Caution note: Some of the model airplane 180 degree servos were intended=20 for landing gear retract service and cycle from one extreme to the other=20 without incremental positions. On 12/17/2013 3:43 AM, Lindy Mayfield wrote: > I found an old server motor that turns 180 degrees, and so I want to try = to use a 555 to control it. This I know is possible. --=20 John Ferrell W8CCW "It does not matter How many resources you have, If you don't know how to use them, They will not be enough" --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .