On Mon, Oct 27, 2008 at 5:55 PM, John Bange <jbange@gmail.com> wrote:

>> I made a
>> metal box and put strips of foam on the bottom to electrically
>> insulate the bottom of the PBC. Maybe it's dampening the sound of the
>> buzzer.
>
> Looking at the spare speedo I keep next to my recliner (my wife thinks
> it's GREAT that I have a pile of car parts under the side table!) it
> looks like it's just a classic make-break coil driven buzzer in there.
> I betcha it depends a LOT on being snapped onto a rattly plastic
> housing.

Heh heh. Yah I bet she does! Wow. And I thought I was the only one to
keep spare parts in strange places. Uh, like the two or 3 on my desk
right now...  ;^)

Just finished installing my
Dynamic-Oil-pressure-Warning-Unit-In-A-Box. Took out the foam bits,
put tape down and plastic stand-offs between the PCB and the case.
Having it vibrate against some the housing made it louder for sure.

Neil.