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Author Topic: Servo Over-Rotation
CSPURGEON
Newbie
Posts: 18
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Post Servo Over-Rotation
on: February 21, 2013, 00:10
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I am trying to have the "blanks" skipped, and my servo seems to be over rotating causing it to pick up the pen when it is suppose to be dropping the pen and vise versa.

Setup: Arduino Uno/ Adafruit Motor Driver Board

Can anyone assist in this?

Thanks!
sandy
Administrator
Posts: 1317
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sandy
Post Re: Servo Over-Rotation
on: February 21, 2013, 08:36
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Hey Chris, the servo should turn clockwise (looking down on the top of the servo) to push the control horn against the drawing surface, to lift the pen, and then counter-clockwise to drop it.

Looking down on the motor, I have the horn set at the 9 o'clock mark during normal drawing, then rotating to 12 o'clock when lifting the pen. It sounds like you have it set to 12 o'clock normally, then moving to 3 o'clock for a lift. So just take the control horn off and re-affix it 90 degrees counter-clockwise.

sn
constant19-
28
Newbie
Posts: 8
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Post Re: Servo Over-Rotation
on: March 14, 2014, 19:15
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Hi sandy,
When i plug in my servo, my stepper motors stops working. why is that? thanks a lot!
sandy
Administrator
Posts: 1317
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sandy
Post Re: Servo Over-Rotation
on: March 14, 2014, 20:24
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Hello, maybe some information about your machine might help - model, power supply, things like that. A careful description of what you do to make it happen. Maybe a picture of your motor and servo connections - all useful.

Also in future, please start another thread if you're moving off-topic - it just makes it a bit easier to find things again in the future!

sn
ryan13mt
Newbie
Posts: 16
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Post Re: Servo Over-Rotation
on: March 14, 2014, 21:26
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Check the jumper pin in your motor shield. Thats what mine used to do, drove me insane.
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