This is a schematic layout of the parts, to clearly show all the connections, and not representative of the actual placement of all the parts or wires. We’ll detail that in the following pages.

The Pro Trinket, charger, and IR sensor will be at one end of the staff, and the switch will be at the other end.  

You'll want to place the battery in the middle, since it's the heaviest part.  Placing it at one end would create an unbalanced spin to your staff, so keeping it in the center works best.