I need a linear actuator for my thesis project. I need to implement a robot eyeball system with 'tendons'. the actuators from Firgelli.com would be perfect, the only problem being that they cost about $60 each! Is there a much cheaper alternative? Or is there a way to convert a standard servo to linear motion?
Somebody told me to check out old 3.5 Floppy drives cause they have a linear mechanism of sorts? Are there any other 'scrapyard' type devices where i can salvage a linear servo or actuator?