I been doing a electronic systems course at my college, and my teacher said that the solder I been using is illegal. Does anyone know anything about this, the solder I been using is Ersin Multicore 5 core solder which is 60% tin and 40% lead.
I have some tripad board lying around and I was wondering what will I need to build a laser, i.e components and values of the resistors and stuff. I want it to be able to be mounted into a project box, as I do not need it to be portable like pocket size.
Does anyone have a parts list and a...