BlindPAD 16 Taxel EM Video

Haptic display from the BlindPAD consortium with 16 independent taxels (touchable pixels), to demonstrate EPFL’s electromagnetic actuation technology to provide graphical information to blind and visually impaired users.
We use an array of microfabricated coils to generate localized magnetic fields to move miniature magnets up and down. The magnets displace 3D printed taxels, which is what the user touches. This approach gives us large vertical displacement (over 0.5 mm) coupled with good holding force (25 mN) and a refresh time of under 1 second for the entire array.