[RonnieS]

Something that you will mostly likely/should encounter this season is with the new control system. The new motor controllers(talon and victor) have your power, ground, and output are pre-attached inside the sealed unit. Those wires are minimally short so you will want them close to you PDB. Make sure you have room on your belly pan/electrical board for those two things to be relatively close. Things like gearboxes on a narrow chassis could become problematic.

This is all part of your extensive planning, which is the single most important part. Do not get ahead of yourself. Make sure you have a spot for each component required for your entire robot and its systems. Don't just build an off-season drive train. If you can, experiment with other common FRC mechanisms(wheeled shooters, grippers, rollers, linkages, linear elevators,etc.)
-Ronnie.