I have something that I want to make a continuous "meeep" noise to alert the driver he has something in use in a temporary setting. Not seeking startling/distracting volume level like a back up alarm sound. The engine would be off, or possibly idling through an OEM muffler and full pipe during this time, and I am OK with just barely being able to hear it- that is perfect in fact.
I bought a bag of a dozen of the little piezo's for making a PC motherboard but apparently I didn't know what I was dealing with, and for it to work, I need a driver signal (oscillation?) of some kind?- straight 12V just heats the "micro speaker". I am sure the secret of all this is relatively known, but I got 100+ google hits for diagnosing PC boot failures. Whether I included "hardware" or not seemed to make no difference. I tried a lot of wordings. Zilch relevant.
I will note, do have concern that sound from a PC is a one time thing. During troubleshooting, I may have this on for 2-3 minutes, and wouldn't want something that is for sure to burn out. This isn't even as much a obsessive DIY thing- if there's a product out there, I'm more than happy just buying it.
Failing that, is there any known
stand alone way to wire a conventional late model passenger car door alert chime? That would work- the late model pleasant bings- had one in a Sonata, not the early 80's GM annoying buzz which is doubtless easier.
I'm smart about a lot of things and can google a good portion of the rest, but trying to solve this minor thing is completely kicking my butt.
Help a guy out?