> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE10242:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/CE10242:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## 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)