Electronics

For electronic circuits

http://www.discovercircuits.com/DJ-Circuits/daj-main.htm

http://dmohankumar.wordpress.com/

http://www.electroschematics.com/

http://electroskan.wordpress.com/

http://www.bowdenshobbycircuits.info/

http://www.epemag3.com/library.html

http://www.electronic-circuits-diagrams.com/

http://www.redcircuits.com/Hobby.htm

http://www.electronics-lab.com/downloads/index.html

http://www.electrokits.com/

http://www.hobbyprojects.com/electronics-circuits.html

http://www.electronics2000.co.uk/calc/ electronic calculators and converters

http://www.hobbyprojects.com/dictionaries.html electronic dictionary

http://projectsqa.com/forum_posts.asp?TID=138 projects

http://www.electronicrepairguide.com/ for repair electronic commodities