No anlogReads() or writes, i do believe thats around 490hz or some such thing. I had them in there but took them out on an earlier version. I got frustrated and cut the base of transistor to speaker, effectively muting the whole thing. Problem is, it was designed to make noise. Calls to beep(x,y) would make a sound of x hertz and y loops duration, but the function was gutted for diagnostic purposes.
UPDATE: I cut line from PIR and it still was squealing, I then figure it's doing it when it is lighting an LED through a 220ohm restistor, as if the squealing on pin A1 is "pain" of having to drive a 20ma or so load. Sound is about 700-1000Hz, undulating.
Thanks... its a curious little problem.
332 lines.... it won't let me post the code!!! Too long...