Servo Pulse Tester.
http://www.uoguelph.ca/~antoon/gadgets/servo3.htm
http://home.worldonline.dk/~cfmcomp/pic/servo.htm
introduction to RC servo technology and some ideas for servo modifications
http://www.repairfaq.org/filipg/RC/F_Servo101.html
simple RC servo motor tester or controller based on CD4001. A potentiometer controls the servo position
http://www.tuug.fi/~isaarine/electronics/servo-test/
may be used instead of servo and mechanical micro switch
http://www.tuug.fi/~isaarine/electronics/rc-switch/
http://www.colinmackenzie.net/techlib/articles/ServoSecureMounting.html
Servo Pulse Generator.
http://www.uoguelph.ca/~antoon/gadgets/servo2.htm
http://www.vision.net.au/~timotsc/servlead.gif