2 ms·

Why not just use mechanically decoupled pins that vibrate with a smartphone vibration motor? You don't need texture if the thing vibrates.

• ta988 3y ago
  Cost and noise would make that extremely unpractical.
  • atoav 3y ago
    As opposed to the low cost texture changing material proposed? If I had to do this I'd probably look into PCB-based solenoids with compliant mechanisms. But there are already people working on that.