Make It Yourself is an exhibition of inventive Arduino and DIY electronic-circuitry projects to accompany the major solo exhibition Recorders by Rafael Lozano-Hemmer at Manchester Art Gallery between 18 September 2010 and 30 January 2011.
Van Wielink initially got the idea of turning an old popcorn roaster into a coffee bean roaster off the internet, and whilst the coffee beans roasted successfully (and tasted really nice!) it was a very laborious process with a lot of room for variation as the temperature needed to be controlled by hand. As a result, van Wielink decided to create a new version of the device using arduino. The latest version of the device now measures the temperature of the beans and adjusts the temperature by increasing or decreasing the speed of the ventilator that blows hot air through the beans. The controller then follows a preset temperature profile and automatically cools the beans at the end.
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