Rotation 0 -270?

T Chap

I am sorting out the rotation of a spindle on a cnc machine for pick and place use. Typical needs are 90 and -90 rotation, and a rare 180. I really didn't want to connect stepper, belt and driver. The controller is the Prop. I considered the Parallax 180 servo which would drive off PWM, but then still have the 180 problem since it only moves 180, I need 90 -90 and 180 or total 270, with incremental adjustment if needed.

Any suggestions welcome.

Post Edited (TChapman) : 8/23/2009 7:04:25 PM GMT

T Chap

I didn't find a Parallax 360 servo, but found this one below which may be a good option.

www.acroname.com/robotics/parts/R298-1T-SERVO.html

Timmoore

Try servocity.com they have a range of servos, they will modify for 180 or 360, or thy have digital servos which can be programmed to change angle range.