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vail-adapter
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vail-adapter/doc/easy-install.md

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Easy Installation

  1. Get a Seeeduino XIAO
  2. Download the most recent xiao firmware from releases
  3. Enter bootloader mode
  4. Copy the firmware onto the XIAO

Wideo walkthrough of firmware upload (3:07)

If you would like to use a different microcontroller, see the advanced install instructions.

Wiring

XIAO Pinout

  • GND: Ground (usually in the middle of the paddle)
  • Pin D2: Dit (usually left paddle)
  • Pin D1: Dah (usually right paddle)

If you'd like to wire up a TRS (headphone) jack; or take advantage of some of the adapters other features, such as dedicated straight key, sidetone generation, or capacative touch, see the advanced install instructions.