PCB Holders

There are two of each PCB holders in each robot, they are connected on the top plate and are used to hold the topboard, bottomboard and backboard PCBs. The back PCB holders' top hole is also used to connect with the robot's cap. They are 3D printed with PLA and all their holes are 3D printed. Having 3D printed holes is useful because it is easy to make and it works well. However, if screws are often put in and out of these holes they wear off quickly and lose their thread. Therefore, such holes should only be used if, once screws are put in, they are never taken out, which is the case for the connection between the PCB holders and the top plate, but not for the connection with the robot's cap…