Would a simple circut work for a mod (ie. Battery + to switch to atty to atty to battery -)? Actually I guess I should ask is when is a MOSFET or resistors needed? I know these mechanical mods don't use them. Should I? I am electronically ......ed and there isn't a single electronics crash course source of info pertaning to e cigs anywhere. Could sombody (if they don't mind) post some generic schematics and general knowledge info needed to accomplish making these mods? I want to start producing my own but I don't know what is needed for a minimalist mod. Maybe, just maybe, battery, switch, led. Thanks for all the help I can get. I know a lot of you are very knowledgable and just need some beginners circutry to make my own line of mods.