I’m here looking to learn how to program boards for my vending machine company. I mostly do amusement machines and currently trying to make a change machine board. I’m also trying to interface with another board I have that utilizes MDB to be able to connect a credit card reader.

I've worked the embedded field for decades but would never make my own MDB board or software. I'd integrate such with say a hat for a Rasberry PI from http://www.waferlife.com/en/MDB2PC-PC2MDB.html

Maybe you have a lot more time than most and want to do this from scratch?

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