Hey everyone, I just stumbled upon this site and I had to sign up right away. I have a little self-taught knowledge of electronics and circuits. Most of my interest came from doing car wiring. Anyways, really quickly... I am wanting to put together an alarm siren (for fun really) and I was wondering to play around with different tones and pitches... Maybe someone has a link more specific to this or something? I took apart one of the sirens that changes tones from like a police siren to everything else and I would like to put together something like that. Anyways, time for bed. Sorry for being so quick. Later