Hobbybotics will be the Electrical Engineering Community (EEWeb) featured site of the day on Friday 22 February, 2013. I have been to the site on numerous occasions but was not aware of the user engineering blog section. there is a lot of good resources available for experienced engineers and hobbyist alike. EEWeb also provides a free circuit simulation tool know as PartSim.
A plus for PartSim is the integrated Bill Of Materials (B.O.M) that allows one to assign Digikey part numbers to their designs. I’ll definitely add the site to my “Daily View List” and give the circuit simulator a whirl. Hey, it might save me from some of the design mistakes I tend to discover after I have already sent board files off to be produced.