Magnets allowed?¿?

[Rickertsen2]

Originally Posted by josh_johnson

The problem with magnets is not that they can interfere with the radio modems, but that a changing magnetic field will create a current flow through wire I don't know how much current this would induce, but it could possibly be enough to mess with the pwm signals or other electronics of other robots. You may have to be careful to avoid this if you use a powerful magnet.

Even with VERY powerful magnets, it would be VERY difficult to induce enough voltage in anything to cause interference. It would take ALOT of gauss. and remember 1/x^2 rule. Anybody care to work out some Emag? Maxwell's equations Mmmmm...

[josh_johnson]

Originally Posted by Rickertsen2

Even with VERY powerful magnets, it would be VERY difficult to induce enough voltage in anything to cause interference. It would take ALOT of gauss. and remember 1/x^2 rule. Anybody care to work out some Emag? Maxwell's equations Mmmmm...

I'm not sure about the exact amount induced, but I did have problems with using my cell phone when i got within about 6 in. to a foot of a magnet that came from an old hard drive. It did not cause problems with interference, but caused my phone to reset itself.

You probably wouldn't interfere with another robot from several feet away, but depending on the location of the magnet, it might cause problems when the robots are very close to each other.