3 ms·

I think PCB based designs will have a better Design for Mass Manufacturability. See the work of Carl Bugeja. https://www.youtube.com/watch?v=oa6sP-joAr8 https

• contingencies 3y ago
  This is the approach I used for my prototype (thanks to Carl!) and it does function. However, since the area is quite "edge case" (rarely developed in public), there remain challenges in balancing the electrical and control requirements with physical requirements, electromagnetic density, part selection, manufacturing process and cost.
• crote 3y ago
  At that point it might make more sense to go back to a more traditional approach. Place each "dot" on a little magnet, and use a PCB with coils in it to actuate them.