Long ago, it was a dark and stormy night…and my own Touch Buttons.
Different way’s, depending on the project. Some are now more than 20yrs old and still working.
Often, I simply use Copper Tape for a Contact Switch and/or for Capacitance Touch.
Sometimes I simply use Two Pieces of Copper Tape (or Alum Foil) separated by thin cardboard with Hole (for the pressed Top piece to contact the bottom piece.
Sometimes I simply use Copper Tape for Capacitance Touch with a piece of Acrylic covering it.
Never had a problem with Corrosion (Why? Do some homework to understand ‘why’ and learn the term ‘Sacrificial Corrosion’ and it’s impact). I’ll save you the dissertation and get to the point: Consider making some simple Prototypes of a Touch Button…
You can make it real simple with just LED’s or just a DMM… Image below shows an Arduino with some Buttons. Other image shows the guts of a Contact-Switch.
With a couple of Prototypes (and lessons/knowledge learned) you’ll be in a good position to assess what you really need for your specific project. If I was interested in making a Clothing item with Button, well, I’d make a prototype…
You can buy Conductive Copper Tape at Amazon… Look for those with a Conductive Coating…
