![Main product image for FeatherS3[D]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQwNzMsInB1ciI6ImJsb2JfaWQifX0=--7552f933bc9fed14c7a870ba73f0ddf55d774ff5/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/FeatherS3D.png)
![Product image 2 for FeatherS3[D]](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NzQwNjksInB1ciI6ImJsb2JfaWQifX0=--f958ba5e863f7705b7bb5105b9d19c3a8c563476/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJwbmciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--605f1da017bcbb03ce31845cd0e81d97e3b3c574/FeatherS3D_pinoutEuspVQ.png)
![FeatherS3[D] features](https://unexpectedmaker.com/images/features/main_features_feathers3d.webp)
FeatherS3[D] is the FeatherS3 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 16 MB of flash, 8 MB of PSRAM, two STEMMA QT connectors and the Feather format.
![Series[D] features: Both antennas. One board. · Switch in software. · Know your battery.](https://unexpectedmaker.com/images/product-content/series-d-features-feathers3d.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 | 21 |
| 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 |
| Protection | Reverse USB back-feed protection |
| Power | 2 × 700 mA · 3.3 V regulators |
| Sleep | Ultra-low deep sleep current |
| Expansion | 2 × STEMMA connectors |
| Battery | LiPo charging |
| Sensing | VBAT voltage check · 5V presence detection |
| Onboard | Low-power RGB LED · red power and orange charge LEDs |
| Antenna | 3D high-gain antenna |
| Format | FeatherWing compatible |
| Size | 52.3 × 22.9 mm |
| Thickness | 6.6 mm at JST PH battery connector |
In the box
Please have a read through our Getting Started Guide for information on how to start using your FeatherS3[D] Development Board.
The FeatherS3 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 FeatherS3 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 FeatherS3[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 :(
