ESP32-S2 mini by Wemos Pinout

ESP32-S2 mini pinout from wemos. Includes Device Firmware Upgrade Mode and LED pins. Plus exhaustive pin list from Espresif Chip.

It was difficult to find the ESP32 S2 Mini pinout and even the wemos website does not specify what the pins are save for in the datasheet. According to the images The ESP32 S2 mini pinouts show pins 1-18,21,33-40 being accessible via the board.

Link to the datasheet: https://www.wemos.cc/en/latest/s2/s2_mini.html

Features of the board:

• USB Type-C
• 4MB Flash
• 2MB PSRAM
• 20 ADCs 18 available through pins (These are run off of two ADC ICs at Signified by ADC1 and ADC2{Chips naming convention not ours [we count with 0 being the first]})
  • ESP32-S2 integrates two 13-bit SAR ADCs thus the ADC1 and ADC2
• 2 DACS
• SPI, UART, and USB On The Go

Full Resolution ESP32-S2 Mini Pinout 2560×1670: https://openmuscle.org/wp-content/uploads/2022/12/ESP32_S2_mini_V2-R6-Open-Muscle-01-scaled.jpg

The image shows the ESP32-S2 pinout numbers but doesn’t specify any other information: which are ADCs which are I2C… etc.

We are currently using the ESP32 S2 pinout and the ESP32 C3 for our testing upcoming devices and will be publishing everything we find here on the site. Above you will find the ESP32 S2 diagram that we created for our use. We are also updating it as we continue to test the boards that we ordered a batch of.

The ESP32-S2 is a very promising chip that has all of the features we are looking for for the Open Muscle Prototype Version 3.

It is interesting that you can use any of the pins for SDA and SCL IIC comunicatons or I2C.
This post here had the same query: https://www.esp32.com/viewtopic.php?t=16416

More Chip information: https://www.espressif.com/en/products/socs/esp32-s2

Pin Description Table:

The pin values in bold can be found on the esp32-s2 mini v1.0.0 board the ones with a strikethrough where not routed to header pins. There will be more information posted as more testing is conducted.