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Topic: motor + PING))) = erratic PING))) results (Read 1 time) previous topic - next topic

Grumpy_Mike

Put them close to the load not the power supply. You could also try an inductor in a Pye circuit like the last diagram on this page:-
http://www.thebox.myzen.co.uk/Tutorial/De-coupling.html

Also try a star ground. That is connecting all the grounds together at one point instead of chaining them. Try and keep the wiring neat and away from the source of interference, that is your motor. You need caps on the motor and the chips.

UnaClocker

I'd try running the leads to the motor through a ferrite bead. Go through the bead, loop back around and go through again, then back to the motor (or power source, depending on the side of the bead). Those are supposed to help with interference issues.
Brian from Tacoma, WA
Arduino evangelist - since Dec, 2010.

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