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  #151  
Old 06-28-2019, 06:49 PM
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Default Re: Raspberry Pi discussion

Uh oh, now I feel I have to keep up ... :grin:
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  #152  
Old 07-02-2019, 05:28 PM
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Default Re: Raspberry Pi discussion

It arrived today. Wow! This thing runs hot! Like too hot to keep your finger on the main chips for more than a moment. You can monitor the temperature of the processor with a built-in command - it idles at over 60 C, and when pressed quickly heats up to 80 C when it begins to throttle back its operating speed to prevent further temperature rises. Even the USB and network connectors get hot - I suppose the board's been designed so that they act as a primitive kind of heat sink.

I've ordered some cheap (one pound each) tiny five-volt fans from China, and once they arrive - probably about three weeks from now - I'll fit one to the new Pi. In the meantime it will run without a fan and without a case - and I'll be careful if I need to touch it for any reason.

It does scoot along at an impressive lick. I would be able to tolerate using it as my main computer for most tasks.
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  #153  
Old 07-02-2019, 06:13 PM
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Default Re: Raspberry Pi discussion

Heat is the main problem with high-powered computing.

Immerse it in a non-conductive liquid. And obviously pump it through a radiator.

The web suggests some non-conductive liquids:
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1. Molecular liquids like acetone and benzene are non conducting.

2. Deionized water is nonconducting. However, water with electrolytes dissolved in it are conducting.

3. Lava and magma are nonconducting.
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  #154  
Old 07-02-2019, 07:28 PM
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Default Re: Raspberry Pi discussion

I don't know how effective lava and magma would be as a heat sink though.
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  #155  
Old 07-02-2019, 09:09 PM
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Default Re: Raspberry Pi discussion

Molten rock is actually quite conductive, like sea water or semiconductors.
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  #156  
Old 07-03-2019, 02:44 AM
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Default Re: Raspberry Pi discussion

Quote:
Originally Posted by Ensign Steve View Post
I don't know how effective lava and magma would be as a heat sink though.
you have to supercool them first :duh:
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  #157  
Old 07-05-2019, 09:19 PM
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Default Re: Raspberry Pi discussion

The new Pi4 also prompted the company to update to the latest stable version of Debian. (Debian Buster, or 10 if you like numbers).

My work project releases packages for Raspbian, and so of course we have a dependency on a library that's been removed in Buster. :shinything:
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