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Introduction

This code is meant to be used with a Teensy 2.0 in conjunction with momentary switch (e.g. infogrip's Specs Switch) to make a flexible, inexpensive button response system.

Currently it uses two 3.5mm TRS jacks that each have three contacts: tip, ring, and sleeve. The switch bridges either the tip or the ring to ground, triggering a keyboard command. If either of these is shorted to ground at boot, that pin is ignored.

For reference:

  • tip - for typical stereo jacks this is the left channel; as wired this is yellow
  • ring - for typical stereo jacks this is the right channel; as wired this is red
  • sleeve - for typical stereo jacks this is ground; as wired this is black

Todo

  • document the board wiring.

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A simple button board for capturing experimental responses

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