unexpected coffee: a dive into industrial coffee machines
08-16, 15:00–15:45 (Europe/Berlin), Bits & Bäume
Language: English

Last year, an industrial coffee vending machine with broken power electronics arrived at Metalab. 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.

A bit more than a year ago, in early summer of 2022, someone contacted us at the Metalab Hackspace 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! Even if we couldn't repair the original electronics it would still serve as a good base to build a cocktail bot for Roboexotica, the festival for Cocktailrobotics. So roughly a month later the machine arrived at Metalab.
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. There is also the final question: does it run Doom?

We will talk about:
- how these machines typically work mechanically
- why industrial/office coffee vending machines taste like they do
- what specifically failed in the electronics for this machine and how to debug this
- and a few insights in the electronics and software setup of this vendor.
- why RFC2324 might need an extension for soup

If everything goes well we'll bring the machine to camp and probably to the talk.

Content Notes

We'll talk a bit about electronics, coffee, (partly non-vegan) vending toppings, interesting software design, mechanics and cleaning of a large coffee machine.

Hetti is an IT Security Expert based in Vienna and part of the finest Viennese Hackspace Metalab.

During day he is breaking IT infrastructure for a living and at night he works on fun hacking projects and deals with state-of-the-art legacy infrastructure.

He enjoys traveling to community based IT (Security) Conferences and Camps.
You can also find him at the Chaos Computer Club Vienna (C3W) where he is mainly involved with Chaos Macht Schule (CmS).
On some weekends he is hunting flags with the successful academic CTF Team We_0wn_Y0u.

Clemens, member of the Viennese hackspace Metalab.at, is an embedded linux engineer with a background in community wireless networks, electrical engineering.