESP32-C3FN4 chip, rather than integrated into the module, ESP32-C3-MINI-1 has a smaller package size.
- 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.
* - I/O Connector
- All available GPIO pins (except for the SPI bus for flash) are broken out to the pin headers on the board. For details, please see :ref:`user-guide-c3-devkitm-1-v1-header-blocks`.
* - 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 ESP32-C3FN4 chip.
* - Reset Button
- Press this button to restart the system.
* - USB to UART Bridge
- Single USB-UART bridge chip provides transfer rates up to 3 Mbps.
* - RGB LED
- Addressable RGB LED (WS2812), driven by GPIO8.
Start Application Development
-----------------------------
Before powering up your ESP32-C3-DevKitM-1, please make sure that it is in good condition with no obvious signs of damage.
Required Hardware
^^^^^^^^^^^^^^^^^
- ESP32-C3-DevKitM-1
- USB 2.0 cable (Standard-A to Micro-B)
- Computer running Windows, Linux, or macOS
Software Setup
^^^^^^^^^^^^^^
Please proceed to :doc:`../../get-started/index`, where Section :ref:`get-started-step-by-step` will quickly help you set up the development environment and then flash an application example onto your ESP32-C3-DevKitM-1.
Contents and Packaging
----------------------
Retail Orders
^^^^^^^^^^^^^
If you order one or several samples, each ESP32-C3-DevKitM-1 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.
The two tables below provide the **Name** and **Function** of the pin headers on both sides of the board (J1 and J3). The pin header names are shown in :ref:`user-guide-c3-devkitm-1-v1-board-front`. The numbering is the same as in the `ESP32-C3-DevKitM-1 Schematic`_ (PDF).
..[1] P: Power supply; I: Input; O: Output; T: High impedance.
..[2] GPIO2, GPIO8, and GPIO9 are strapping pins of the ESP32-C3FN4 chip. During the chip's system reset, the latches of the strapping pins sample the voltage level as strapping bits, and hold these bits until the chip is powered down or shut down. For description and application of strapping pins, please refer to Section Strapping Pins in `ESP32-C3 Datasheet`_.
