It's packed with amazing features and peripherals, wireless connectivity and stacks of Flash and PSRAM, all in the same tiny package size as the original TinyPICO!

TinyS3[D] combines the previous TinyS3 and TinyS3 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.

TinyS3[D] has full drop-in compatibility with the previous TinyS3 versions, but we did need to extend the board length by 1.3mm to fit everything in and still allow for a solid, well-tuned RF layout.

Two antenna options - one board!

TinyS3[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
• 8MB QSPI Flash
• 8MB Extra QSPI PSRAM
• USB-C Connector
• Reverse USB back-feed protection
• 700mA 3.3V LDO Regulator
• Ultra low deep sleep current
• Low Power RGB LED
• 5V presence detection
• LiPo Battery Charging
• JST pads on the back supports PH connector
• Power (red), Charge (orange) LEDs
• 17x GPIO broken out
• USB Serial JTAG
• NEW 3D High Gain Antenna AND u.FL connector
• NEW I2C Battery Fuel Gauge
• Compatible with TinyPICO & TinyS2

Tiny board comparison matrix

Pinout compatibility matrix

What's included?

Ships with a set of male headers and JST connector that you can solder on if required.

Ships with CircuitPython pre-installed!

The TinyS3[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 TinyS3[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 TinyS3 product page for more details.

Find out more about what I do

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