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Adapter board for USB-to-serial cable

adapter board to connect USB-to-serial cable to J1 header on Open Hardware Summit badge

assembled adapter board on badge

OSH Park shared project

Order the PCB from OSH Park:

Adapter board for USB-to-serial cable

OSH Park PCB preview

order from OSH Park

Blog post

Adapter board for Open Hardware Summit badge

The badge features an ESP32 microcontroller running MicroPython firmware. The firmware provides a Python interpreter prompt (REPL) on the serial port which allows interactive programming of the badge! assembled adapter board on badge

Bill of Materials (BoM)

  • Digi-Key shopping cart

  • Switch for programming mode

    • E-Switch EG1218
    • Slide Switch SPDT
    • Digi-Key: EG1903-ND
  • Pushbutton for reset

    • Omron B3F-1000
    • Tactile Switch SPST-NO
    • Digi-Key: SW400-ND
  • Header for FTDI usb-to-serial cable

    • TE AMP 9-146282-0-06
    • 1x6 Pin Header 0.1" pitch
    • Digi-Key: A34253-06-ND
  • Header to connect J1 socket on badge

    • Harwin M20-9720345
    • 2x3 Pin Header 0.1" pitch
    • Digi-Key: 952-1921-ND
  • J1 header socket on the badge

    • Harwin 952-1781-ND
    • 2x3 Header Socket 0.1" pitch
    • Digi-Key: M20-7830346