You internet well, sir. :thumbsup: There are two kinds of people in the world: those who can extrapolate from incomplete data. There are only 10 types of people in the world, those who understand binary and those who don't.

Make it more visually fun. :) Small compressor motor that blows up a balloon. The balloon is attached to a tee with a check valve on the compressor side and an electrically activated valve on the whistle side. Compressor blows up the balloon when needed, and the balloon blows the slide whistle when you actuate the valve. We won't sit down. We won't shut up. We won't go quietly away. YouTube and My Mu[sic], Films and Windows Programs, etc.