Add operating temperatures about helium-guides HOT 12 CLOSED

Crystal is -40 to 85 also
Inductor -25 to 85
buck converter -40 to 125
Schottky -55 to +125
Eth connector -40 to 85

So yeah basically -20 to 70 is fine to suggest IMO. Could say -25 to 80 if we wanna be bold :-P

from helium-guides.

Indoor currently says 20 to 30 degrees C - which is the recommended ambient temperature range but it is unclear (also I think we should say 10 to 30 degrees C recommended.

We should also add a "absolute maximum / minimum operating temp" based on the chipsets etc

https://github.com/NebraLtd/Helium-Guides/blob/main/docs/indoor-hotspot/overview.md
https://helium.nebra.com/indoor-hotspot/overview

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From cm3+ datasheet https://www.raspberrypi.org/documentation/hardware/computemodule/datasheets/rpi_DATA_CM3plus_1p0.pdf

For the other bits it will need @ryanteck

from helium-guides.

Lora module -40~+85°C(Industrial Grade)
LoRa_GL5712_Product Brief.pdf

from helium-guides.

Off the top of my head the RPi one is the lowest @shawaj so I think if we go for that for now that should be a good rule of thumb.

from helium-guides.

@ryanteck that's what I thought as I remember we went mostly for industrial -40 to 85

from helium-guides.

Yeah, I think saying -20 to +70 would be a good range to say due to it being sealed inside the case.

from helium-guides.

So none of the networking components have lower ratings?

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The Lora side is -40 to +85,

Just checked the Ethernet circuitry and that's the same too.

I haven't checked every single component but I think it was the compute module had the smallest range. So decreasing it that bit more should cover it fine.

Still need to look into it slightly more.

from helium-guides.

USB / Ethernet HUB chip for reference https://www.mouser.co.uk/datasheet/2/146/xr22800-1661675.pdf

from helium-guides.

We should also add a "absolute maximum / minimum operating temp" based on the chipsets etc

Which chipset did we need to look at? Compute module or Lora concentrator?

from helium-guides.

Added Rated Ambient Temperature as -25-80oC - 8d6fa87

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