Lamp shade circle square

A lamp shade I designed because I wanted a lamp shade where I can build in a small arduino and an ultrasonic sensor. My plan is that you should be able to turn the lamp on and off by moving your hand under it.

It is designed to be used with E27 sockets. The hole is 40 mm diameter.

Print with 2 mm bottom and with "Spiralize the outer contour" ON and "Solid infill top" OFF in Cura. You find them under Expert -> Open expert settings...

Print with a shell thickness that equals your nozzle s