A bit more than two years ago, someone contacted our Hackspace asking if we would be interested in an electronically defective, but probably repairable industrial coffee vending machine. An industrial coffee machine with a touchscreen and cocoa toppings? No idea where we would find enough room for it or if it would actually be used, but of course we'd be interested!
After a few months of collecting (additional) dust and annoying a few members, we started the quest to get this machine back to work and to explore the (questionable) world of industrial coffee vending legacy, from hardware, over electronics to software architecture.
This is a talk about how we repaired the machine, how these machines usually work, a dive into legacy software and electronics setups, and why those coffee vending machines taste like they do.
Last but not least, we will discuss how we started to reverse engineer the internal system communication and if we would award a hackvalue of over 9000 for this type of machines.
There is also the final question: does it run Doom?