Found a good tilt sensor

[robonutt]

This looks like it should work fine with robonova, scroll down page to see tilt sensor? Unless anyone thinks otherwise,,
http://www.active-robots.com/products/s ... harp.shtml

[Bullit]

Digikey.com has a number of these such as 425-1968-5-ND $1.95
Since its a switch you may be able to wire it up so that you only need one port to read it.

[robonutt]

Hmmm, anybody tried either of these yet?

[XenoEvil]

I built my own using a peice of heat shrink tubing, a ball bearing and some copper wire.

It works well enough, but for the price of the one listed above it hardly seems worth the effort.

I expect it will work fine with a few resistors to create a potential divider to feed the analog port.