ESP32-S2-Saola-1M Development Board

ESP32-S2-Saola-1 is a small-sized ESP32-S2-based development board. 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. ESP32-S2-Saola-1 is equipped with ESP32-S2-WROOM module, a powerful and generic Wi-Fi MCU module that has a rich set of peripherals. It’s an ideal choice for a wide variety of application scenarios like wearable electronics and smart home. The board has PCB onboard antenna, and 4MB SPI flash.

Key Component

Description

ESP32-S2-WROVER

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.

I/O Connector

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.

Boot Button

Download button. Holding down Boot and then pressing Reset initiates Firmware Download mode for downloading firmware through the serial port.

Reset Button

Reset button.

3.3 V Power On LED

Turns on when the USB power is connected to the board.

Micro-USB Port

USB interface. Power supply for the board as well as the communication interface between a computer and the ESP32-S2 chip.

RGB LED

Addressable RGB LED (WS2812), driven by GPIO18.

Specification

* ESP32-S2 chip, Xtensa single-core 32-bit LX7 Microcontroller

* 128 KB ROM

* 320 KB SRAM

* 16 KB RTC SRAM

* 40 MHz crystal oscillator integrated

* 4 MB SPI flash

* Operating/Supply Voltage: 3.0 ~ 3.6 V

* Recommended Operating Temperature: –40 ~ 85 °C

Documents

* Product wiki

Shipping List

* ESP32-S2-Saola-1M Development Board x1