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Unread 19-01-2015, 10:58
BSV BSV is offline
FTC / FRC mentor
AKA: Travis
FRC #2723
 
Join Date: May 2013
Rookie Year: 2011
Location: Oklahoma City
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Re: [FTC]: dual synchronized servos or geared up winch servo?

Quote:
Originally Posted by Al Skierkiewicz View Post
BSV,
I would not be surprised if the servos do not link up. You will need some kind of mechanical device to link them together and remember that you can't simply turn one around and switch the power lead to get it to go in the other direction as you could with a motor. Some kind of spring linkage might work if they do not seem to follow each other close enough for your application.
Thanks for the info. We did order three of them to improve our chances that we could get two to act as mirror images of each other. Our previous experience is with Lego motors, and those frequently have different startup time lag and we try to find two of them that share the same lag. Of course, those are plastic gears so I expected the Karbonite ones to be better.

We are thinking that "servo2 = 255 - servo1" given that both of them start at the same (mirrored) position, and that we'd have to always make sure they are initialized properly or we will run into issues where they are fighting each other.
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