It's packed with amazing features and peripherals, ESD protection, castellated headers, wireless connectivity, and stacks of Flash and PSRAM, and it's TinyPICO/TinyS3[D] compatible!

ProS3[D] combines the previous ProS3 and ProS3 uFL boards into a single board, giving you more options and no need to pick one or the other. It also replaces the VBAT ADC sense pin with an I2C battery fuel gauge.

ProS3[D] has full drop-in compatibility with the previous ProS3 versions, but we did need to extend the board length by 2mm to fit everything in and still allow for a solid, well-tuned RF layout.

Two antenna options - one board!

ProS3[D] includes an onboard antenna and a u.FL connector for an external antenna on the same board, and you can switch which antenna to use via the RF switch on the fly from inside your code!

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

Features & Specifications

• 32Bit Dual Core 240MHz
• RISC-V ultra low power core
• 2.4GHz WiFi - 802.11b/g/n
• Bluetooth 5, BLE + Mesh
• 16MB QSPI Flash
• 8MB Extra QSPI PSRAM
• USB-C Connector
• USB ESD protection
• Reverse USB back-feed protection
• 2x 700mA 3.3V LDO Regulator
• Ultra low deep sleep current
• STEMMA connector
• Low Power RGB LED
• 5V presence detection
• LiPo Battery Charging
• MicroBlade LiPo connector
• Power (red), Charge (orange) LEDs
• 27x GPIO broken out
• Castellated Headers
• JTAG Pins + USB Serial JTAG
• NEW 3D High Gain Antenna AND u.FL connector
• NEW I2C Battery Fuel Gauge
• Compatible with TinyPICO, TinyS2 & TinyS3D

What's included?

Ships with a set of male headers you can solder on if required and a Microblade to JST-PH battery converter cable.

Ships with CircuitPython pre-installed!

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.

As newer versions of CircuitPython are released, you are able to update as you require from ciruitpython.org

Code any way you like!

There is also ESP-IDF, MicroPython and Arduino support. Visit the ProS3 product page for more details

Find out more about what I do

Check out my youtube channel to see other projects I work on!

Unexpected Maker YouTube

Unexpected Maker Twitter

Unexpected Maker Website

All products purchased on this store ship directly from me here in Melbourne, Australia.

Orders are processed daily and usually go out the same day they are paid for - allowing for time zone differences of course.

Finally, postage rates suck, sorry :( I'm embarrassed by how much it costs to ship items overseas since COVID, and I do my best to improve rates where I can.

Postage delivery times, if stated, are based on current expectations from Australia Post and may vary.

Please keep in mind that there are still occasional postage delays, including flights out of Australia and inbound customs processing into many countries.