The Eternal Cold Mac OS
The Eternal Cold Mac OS
About This Mac
ColdMac is an old Apple computer that lives in my shed and tracks its own internal and external temperatures, and also hosts this webpage displaying that data. The shed this Mac lives in is very cold. It is not insulated, the door has no seal, and there are two vents in the walls. On Mac OS Mojave, it is possible to specify per application to use the external GPU. Substance Painter performances and stability may improve with this setting enabled. For more information refer to Apple documentation. To enable it: Close Substance Painter if it is already running. Due to the cosmic energy that suffuses an Eternal's body and the unbreakable mental hold they have over their physiological processes, the Eternals of Earth are effectively immortal. They live for millennia, do not fatigue from physical exertion, are immune to disease and poison, and are unaffected by environmental extremes of cold and heat.
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ColdMac is an old Apple computer that lives in my shed and tracks its own internal and external temperatures, and also hosts this webpage displaying that data.
The shed this Mac lives in is very cold. It is not insulated, the door has no seal, and there are two vents in the walls. So while there is a very limited amount of thermal protection, it's generally within 5 degrees or less of the actual outside temperature at night. During a sunny day, the shed can warm up much warmer than the outside temp.
This Mac is a 2009 iMac. It is loaded with internal thermal sensors. In addition to that, I use a USB thermometer to get ambient readings inside the shed. In total there are 7 values I picked as the most interesting. They get logged, displayed and graphed.
The design of the system can be broken down into two halves. A simple script runs every 10 seconds that gets readings from all of the thermal sensors, and loads them into a database. On the other side, this web page pulls that data out of the database and displays it accordingly, showing the current readings, a graph of the last 24 hours, and a graph of the daily high and low for the whole season. There is a lot of javascript that makes the dynamic content happen. But in the end, the database is what makes this possible.
The Eternal Cold Mac Os Catalina
In addition to running all web server related software, this machine plays music on loop 24 hours a day, and runs BOINC science projects at 50% CPU load.
The Eternal Cold Mac OS