Decent Espresso is a company based in Hong Kong, San Francisco and Seattle.
They build espresso machines that are controlled from a touch-screen tablet.
Users have control over temperature and pressure. Data are recorded along with parameters such as flow rate, ambient humidity, and the actual temperature in the grouphead
(using a thermo probe). So custom results can be replicated.
[http://www.home-barista.com/forums/userpix/22105_screen_shot_2017-04-04_at_13.jpg]
[https://i.ytimg.com/vi/1Xqqb3E3EvA/hqdefault.jpg]
The tablet software is developed with Tcl/Tk and [AndroWish] with Bluetooth (See here [http://www.home-barista.com/marketplace/decent-espresso-machine-now-available-t43925-380.html]).
There was an [Offering TCL Jobs] about this topics in October 2016.
An overview of how Tcl/Tk is used by Decent Espresso was presented at the EuroTcl conference:
[https://www.youtube.com/watch?v=Ey30Cg1fM0Q]
To see the user interface, watch this YouTube video [https://www.youtube.com/watch?v=gzyzaiABcQY]
The source code the de1app is available [https://github.com/decentespresso/de1app/] and executable versions using Androwish can be downloaded [https://decentespresso.com/downloads]
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