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This user guide provides information on Espressif's small-sized development board ESP32-S2-DevKitM-1(U).
ESP32-S2-DevKitM-1(U) is a general-purpose development board based on ESP32-S2FH4 chip, which falls into ESP32-S2 chip series. With a rich peripheral set and optimized pinout, this board allows rapid prototyping.
ESP32-S2-DevKitM-1 is embedded with ESP32-S2-MINI-1 module (on-board PCB antenna), while ESP32-S2-DevKitM-1U with ESP32-S2-MINI-1U module (external antenna connector).
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The document consists of the following major sections:
- Getting started: Provides an overview of the ESP32-S2-DevKitM-1(U) and hardware/software setup instructions to get started.
- Hardware reference: Provides more detailed information about the ESP32-S2-DevKitM-1(U)'s hardware.
- Hardware Revision Details: Revision history, known issues, and links to user guides for previous versions (if any) of ESP32-S2-DevKitM-1(U).
- Related Documents: Gives links to related documentation.
This section describes how to get started with ESP32-S2-DevKitM-1(U). It begins with a few introductory sections about the ESP32-S2-DevKitM-1(U), then Section Start Application Development provides instructions on how to get the ESP32-S2-DevKitM-1(U) ready and flash firmware into it.
ESP32-S2-DevKitM-1(U) is entry-level development board equipped with either ESP32-S2-MINI-1 or ESP32-S2-MINI-1U module. Most of the I/O pins on the module are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-S2-DevKitM-1(U) on a breadboard.
If you order a few samples, each ESP32-S2-DevKitM-1(U) 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.
If you order in bulk, the boards come in large cardboard boxes.
For wholesale orders, please check Espressif Product Ordering Information (PDF).
ESP32-S2-DevKitM-1 - front
The key components of the board are described in a clockwise direction.
| Key Component | Description |
|---|---|
| ESP32-S2-MINI-1 or ESP32-S2-MINI-1U | ESP32-S2-MINI-1 and ESP32-S2-MINI-1U are two powerful, generic Wi-Fi MCU modules that integrate ESP32-S2FH4 chip. ESP32-S2-MINI-1 comes with a PCB antenna, and ESP32-S2-MINI-1U with an external antenna connector. They both feature a 4 MB external SPI flash. |
| Pin Headers | All available GPIO pins (except for the SPI bus for flash) are broken out to the pin headers on the board. Users can program ESP32-S2FH4 chip to enable multiple functions such as SPI, I2S, UART, I2C, touch sensors, PWM etc. For details, please see user-guide-devkitm-1-v1-header-blocks. |
| 3.3 V Power On LED | Turns on when the USB power is connected to the board. |
| USB to UART Bridge | Single USB-UART bridge chip provides transfer rates up to 3 Mbps. |
| Reset Button | Reset button. |
| Micro-USB Port | USB interface. Power supply for the board as well as the communication interface between a computer and the ESP32-S2FH4 chip. |
| Boot Button | Download button. Holding down Boot and then pressing Reset initiates Firmware Download mode for downloading firmware through the serial port. |
| RGB LED | Addressable RGB LED, driven by GPIO18. |
| 5 V to 3.3 V LDO | Power regulator that converts a 5 V supply into a 3.3 V output. |
| External Antenna Connector | On ESP32-S2-MINI-1U module only. For connector dimensions, please refer to Section External Antenna Connector Dimensions in ESP32-S2-MINI-1 & ESP32-S2-MINI-1U Datasheet. |
Before powering up your ESP32-S2-DevKitM-1(U), please make sure that it is in good condition with no obvious signs of damage.
- ESP32-S2-DevKitM-1(U)
- For ESP32-S2-DevKitM-1U, an antenna is also required.
- 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.
Please proceed to ../../get-started/index, where Section get-started-step-by-step will quickly help you set up the development environment and then flash an application example into your ESP32-S2-DevKitM-1(U).
Note
ESP32-S2 series of chips only is only supported in ESP-IDF master or version v4.2 and higher.
A block diagram below shows the components of ESP32-S2-DevKitM-1 and their interconnections.
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.
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 user-guide-devkitm-1-v1-board-front. The numbering is the same as in the ESP32-S2-DevKitM-1(U) Schematics (PDF).
| No. | Name | Type1 | Function |
|---|---|---|---|
| 1 | 3V3 |
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| 2 | 0 |
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| 3 | 1 |
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| 4 | 2 |
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| 5 | 3 |
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| 6 | 4 |
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| 7 | 5 |
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| 8 | 6 |
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| 9 | 7 |
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| 10 | 8 |
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| 11 | 9 |
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| 12 | 10 |
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| 13 | 11 |
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| 14 | 12 |
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| 15 | 13 |
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| 16 | 14 |
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| 17 | 15 |
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| 18 | 16 |
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| 19 | 17 |
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| 20 | 5V |
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| 21 | G |
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| No. | Name | Type | Function |
|---|---|---|---|
| 1 | G | G | Ground |
| 2 | RST | I | CHIP_PU |
| 3 | 46 | I | GPIO46 |
| 4 | 45 | I/O/T | GPIO45 |
| 5 | RX | I/O/T | U0RXD, GPIO44, CLK_OUT2 |
| 6 | TX | I/O/T | U0TXD, GPIO43, CLK_OUT1 |
| 7 | 42 | I/O/T | MTMS, GPIO42 |
| 8 | 41 | I/O/T | MTDI, GPIO41, CLK_OUT1 |
| 9 | 40 | I/O/T | MTDO, GPIO40, CLK_OUT2 |
| 10 | 39 | I/O/T | MTCK, GPIO39, CLK_OUT3 |
| 11 | 38 | I/O/T | GPIO38, FSPIWP |
| 12 | 37 | I/O/T | SPIDQS, GPIO37, FSPIQ |
| 13 | 36 | I/O/T | SPIIO7, GPIO36, FSPICLK |
| 14 | 35 | I/O/T | SPIIO6, GPIO35, FSPID |
| 15 | 34 | I/O/T | SPIIO5, GPIO34, FSPICS0 |
| 16 | 33 | I/O/T | SPIIO4, GPIO33, FSPIHD |
| 17 | 26 | I/O/T | SPICS1, GPIO26 |
| 18 | 21 | I/O/T | RTC_GPIO21, GPIO21 |
| 19 | 20 | I/O/T | RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+ |
| 20 | 19 | I/O/T | RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D- |
| 21 | 18 | I/O/T | RTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3, RGB LED |
This is the first revision of this board released.
- ESP32-S2-DevKitM-1(U) Schematics (PDF)
- ESP32-S2-DevKitM-1(U) PCB Layout (PDF)
- ESP32-S2-DevKitM-1(U) Dimensions (PDF)
- ESP32-S2 Series Datasheet (PDF)
- ESP32-S2-MINI-1 & ESP32-S2-MINI-1U Datasheet (PDF)
- Espressif Product Ordering Information (PDF)
For other design documentation for the board, please contact us at sales@espressif.com.
P: Power supply; I: Input; O: Output; T: High impedance.↩