About this 3D model

(Note: I made this when I was like 13, it probably isn't very possible to actually make this work. Consider it more of a proof of concept) This is a haunted coffin shaped candy holder. The lid automatically opens when a person approaches. Here is the technology to make it haunted: NEMA 8 stepper motor (this is the motor that fits on the mount) Arduino Pro mini Adafruit motor controller board Adafruit PIR proximity motion sensor Check out this object on TinkerCad