Most QWERTY computer keyboards use a single rubber-like membrane underneath the keys that makes contact with a circuit board when the key is fully depressed. Also called a "dome switch keyboard ...

The electronics weren’t hard, but custom membrane keypads are hard to come by. No matter, because it’s actually pretty easy to build your own. Membrane switches are usually made with ...

Products & Capabilities. Elastomers. Gaskets, O-Rings, Seals. Diaphragms. Molded/Laid-Up Tubes and Hoses. Shock Mounts. PTT/Volume/Squelch/Function Buttons and Knobs ...