Building a Linux powered coffee roaster
Channel: Linux.conf.au 2011 -- Brisbane, Australia
Date: 2014-11-23

Presenter(s): Andrew Tridgell
URL: http://2011.linux.conf.au/programme/schedule/view_talk/95

Penguin powered coffee!

This talk will describe how Paul Mackerras and myself built a Linux
powered coffee roaster. The core of the roaster is a well known 'Corretto' roaster, but with the addition of a PIC based power control circuit attached to a Linux laptop running a python based control program.

During the talk I will demonstrate the roaster, and describe how the various pieces were put together. I'll also sneak in one of my favorite topics, protocol analysis, by describing how to work out the protocol to talk to the USB connected digital multimeter that is used to monitor the thermocouple in the roaster. The techniques used are applicable to the problem of writing device drivers for a wide range of undocumented devices.

After the talk we'll brew up some of the resulting roasted beans and see how it tastes!


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