I wouldn't mind trying some of those projects like that . But I don't know much at all about diodes , rectifiers , milliamps , etc,etc. And very few times in my life was I able to actually successfully make a good solder connection . I used to go into Radio Shack and look around , and ask questions about a few ideas I had , but now Radio Shack is not around and neither is my Dad , that knew a lot on that subject . Would be great to have him around to work on a few of those projects with and learn . Maybe I'll look around for a Tech for Dummies book and see if it'll sink in .