It has been designed to attach other components such as servos, LEDs, push buttons, a buzzer, and other sensors included in the product "Mi primer kit de robotica" ("My first robotics kit") distributed by bq.Build InstructionsSee the attached pdf (in Spanish). Pictures are clear enough to follow the steps even if you do not understand Spanish.Example of useAttached you will find a simple Arduino program for following a line.DisclaimerThis thing and all other published material cannot be considered as a final product of bq and bq takes no responsibility of its use.It must be considered as an experimental and early released product developed by the Innovation and Robotics Department staff with the intention to share it and test it as soon as possible within the community.Final releases will be published on http://bq.com