Look at this optical keyboard

It’s easy to make a keyboard, right? Just connect a bunch of matrix switches to the microcontroller, paste some QMK and a set of keycaps there, and you are ready to go. Well, yes, this may apply to more comfortable environments such as home offices and Hackaday dungeons, but if you need to provide input underwater, in unstable areas, or anywhere else, you have to give up what is sealed? Mechanical switches can only take you so far-at some point, You have to go to optics.

This gorgeous keyboard works with reflected IR beams to determine when the fingers occupy a given key position (because what else are you going to call them?). Each key part has an infrared LED and a phototransistor, which work by breaking the beam.

[BenKoning] Want a solution that is easy for others to build, with a low-cost BOM and the lowest software processing cost. It happens to be very good-looking.

The reason you can’t see the internal organs is the black layer-it passes infrared light, but it is black to the eyes. The frosted layer diffuses the beam until the finger is close enough to record.Check after a break, and then use our own to satisfy your desire for optical key switches [Bob Baddeley]In-depth exploration of them.