Researchers have created this device using the method of sending the force per stem (Linkage) and use a servo motor driven rope to use as a driving force, and stick to a subsequent message.
Researchers have created a device by using a lever to force (Linkage), and a servo-motor-powered sling to serve as a lever to push and force transmission to the next.
The constructed this device by using the principle of force transmission shaft (Linkage) and used in the servo motor driven push rod used as a sling to transfer energy to other joints.