# TinyS3 \[D\] ESP32-S3 Development Board

**Type:** Product page · **SKU:** CE10240 · **Brand:** [Unexpected Maker](https://core-electronics.com.au/brands/unexpected-maker)
**Page:** https://core-electronics.com.au/unexpected-maker-tinys3-d-esp32-s3-development-board.html ([markdown](https://core-electronics.com.au/unexpected-maker-tinys3-d-esp32-s3-development-board.html.md))

Compact ESP32-S3 dev board with switchable onboard/u.FL antenna, USB-C, LiPo charging and CircuitPython pre-installed, programmable with MicroPython, Arduino or ESP-IDF.

## Pricing

- **Price:** $33.49 (inc GST) — $30.45 AUD, exc GST

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 27 today; more stock is typically available with a 4–6 day lead time.

## Description

Take your next compact IoT build further with TinyS3\[D\] - an ESP32-S3 development board that pairs flexible radio options with maker-friendly power and I/O.

Switch between the onboard 3D high-gain antenna and a u.FL external antenna in firmware, then prototype fast with native USB, battery charging and plenty of GPIO on a board smaller than your thumb. From low-power sensor nodes to USB projects and wireless prototypes, TinyS3\[D\] gives you WiFi and Bluetooth LE 5 connectivity, CircuitPython out of the box, and a clean path to ESP-IDF, Arduino, MicroPython or PlatformIO when your project requires.

*uFL antenna not included.*

### Technical Specifications

 | Microcontroller | ESP32-S3 with dual 32 bit Xtensa LX7 cores, up to 240 MHz |
|---|---|
| Ultra Low Power | RISC-V ULP co-processor; ultra-low deep sleep current |
| Wireless | 2.4 GHz WiFi 802.11 b/g/n; Bluetooth LE 5 + Mesh |
| Memory | 8 MB QSPI Flash + 8 MB QSPI PSRAM |
| Antenna options | Onboard 3D high-gain antenna and u.FL connector; RF switch controllable in code; onboard antenna selected by default (GPIO38) |
| USB | USB-C connector with back-feed protection; native USB + USB Serial JTAG |
| Power | 700 mA 3.3 V LDO regulator |
| Battery | LiPo battery charging; pads on the back for JST PH connector; I2C battery fuel gauge |
| I/O | 17 GPIO; 5 V sense pins |
| Indicators | Low-power RGB LED |
| Dimensions | 36.3 x 17.8 mm; max thickness 4.3 mm at the USB-C end |
| Compatibility | Compatible with TinyPICO and TinyS2 families |
| Pre-installed firmware | CircuitPython with UF2 bootloader |

### Additional Resources

- [Getting Started Guide](https://esp32s3.com/getting-started.html)
- [Unexpected Maker Tiny board comparison matrix](https://d2j6dbq0eux0bg.cloudfront.net/images/wysiwyg/product/90477757/759468759/1752135854690-2125585892/tiny_board_comparison_matrix_jpg.jpg)
- [Pinout compatibility matrix](https://s3.amazonaws.com/images.ecwid.com/images/wysiwyg/product/90477757/602208790/1699344246507962359259/TinyXXX_Pinout_Matrix_jpg) for quick pin mapping reference.
 
### What’s Included

- TinyS3\[D\] ESP32-S3 Development Board
- Colour pinout card
- Unassembled male headers
- Unassembled JST PH battery connector

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE10240-2.jpg)