It is a comprised of four main parts: 3 in the controller and the refule pump. The controller has a lower layer where the power supply, PIC32 and XBee module boards are attached. Then, a connecting structural layer which can have any shape. Lastly, a top layer where the power button, joysticks, servo, potentiometer and indicator LEDs are attached.
The bottom plate has oversized m3 holes for heat set inserts for the the PIC32 and power supply boards, as well as for connecting to the intermediate plate. Then, for the battery and the XBee board we used walls to have a press fit on them. The intermediate plate has a large clearance hole to connect the SNAP to program the PIC32 and take out any external wires (for TeraTerm and the refuel/pump signal).
We would also like to add a special thanks to the Lab64 community for tolerating us living in there for 3 more weeks :)