Comment by jonahss
2 years ago
Yeah!
A few comments have mentioned being able to refresh the cards while upside down, or covered by another. Maybe my next prototype can put the contacts on the edges and have them wrap around or pass through, so they work on both sides.
That will be a bit more complexity for fabrication, but sounds like a fun project.
Would some kind of toaster-slot mechanism work? Contacts could be on the bottom edge, and with the right shape, you could have them extend a few millimeters onto the front and back, to get contacts on 3 sides.