Looking for a light project to teach young hackers some very basic electronics? Here’s a quick and easy weekend project, a simple metal detector! We all know 555 timers are very useful and pop ...

It was a perfect job for a metal detector, but since they didn’t own one, a serviceable unit had to be assembled from literal garbage. To start with, [zaphod] had to research how a metal ...

Select and design optical detector for given system and application. The course covers the basics of nanophotonic light-emitting devices and optical detectors, including metal-semiconductor, ...