![Main product image for ProS3[D]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQwNzgsInB1ciI6ImJsb2JfaWQifX0=--c67e1d49ba89c7244c55bc2b67711a8b36820168/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/ProS3D.png)
![Product image 2 for ProS3[D]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQwODIsInB1ciI6ImJsb2JfaWQifX0=--b3b9f2a000fee002c613a77746b80873ea966164/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/ProS3D_pinoutLJ6bMO.png)
![ProS3[D] features](https://unexpectedmaker.com/images/features/main_features_pros3d.webp)
ProS3[D] is the ProS3 you know, re-designed with the Series[D] upgrades: an onboard antenna and a u.FL connector on the same board, switchable from your code, an I²C fuel gauge for accurate battery monitoring & a new ultra low power 1010 Neopixel RGB LED. It keeps its USB ESD protection, castellated edges, 16 MB of flash and 8 MB of PSRAM.
![Series[D] features: Both antennas. One board. · Switch in software. · Know your battery.](https://unexpectedmaker.com/images/product-content/series-d-features-pros3d.gif)
NOTE 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.
| Processor | ESP32-S3 · 32-bit · Dual-core LX7 · up to 240 MHz |
| Flash | 16 MB QSPI |
| PSRAM | 8 MB QSPI |
| GPIO | 27 |
| Wireless | Wi-Fi 4 2.4 GHz · 802.11b/g/n · BLE 5 + Mesh |
| Coprocessor | RISC-V ultra-low-power core |
| USB | USB-C · USB Serial/JTAG and exposed JTAG pins |
| Protection | USB ESD protection · reverse USB back-feed protection |
| Power | 2 × 700 mA · 3.3 V regulators |
| Sleep | Ultra-low deep sleep current |
| Expansion | STEMMA QT connector powered by LDO1 |
| Battery | LiPo charging · MicroBlade connector · I²C battery fuel gauge |
| Sensing | 5V presence detection |
| Onboard | Low-power RGB LED · red power and orange charge LEDs |
| Antenna | 3D high-gain antenna and u.FL connector · software switching |
| Connection | Castellated headers |
| Format | TinyPICO, TinyS2 and TinyS3 compatible |
| Size | 55 × 17.8 mm |
| Thickness | 5.4 mm at the vertical STEMMA QT connector |
In the box
The first 11 pins on the top and 12 pins on the bottom from the USB connector end are the same IO numbers and peripheral functionality as the TinyS3[D], making the ProS3[D] compatible with all TinyPICO/TinyS3[D] shields.
![ProS3[D] compatibility](https://unexpectedmaker.com/images/product-content/compatibility-pros3d.png)
Please have a read through our Getting Started Guide for information on how to start using your ProS3[D] Development Board.
The ProS3[D] ships with the latest version of CircuitPython that supports the ESP32-S3. It also ships with the UF2 bootloader, so you can easily update your ProS3[D] with the latest CircuitPython firmware, whenever you desire.
Of course, you can choose from a wonderful array of other languages and platforms. Explore them all below....
Download ProS3[D] resources, including the schematic, 3D model, KiCAD footprint and more.
The Unexpected Maker Series[D] GitHub repository includes:
Documentation (unexpectedmaker.com)
All products purchased from this store ship directly from me here in Melbourne, Australia. Orders are processed daily and usually go out within a few days! I'm currently unable to ship to Germany, Denmark, or Sweden, but I am doing my best to work with Australia Post and Zonos about this issue; sorry for any inconvenience. Finally, postage rates suck, and they keep going up; sorry :(
