ProS3 - ESP32-S3 Development Board

Reference: ESP32 PROS301

4 Items

The Ultimate Pro ESP32-S3 Development Board!

Packed with amazing features and peripherals, ESD protection, castellated headers, wireless connectivity and stacks of Flash and PSRAM, and it's TinyPICO/ProS3 compatible!

Features

Dual 32bit Xtensa LX7 cores @ up to 240Mhz
RISC-V Ultra Low Power Co-processor
2.4GHz Wifi - 802.11b/g/n
Bluetooth 5, BLE + Mesh
16MB QSPI Flash
8MB of extra QSPI PSRAM
2x 700mA 3.3V LDO Regulators
LDO2 is user controlled & auto-shuts down in deep-sleep
Low power RGB LED
ULTRA LOW Deep Sleep Current
USB-C Connector with back-feed protection
USB ESD protection
Native USB + USB Serial JTAG
LiPo Battery Charging + PicoBlade connector
VBAT and 5V Sense Pins
3D High Gain Antenna
STEMMA connector powered by LDO1
27x GPIO including castellated headers
JTAG pins on the header
TinyPICO/ProS3 compatibility
Board Dimensions: 53mm x 17.8mm
Max Thickness: 5.4mm at the vertical STEMMA connector

2x 3.3V Regulators? Really?

Yup! The first one is for the general operation of the board and the ESP32-S3, PSRAM and Flash.

The second LDO is for you to use to connect external 3V3 modules, sensors and peripherals, and it has programmable EN control tied to IO17 + it’s connected to the deep sleep capabilities of the ESP32-S3, so if the ESP32-S3 goes into deep sleep, the 2nd LDO is automatically shut down for you!

Both regulators are ultra low noise and have ultra low quiescent current, and both support a maximum of 700mA output.

Getting Started

Unexpected Maker ESP32-S3 boards can be used with CircuitPython, MicroPython, ESP-IDF or Arduino.

CircuitPython

Your board ships with the latest version of CircuitPython with ESP32-S3 support.

It also ships with the UF2 bootloader, so you can easily update your board with the latest CircuitPython firmware, whenever you desire.

Just plug your board into your computer and it will appear in your filesystem as a USB flash drive! Just copy your code over, or edit your code directly on the drive. Coding a microcontroller has never been easier!

As newer versions of CircuitPython are released, you are able to update as you require from circuitpython.org

If you need to grab the shipping CircuitPython code that comes with your board, you can grab the latest here

MicroPython

MicroPython has excellent support for the ESP32, and that includes the ESP32-S3.

If you would like to put MicroPython on your new board, please follow the flashing guide for your board from this firmware link and don't forget to erase your flash first!

For more information about developing projects on your new board, using MicroPython, check out the MicroPython documentation.

ESP-IDF

ESP32-S3 support in the IDF is part of the v4.4 release. The latest IDF is v5.0, but it's in early development, so I recommend you stick to the v4.4 release branch for the time being as there are some low level breaking changes in v5.

Check out the ESP32-S3 IDF docs for information on how to install it and develop for the ESP32-S3

Arduino

If you have not already setup your Arduino IDE environment to work with ESP32, please follow the official Espressif ESP32 Arduino Core instructions to install it.

Arduino support for the ESP32-S3 is available in 2.0.3 and later. Please install the latest version to be able to select ESP32-S3 boards with the latest fixes and features.

Downloads

ProS3 Schematic

github

The Unexpected Maker ESP32-S3 github Repo includes the following items:

3D STEP file for the ProS3
KiCAD 6 symbol file for the ProS3 that you can use when integrating one of them into one of your PCB design
KiCAD 6 footprint files for the ProS3 including a TH and SMD variant
PDF Schematic for the ProS3
Hi-res pinout reference card for the ProS3
Fritzing parts (soon)