I have a TI-84 keypad for the TI-Nspire calculator and I thought it might be interesting to use it in a project as a button matrix. The connector looks like this:
Unfortunately the edge connector has a weird pin spacing - it's a little less than 1.4mm. I can't find any suitable connectors on DigiKey, Mouser, or anywhere else.
How can I connect to this board? I could of course just solder wires to each pin but I would like to avoid that if possible.