Introducing the ProS3[D] - The Ultimate Pro ESP32-S3 Development Board!

Two antenna options - one board!

ProS3[D] includes an onboard antenna and a u.FL connector for an external antenna on the same board, and you can switch which antenna to use via the RF switch on the fly from inside your code!

The onboard antenna is selected by default, so you never need to worry about the RF switch being in a bad state, or the ESP32-S3 getting damaged if you forget to plug in an external antenna.

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 the ProS3, you can grab the latest here

You can also use Arduino 2.0.3 or later, which has added S3 support. There is also ESP-IDF and an early MicroPython port available as well. Visit the ProS3 product page for more details.

Features & Specifications

• 32Bit Dual Core 240MHz
• RISC-V ultra low power core
• 2.4GHz WiFi - 802.11b/g/n
• Bluetooth® 5, BLE + Mesh
• 16MB QSPI Flash
• 8MB Extra QSPI PSRAM
• USB-C Connector
• USB ESD protection
• Reverse USB back-feed protection
• JTAG Pins + USB Serial JTAG
• 2x 700mA 3.3V LDO Regulator
• Ultra low deep sleep current
• STEMMA QT connector powered by LDO1
• Low Power RGB LED
• 5V presence detection
• LiPo Battery Charging
• MicroBlade LiPo connector
• Power (red), Charge (orange) LEDs
• 27x GPIO broken out
• Castellated Headers
• NEW I2C Battery Fuel Gauge
• NEW 3D High Gain Antenna AND u.FL connector
• Compatible with TinyPICO, TinyS2 & TinyS3

Play video: New Products 8/21/25 Feat. Adafruit BMP581 I2C / SPI Temp Humidity Pressure Sensor - STEMMA QT