So, we could use either a USB keypad or a makey makey to make a device that would let us litterally draw our own key cards. Here's how it would work:
- We disassemble a usb keyboard for it's delicious circuit board.
- We solder wires to where the key's wires go
- we solder the other ends of the wires to rows of teeth(perhaps we make them, perhaps we get them from an old ISA ribbon(we could nip off the ends to allow a card to slide through)
Though it doesn't mean anything, here's the schematic I made:
That's it for the card reader! Yeah, it's going to be that simple.
Now stay with me on this:
Here's how we make the key cards themselves. Every member will be able to make their own card.
Find something flat and non-conductive that you wouldn't mind putting through your key chain. (make sure it's light weight). How about a slab of plastic from the free bin? How about an old credit card? How about a couple peices of cardstock laminated together? The possibilities are endless!
Take the conductive ink sponsored by
DRAW either a punch card on it:
or DRAW a slidey card:
Now we're done!
So tell me what are things that can go wrong with this AND what might possibly be a solution to prevent it from happening. I don't want a lot of nay-saying at this point so give me a possible solution with any problem you find.