[sdiy] help me not electrocute my friend real quick -

[Magnus Danielson]

Horton skrev:
> I'm about to build my friend a contact mic. I found instructions here
> - http://brokenpants.com/?page_id=94 - and I have a few spare piezo
> elements hanging around, so I figure it's a quick job, no problem.
> 
> However, she specifically wants to freeze this mic in ice and use it
> to record the sound of the ice cracking as it melts. I figure I'll
> just dip the entire piezo end in plasti-dip, let it dry, and she's
> good...waterproof. Will that be fine? I have no idea what she'll be
> plugging it into on her end, but whatever it is, it's coming off of
> wall power and not batteries.

It will probably work just fine. I was more concerned that surrouding it 
in plastic would make it hard for it to sense the lower frequencies as 
it senses diffrential in pressure... but it's worth a try and she is 
probably after the higher frequenices anyway.

I even have a hard time seeing that she will be electrocuted. Of all the 
hints we have on that subject this is a very ineffective one so I think 
she will be safe. Ground rule here is... can she safely touch the 
conductors now then she should be able to do it with this tranducer 
hooked up as it only extends the electrical connection.

Cheers,
Magnus