Are there light switches in your home that aren't as conveniently located as you would like? This laser-based switch decoder and driver allows for flexible control of those lights located in less than ideal places.
I live in an apartment. My kitchen is boring and can be accessed from either end of a central counter. This laser based control, mounts just below the cabinets, scans across the entire sink's counter surface using a single beam of a modified laser pointer. The interrupter beam is detected, processed to provide multiple possible hand based gestures, and the result drives a small relay that enables and disables the light fixture directly over the sink. Sure makes getting a drink of water a bit more interesting.
There are three assemblies in this project. Fashioned out of pill containers and a modified surge protector assembly, they include a wall mounted reflecting mirror, an enclosure with the laser, photo resistor, an indicator LED, an assembly providing AC based power, controller, and relay hardware.
The laser is only modified to minimize its physical length. I used an inexpensive laser pointer and cut the body down past its battery enclosure to just above the pointer switch.
So I understand the principal operation is a beam interruption with some smarts behind it. Two questions: Why did you choose a visible red laser beam rather than an invisible IR LED? Second, as I understand it, laser pointers are not meant for continuous operation due to internal heating. Did you take any steps to keep the laser cooled to prevent its early demise? Thanks RW
The Attack Dyno brings car enthusiasts an attack timer and dynamometer in a small, portable package with the ability to output vehicle torque, speed, horsepower, 1/4 mile times, 0-60 mph acceleration times, ambient air temperature, and more.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.