TinyS2 ESP32-S2

Overview

The TinyS2 is Unexpected Maker's ESP32-S2 board sized to match the beloved TinyPICO footprint at 17.8 × 41 mm. It trades the classic ESP32's dual cores for the ESP32-S2's native USB and hardware security features, while keeping the same compact size, LiPo charging, and 3.3 V 700 mA LDO regulator that made TinyPICO popular.

WiFi (2.4 GHz 802.11 b/g/n) is handled natively by the ESP32-S2, and the native USB port lets you program the board via UF2 drag-and-drop or use it as a serial/HID/MIDI device directly. No separate USB-to-UART bridge chip is required. The onboard RGB LED can be disabled in software to reduce standby current when every microamp matters.

The board ships with CircuitPython pre-loaded and a UF2 bootloader, making it immediately accessible to beginners while still supporting Arduino and MicroPython for advanced users. A JST connector and solder pads accept a LiPo battery, and 17 broken-out GPIO pins give reasonable connectivity for the size.

Unexpected Maker designed TinyS2 as a direct upgrade path for projects outgrowing TinyPICO that need native USB or the ESP32-S2's unique peripheral set (USB OTG, hardware-accelerated crypto, touch matrix, etc.).