/diy/ - Do It Yourself

>>613094
you will want to learn about induction. perhaps start off with basic electromagnets. you could put one coil of wire on each end of a horizontal track with a ball bearing on it. energize the coils to attract or repel by reversing the polarity of the current.

then you can push and pull the bearing along the track. once you have that figured out you need to work out using multiple coils and timing their firing sequence so that they repulse and attract at the right time to propel the object.