ESP32-C3-DevKitM-1

[中文]

This user guide will help you get started with ESP32-C3-DevKitM-1 and will also provide more in-depth information.

ESP32-C3-DevKitM-1 is an entry-level development board based on ESP32-C3-MINI-1, 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.

ESP32-C3-DevKitM-1

ESP32-C3-DevKitM-1

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.

Description of Components

ESP32-C3-DevKitM-1 - front

ESP32-C3-DevKitM-1 - front

Key Component

Description

ESP32-C3-MINI-1

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, 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.

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.

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 Header Block.

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 Get Started, where Section Installation 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.

For wholesale orders, please go to https://www.espressif.com/en/contact-us/sales-questions.

Hardware Reference

Block Diagram

The block diagram below shows the components of ESP32-C3-DevKitM-1 and their interconnections.

ESP32-C3-DevKitM-1 (click to enlarge)

ESP32-C3-DevKitM-1 (click to enlarge)

Power Supply Options

There are three mutually exclusive ways to provide power to the board:

  • Micro-USB port, default power supply

  • 5V and GND pin headers

  • 3V3 and GND pin headers

It is recommended to use the first option: micro-USB port.

Header Block

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 ESP32-C3-DevKitM-1 - front. The numbering is the same as in the ESP32-C3-DevKitM-1 Schematic (PDF).

J1

No.

Name

Type 1

Function

1

GND

G

Ground

2

3V3

P

3.3 V power supply

3

3V3

P

3.3 V power supply

4

IO2

I/O/T

GPIO2 2, ADC1_CH2, FSPIQ

5

IO3

I/O/T

GPIO3, ADC1_CH3

6

GND

G

Ground

7

RST

I

CHIP_PU

8

GND

G

Ground

9

IO0

I/O/T

GPIO0, ADC1_CH0, XTAL_32K_P

10

IO1

I/O/T

GPIO1, ADC1_CH1, XTAL_32K_N

11

IO10

I/O/T

GPIO10, FSPICS0

12

GND

G

Ground

13

5V

P

5 V power supply

14

5V

P

5 V power supply

15

GND

G

Ground

J3

No.

Name

Type 1

Function

1

GND

G

Ground

2

TX

I/O/T

GPIO21, U0TXD

3

RX

I/O/T

GPIO20, U0RXD

4

GND

G

Ground

5

IO9

I/O/T

GPIO9 2

6

IO8

I/O/T

GPIO8 2, RGB LED

7

GND

G

Ground

8

IO7

I/O/T

GPIO7, FSPID, MTDO

9

IO6

I/O/T

GPIO6, FSPICLK, MTCK

10

IO5

I/O/T

GPIO5, ADC2_CH0, FSPIWP, MTDI

11

IO4

I/O/T

GPIO4, ADC1_CH4, FSPIHD, MTMS

12

GND

G

Ground

13

IO18

I/O/T

GPIO18, USB_D-

14

IO19

I/O/T

GPIO19, USB_D+

15

GND

G

Ground

1(1,2)

P: Power supply; I: Input; O: Output; T: High impedance.

2(1,2,3)

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.

Pin Layout

ESP32-C3-DevKitM-1 (click to enlarge)

ESP32-C3-DevKitM-1 Pin Layout (click to enlarge)

Hardware Revision Details

No previous versions available.