{"NAME":"QTPy ESP32-S2","GPIO":[96,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,3840,1376,608,640,0,0,0,0,0],"FLAG":0,"BASE":1}

An ESP32-S2 dev board in the tiny (22mm x 17.9mm) Seeduino XIAO form factor.

This board uses an ESP32-S2F-N4R2 chip with 4 MB of flash and 2 MB of PSRAM.

When the board is booted into debug by holding BOOT and pressing the RESET button the USB-Serial chip on the USB port exposes a serial connection. This can be used to easily flash new firmware.

Flashing

Flash using Tasmota Web Installer and select Tasmota ESP32-S2 option.

For esptool.py download i.e. tasmota32s2.factory.bin and run esptool.py write_flash 0x0 tasmota32s2.factory.bin

To put ESP32-S2 in flash mode GPIO0 needs to be pulled low.

Device Notes

Product Guide

PCB Files

Peripherals

• WS2812B Neopixel
  • On GPIO39 with power on GPIO38.
  • Provided template configures this as WS2812 with GPIO38 as Output Hi for power.
• 1x front panel user button
  • On GPIO0 (doubles as BOOT0 button)
  • Provided template configures this as Button 1.
• STEMMA-QT JST-SH I2C bus connector
  • On GPIO40 (SCL) and GPIO41 (SDA), on a separate I2C bus from the pins labeled SCL/SDA on the board.
  • Provided template configures this as I2C 1.

GPIO Pin Mapping

The user pins labelled on the board are set up as User pins in the template, allowing module configuration. This is a quick reference to map the pin label on the board to the module user pin.

Label	GPIO
A0	GPIO18
A1	GPIO17
A2	GPIO9
A3	GPIO8
SDA	GPIO7
SCL	GPIO6
TX	GPIO5
RX	GPIO16
SCK	GPIO36
MISO	GPIO37
MOSI	GPIO35