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Platinum Member
Join Date: Jul 2001
Location: Leave the gun. Take the cannoli.
Posts: 21,375
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No. You use a common ground so they are at the same zero. If the grounds are not connected, the input circuit for the servo has no reference for the signal from the arduino.
You can also run servo at higher voltage for more power and speed. Most are rated for 6volts, some more.
Last edited by dad911; 09-22-2013 at 08:02 AM..
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