MOC-9727 Kinetic Base for BB-8

I lately made a module, which repeatedly switches a pneumatic valve, and utilized it to LEGO 75187 BB-8.

The entrance hatch is closed by gravity; subsequently, the BB-8 must be tilted a bit backward. If the hatch will get caught when closing, strive adjusting the angle of the trans blue spear brick (27257).

The elements record comprises the extra elements solely, and most of them, together with pneumatic elements, have been taken from LEGO 42053 Volvo EW 160E.