I still believe the harsh and sarcastic comments some of you are complaining about, aren't meant to be abusive or hateful. He's making a point, and giving incentive to put a little more effort into solving your own problems, before asking. It's not really an uncommon teaching method, it reduces dependency. Wouldn't it be so nice to post your requirements, and receive a completed project by the end of the day? Why bother using a search engine, following dozens of links. Or crack open a few dusty books, and do a little math? Asking for help shouldn't be the first course of action for most of these people, and they should post something for the efforts they made on their own before asking. If you expect the easy answers, expect to pay the price of a few harsh words and a little sarcasm. Seems like a fair exchange to me.
Audioguru doesn't respond to every thread, nor are his posts always harsh when he offers help. It depends on the content of the request. How often do you see any of his 'offensive' comments, when the first post contains a schematic or some reference? Maybe I was just fortunate to have a few really good teachers in my life, that just didn't force me to memorize material, but instead taught me how to think and learn.
I really can't believe this thread has gone on so long. This site has a large data base of past posts to search through, but we get people asking about many of the same topics over, and over again. Some of my favorites; shockers, making PCBs at home, flashing lights, ultrasonic dog repeller, bench power supply, battery charger... Perhaps there should be sort of an index menu, where we could put links to the threads that cover a topic well, or a completed project.
Audioguru is probably the most helpful person on board here, you guys just don't understand just how much. Some might be a little too subtle to pick up on, but it sinks in eventually. Once you learn how to teach yourself, you really have few limits. No incentive equals no effort.