How to buy or make a shock proof enclosure?

[ionymous]

I want put a small microcontroller, digital compass pcb, and batteries in a project enclosure, and then attach it to my mountain bike.
I will likely mount it within the bike frame's main triangle on the tube that the seat post slides into.

I ride pretty aggressively on the trails. Some hopping, drops, and I take some falls occasionally.

How can I protect the electronics?
Are there cases that are made for this kind of abuse? Probably too expensive. Can I make my own?
Are there some kind of rubberized standoffs? Can I make my own?

What other ideas do you have?

Thanks for any help
Ion

[WhatULive4]

I would probably try to suspend everything inside an enclosure with rubber bands. Should be able to take quite a beating I would think.

[mako321]

fill it with floam!

[ionymous]

I would probably try to suspend everything inside an enclosure with rubber bands. Should be able to take quite a beating I would think.

Neat idea. I think it would be quite a feat of engineering to suspend electronics in an enclosure this way. I imagine the distance from the electronics to the enclosure walls would have to be relatively big. And the rubber bands would have to be tensioned just right and in all 3 dimensions.

fill it with floam!

At first I thought you just meant foam and made a typo. Then I looked up floam. I guess I skip too many commercials. I don't know anything about that stuff. Looks like it might be messy and get into the nooks and crannies of my circuit.
But foam (not floam) seems like a good idea.

Thanks
Ion

[Rekarp]

Actually one of this semesters senior projects in the ECE department was a GPS unit for bikes. You strapped it to your bike and it would upload the info via the campus wide wifi to a server to track your speed and movement to help design bike routes and crap.

Small water proof Pelican Box and foam was the protection. Worked great for them.

Looked like this one

http://www.pelican.com/cases_detail.php?Case=1010" onclick="window.open(this.href);return false;