Search Results (Searched for: raspberry)
- rdtsc
03 Feb 2025 16:38
Replied by rdtsc on topic Operating computers in the cold
Operating computers in the cold
Category: Computers and Hardware
Desiccant sounds good at first, but these do "fill up" quickly. I have dozens of these bags in a 3D printer filament storage container. Even though it is completely sealed (with a gasket), all those bags are only good for about a year. Then they all must be baked at 110degC for 8-12h to rejuvenate them; moisture is insidious.
If you try this, place a quality hygrometer inside. Will likely find that the humidity stays low for only a month or so, even with a good seal.
The moisture alone probably is not causing the inability to start. The way most computers and power supplies are designed, just is not favorable to low temperatures. Very few are, because that is not a typical use case for a computer. Section 5.6 of the RaspberryPi4B says that is good down to 0degC - but then must consider whatever power supply is used for it. The characteristics of semiconducting materials changes as temperature changes, so functionality at low temps has to be something designed into it. Once had a quirky home computer that "complained" at 19degC and refused to run at 18.
If it were my machine, I'd put a heater (like a hair dryer on low setting) near the computer, along with a thermostat. Set the thermostat to say 20degC, and just let it warm up until the thermostat starts cycling. Of course need to be careful nothing can get too hot. Warming should take an hour or more - rushing it is not advised; the whole computer needs to warm up slowly. Then run the machine. That may be easier than re-engineering a quirky power supply or replacing the computer. Unless anyone knows of an industrial-rated computer (and power supply.)
If you try this, place a quality hygrometer inside. Will likely find that the humidity stays low for only a month or so, even with a good seal.
The moisture alone probably is not causing the inability to start. The way most computers and power supplies are designed, just is not favorable to low temperatures. Very few are, because that is not a typical use case for a computer. Section 5.6 of the RaspberryPi4B says that is good down to 0degC - but then must consider whatever power supply is used for it. The characteristics of semiconducting materials changes as temperature changes, so functionality at low temps has to be something designed into it. Once had a quirky home computer that "complained" at 19degC and refused to run at 18.
If it were my machine, I'd put a heater (like a hair dryer on low setting) near the computer, along with a thermostat. Set the thermostat to say 20degC, and just let it warm up until the thermostat starts cycling. Of course need to be careful nothing can get too hot. Warming should take an hour or more - rushing it is not advised; the whole computer needs to warm up slowly. Then run the machine. That may be easier than re-engineering a quirky power supply or replacing the computer. Unless anyone knows of an industrial-rated computer (and power supply.)
- Taelman
- Taelman
01 Feb 2025 23:25
- tommylight
01 Feb 2025 22:30
Thank you.
Replied by tommylight on topic Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!
Linuxcnc & the Raspberry Pi (4 & 5) Official Images Only!!!
Category: Installing LinuxCNC
Done.Pinium it
Thank you.
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