Multipurpose Schematics and PCB Designs The Schematics and PCB Designs of the Electronic Circuits have been done such that the PCBs are multipurpose and just with the minute change in the number of components mounted on the PCB and some change in the interconnections between the PCBs, they could be used for all the robots. In fact the PCBs are made such that in most of the general robotic applications these PCBs could be used.