Electronics
This electronics section hold some complete electronics projects integrating optoelectronic components. They are free to use as learning material or the basis for your own tailored design. The projects include production Gerber files and bill of material (BOM), so you can even go straight to fabricating the boards, in case they are a good enough fit for your need.
The projects are in open source software that is free to download and use. My preferred open source Electronic design automation (EDA) is gEDA and KiCad. The latter is the most active project at the moment, so I give the projects in KiCad.