Servo Placement and Linkage

RoboRyan

I am trying to use a BASIC stamp to control a servo that will cause a typical office chair to turn (swivel). I have attached an image of a similar chair to help visualize what I want to do. So far I can control the servo just fine, but I am having a hard time figuring out how to hook the servo to the chair. It would be nice to get atleast 90 degrees of turn, but 160 is preferable.

Naturally I will not be turning the chair with anyone in it - I am actually using this as a basis to mount other things on the chair/stool. It comes with swivel and elevation control right out of the box (and since I was able to get it basically free at a garage sell it has a very good price ).


Thanks!

Franklin

I doubt a standard servo will be powerful enough to turn the stool. A large high torque servo might work but at that price I would go to a dc motor or a large stepper motor. As for the connection I'd use a chain and sprocket system.

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- Stephen

Tim-M

RoboRyan,

·· Take a look at these servo gear boxes from ServoCity.com for more·torque and travel.

http://www.servocity.com/html/servo_power_gearboxes.html

or

http://www.servocity.com/html/spg785_gearbox.html

Many other great servo accessories too.

Tim