Quote:
Originally Posted by AdamHeard
Without knowing the exact mechanical design it's hard to give completely valid advice.
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Ok. Here's the design.
It is a chain based fourbar grabber. It is powered by 2 continuous turn servos.
Both arms are powered and move simultaneously. The potentiometer is part of the gear reduction.
Attached is a sketch.
The black object in the center is a crate.
The blue members are the C channels.
The red circles are sprockets/gears.
The sprockets that connect to the gears are mounted solidly to each beam, so that they do not spin, thus providing the fourbar motion.
The gears turn the black channels.