The Crocodile Mouth tutorial is another tutorial intended to introduce the user to the sensors which the Bioloid kits provide. In this tutorial a "Crocodile" structure is created which senses when something is between it's jaws using the sensor unit and then bites. In addition to this the servo itself is capable of sensing the difference in pressure when it has bitten down on an object and will then release. The ability of the sensor module to make sound is also introduced at this point as the device will signal that nothing has been detected for ten second by making a noise.
This is another simple introduction to the features of the Bioloid sensors and servos. These simple tutorials are important to ensure that all the features of the equipment are understood by the user so that the creation of more complex devices comes easier to the user.