An ESP32 Wi-Fi/Bluetooth board that fits in a USB port

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FEMU (Femto’s ESP32 ModUle) is an incredibly small micro-controller that fits in a USB port. It runs MicroPython, has an RGB LED, and has Wi-Fi/Bluetooth 4.2 capabilities! Take it with you anywhere, and start hacking!


  • Components:
    • ESP32-D2WD - 2 MiB flash
    • LDO regulator - for efficient power
    • FTDI - for USB communication
    • RGB LED
    • Ceramic antenna
  • Connectivity:
    • USB - of course
    • GND, 3V3, DAC pins - along the accessible curved edge
  • Wireless:
    • Wi-Fi
    • Bluetooth 4.2
  • Programming:
    • MicroPython
    • Arduino IDE compatible
  • Design:
    • Based on the Tomu form-factor
    • Micro vias and blind/buried vias
    • 4-layer board

FEMU in a Port

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