This user guide provides information on ESP32-S2-Saola-1, a small-sized ESP32-S2 based development board produced by Espressif.
The document consists of the following major sections:
Getting started: Provides an overview of the ESP32-S2-Saola-1 and hardware/software setup instructions to get started.
Hardware reference: Provides more detailed information about the ESP32-S2-Saola-1’s hardware.
Related Documents: Gives links to related documentation.
This section describes how to get started with ESP32-S2-Saola-1. It begins with a few introductory sections about the ESP32-S2-Saola-1, then Section Start Application Development provides instructions on how to get the ESP32-S2-Saola-1 ready and flash firmware into it.
ESP32-S2-Saola-1 is a small-sized ESP32-S2 based development board produced by Espressif. Most of the I/O pins 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-Saola-1 on a breadboard.
To cover a wide range of users’ needs, ESP32-S2-Saola-1 supports:
In this guide, we take ESP32-S2-Saola-1 equipped with ESP32-S2-WROVER as an example.
Contents and Packaging¶
If you order a few samples, each ESP32-S2-Saola-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.
Description of Components¶
ESP32-S2-WROVER is a powerful, generic Wi-Fi MCU module that integrates ESP32-S2. It has a PCB antenna, a 4 MB external SPI flash and an additional 2 MB PSRAM.
All available GPIO pins (except for the SPI bus for flash and PSRAM) are broken out to the pin headers on the board. Users can program ESP32-S2 chip to enable multiple functions such as SPI, I2S, UART, I2C, touch sensors, PWM etc.
USB to UART Bridge
Single USB-UART bridge chip provides transfer rates up to 3 Mbps.
Download button. Holding down Boot and then pressing Reset initiates Firmware Download mode for downloading firmware through the serial port.
3.3 V Power On LED
Turns on when the USB power is connected to the board.
USB interface. Power supply for the board as well as the communication interface between a computer and the ESP32-S2 chip.
Addressable RGB LED (WS2812), driven by GPIO18.
Start Application Development¶
Before powering up your ESP32-S2-Saola-1, please make sure that it is in good condition with no obvious signs of damage.
USB 2.0 cable (Standard-A to Micro-B)
Computer running Windows, Linux, or macOS