Operating Temperature for the H7 and H7 Plus?

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tcontrada
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Operating Temperature for the H7 and H7 Plus?

Postby tcontrada » Wed Nov 25, 2020 4:49 pm

What is the ambient operating temperature for these devices?
I have an application that might operate at -10 deg F

Thanks...
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kwagyeman
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Re: Operating Temperature for the H7 and H7 Plus?

Postby kwagyeman » Wed Nov 25, 2020 4:53 pm

The specs are on the product page. Assuming no condensation you should be able to do -10F
Nyamekye,
tcontrada
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Re: Operating Temperature for the H7 and H7 Plus?

Postby tcontrada » Sun Nov 29, 2020 12:18 pm

OK, I am a bit concerned about having the micro SD card at the low temperature as well.
I wish there was a way to include the TF file on the PCB rather than on the SD card.
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kwagyeman
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Re: Operating Temperature for the H7 and H7 Plus?

Postby kwagyeman » Sun Nov 29, 2020 1:45 pm

That would be the H7 Plus. It has Quad SPI flash for this.
Nyamekye,
NoBearSnack
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Re: Operating Temperature for the H7 and H7 Plus?

Postby NoBearSnack » Thu Dec 24, 2020 5:29 pm

What happens to the H7 or H7 plus if the weather gets colder than their operating temperature (like -20F)? Does the unit just shut down until it warms up? Or would I need to code something in so that it uses lepton temps to know when it's getting too cold and to shut the unit down through code to prevent damage?
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kwagyeman
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Re: Operating Temperature for the H7 and H7 Plus?

Postby kwagyeman » Fri Dec 25, 2020 3:01 pm

I have no idea. If the STM32 gets too cold you just have hold time issues in the logic circuits where they run faster than the flip flop hold times causing the chip to do incorrect things. As for the FLIR. It probably just goes out of a range that it gives valid readings.

To be clear, you should look at the component datasheets and then not use the device in a temperature lower than the minimum temp of all parts.
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NoBearSnack
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Re: Operating Temperature for the H7 and H7 Plus?

Postby NoBearSnack » Fri Dec 25, 2020 6:22 pm

Answering questions on Christmas, that's some dedication! Happy holidays to you guys.

I will plan on having something measure outside temperature and stop power to the unit when it hits -10F or so. Then supply power back when the temp rises. Bears SHOULD be asleep at these temps anyway.

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