Unexpected Maker Launches the FeatherS2, a Compact Full-Featured Feather-Format ESP32-S2 Board
With an ESP32-S2, 8MB of PSRAM, 16MB of flash storage, two 3.3V LDOs, an RGB LED, light sensor, and more, this $20 board packs a punch.
Unexpected Maker Seon Rozenblum has officially released the FeatherS2, a Feather-compatible development board built around Espressif's latest ESP32-S2 microcontroller.
Rozenblum showed off the FeatherS2 design earlier this year, as a follow-up to his earlier ProS2 design. In addition to the 240MHz single-core ESP32-S2 itself, Espressif's latest system-on-chip and the first to include an ultra-low-power coprocessor built around the free and open-source RISC-V instruction set architecture, the board includes 8MB of pseudostatic RAM (PSRAM), 16MB SPI flash, an on-board Fractus "3D" antenna for the radio, two 700mA 3.3V LDO regulators, a lithium-polymer charging circuit, 21 GPIO pins, a QWIIC and STEMMA QT compatible I2C connector, and USB Type-C for power and connectivity — on top of an RGB LED and ambient light sensor.
"Each FeatherS2 currently ships with the Beta 1 version of CircuitPython 6.0, which includes initial support for the ESP32-S2," Rozenblum notes. "What does that mean? Though most ESP32 features are present in this beta, this version of CircuitPython is the first time CircuitPython has offered support for the ESP32, so there are still things to be added and I’m sure bugs to find and squish, but it’s very usable!"
Rozenblum has priced the finished FeatherS2 design aggressively: The board costs just $20 in single-unit quantities, dropping to $18.50 each for a ten-pack. All include a full set of male pin headers, though they are not soldered in place.
Full details, and the link to order a board, can be found on the Unexpected Maker shop.