# ProS3 \[D\] ESP32-S3 Development Board

**Type:** Product page · **SKU:** CE10242 · **Brand:** [Unexpected Maker](https://core-electronics.com.au/brands/unexpected-maker)
**Page:** https://core-electronics.com.au/unexpected-maker-pros3-d-esp32-s3-development-board.html ([markdown](https://core-electronics.com.au/unexpected-maker-pros3-d-esp32-s3-development-board.html.md))

The Ultimate Pro ESP-32 S3 development board. Jam packed with all of the features for any microcontroller project.

## Pricing

- **Price:** $40.21 (inc GST) — $36.55 AUD, exc GST

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 18 today; more stock is typically available with a 4–6 day lead time.

## Description

The Unexpected Maker ProS3 \[D\] combines the amazing performance of the ESP32-S3 with ultra-low-power operation. Equipped with 16 MB QSPI flash, 8 MB QSPI PSRAM, switchable onboard or external antenna and either castellated or header connections.

With built-in LiPo charging, USB protection, plus 27 GPIOs and a USB-serial JTAG interface. This board offers everything a Maker/Engineer needs to get started with their projects.

### Technical Specifications

- Microcontroller: ESP32-S3, 32-bit dual-core 240 MHz with RISC-V ultra-low-power core
- Wireless: 2.4 GHz WiFi (802.11 b/g/n); Bluetooth 5, BLE + Mesh
- Memory: 16 MB QSPI flash; 8 MB extra QSPI PSRAM
- Power regulators: 2 × 700 mA 3.3 V LDOs; ultra-low deep-sleep current
- USB-C connector with ESD and reverse-feed protection
- Debugging: JTAG pins + USB-serial JTAG over USB-C
- Connectors: MicroBlade LiPo; STEMMA QT (powered by LDO1)
- Battery features: LiPo charging circuitry; I²C fuel gauge; 5 V presence detection
- Indicators: Low-power RGB LED; Power (red) and Charge (orange) LEDs
- Antennas: Onboard 3D high-gain plus a u.FL external (switchable via RF switch, GPIO11)
- GPIO: 27 pins broken out via castellated headers
- Dimensions: 55 mm × 17.8 mm; max thickness 5.4 mm (at STEMMA QT connector)
 
![](https://core-electronics.com.au/media/wysiwyg/product_images/CE10242-ProS3-d-_Pinout.jpg)

### Compatibility

 | Platform | Details |
|---|---|
| CircuitPython | Pre-installed UF2 bootloader; updates available through the website |
| ESP-IDF | Official Espressif SDK for C/C++ development |
| MicroPython | Community-supported Python firmware |
| Arduino | ESP32-S3 board support via Arduino IDE |
| PlatformIO | Multi-platform development in VS Code or CLI |

### Additional Resources

- [CircuitPython board support files](https://circuitpython.org/board/unexpectedmaker_pros3/)
- [ProS3\[D\] product page](https://esp32s3.com/pros3d.html)
 
### What’s Included

- ProS3\[D\] board (in antistatic bag)
- Colour pin-out reference card
- Unassembled male castellated headers
- JST-PH 2.0 mm to Picoblade 1.25 mm battery-cable converter

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE10242-2.jpg)