Olin Lathrop wrote: >> And I found over the years that at least for me, it >> is a lot more fun in the beginning to follow a cookbook recipe, > > It was always completely opposite for me. There was no fun in duplicating > something someone else did. Didn't you just describe how you "invented" a switching power supply, and power supply decoupling? This sounds an awful lot like reinventing the wheel. What I said was that you can build upon what others have already done, and as a result build something new. Various people at various times called it "standing on the shoulders of giants", "learning from other people's experience", etc. Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist