?Is there anyone on this forum that could help, either building the boards
. Does this mean hundreds of sensors per rPi or just a few sensors each per hundreds of rPies? [I am assuming the latter, so therefor you are eventually looking for hundreds of sensor boards with their individual 'containers' and maybe their own power distributions.] What distances do the sensors need to be from their controlling point(s) [might have problems with noise and need added filtering]? Do the sensors need to be individually removable [for calibration or replacement] or is the entire board removable [which might require higher quality sockets and connectors]? What kind of speeds do you require in the readings, etc.?, etc.as eventually we will need to deploy several hundred sensors
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...have numerous stories about their[PI] behavior outdoors.
In general, the Pi2/3 should avoid plastic enclosures in industrial settings. Or you too will discover the EMI/EMC profile from the Ethernet chip-set will just barely pass FCC+CE, and fail most other ISO testing. The new pi3 does use a metal can on the SoC, but the other chips should at minimum still use a heat-sink glued on with RTV silicone (don't trust the 3M thermal tape at all temperatures).Heater wrote: ↑Wed Jun 27, 2018 6:44 amThey are in NEMA enclosures in the baking California sunshine.
A few year back I had one outdoor PI system fail. Turned out not to be a PI problem but the SD card went on fire. Almost literally, the SD got hot and smoked when I got it back on the bench and powered it up.
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