I know there are conductive sprays available, but these are strongly coloured due to the metals inside them. I am trying to make a (dry) wooden surface capacitive, but would like to have the feel and look of the wood remain intact. Therefore I would like a spray/paint/ink that is transparent and conductive and preferably also water-resistant.
Does anyone have any ideas or suggestions?
P.S. I'm using it to measure capacitance all across the wood (which is 1.5m in length) so the resistance per cm^3 doesn't matter. It could have a nice effect if the capacitance differential is significantly different at various distances from the point I measure.
Best Answer
I don't know of any transparent conductive paints. Have you considered using a piece of metal foil (possibly copper roofing foil from a Home Depot or Lowes) with a piece of veneer adhered to it. The capacitive touch sense should still work through the veneer.
You can get all kinds of veneers at Woodcraft if you have a store local to you.
Link to Veneers at Woodcraft