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Infrared Camera question
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Infrared Camera question

by alainsam on Sun Apr 04, 2021 2:58 pm

Sorry if it is not the place to ask, but if you can help me, thanks:
My project is as follow:
I have a square metal plate 10*10 cm, which is at about +10 deg. C above the room temperature (~25C)
Randomly in time and space appear high-temperature micro spots on the metal surface.
I would like to record the number of spots above a certain brightness, that I can eventually set, in the function of time.
Which Adafruit camera could I use for this project?

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Re: Infrared Camera question

by adafruit_support_carter on Mon Apr 05, 2021 1:53 pm

What is the physical size of the micro spot?

Is the metal plate bare or is it painted?

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Re: Infrared Camera question

by alainsam on Mon Apr 05, 2021 2:44 pm

This is an experiment,I do not know yet how big or small will be exactly the spots, probably about 1mm+. It is bare-metal, not very reflective, no paint.

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Re: Infrared Camera question

by adafruit_support_carter on Mon Apr 05, 2021 2:51 pm

You could try something like this:
https://www.adafruit.com/product/4407

10 cm / 24 pixels = ~ 4mm per pixel

But maybe thermal diffusion would make the spot actually bigger?

Also, you'll most likely want to paint or somehow treat the surface, if possible. A bare metal surface will be mostly reflective, so will act more like a mirror.

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Re: Infrared Camera question

by alainsam on Mon Apr 05, 2021 3:29 pm

Thanks, I had a quick look at the product on the board, it seems that it can work. Which Arduino with Qt do you advise to get with it?
Also, concerning the paint what do you use, I expect black paint with good thermal conduction?

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Re: Infrared Camera question

by adafruit_support_carter on Mon Apr 05, 2021 3:49 pm

Up to you on which Arduino board. Depends a lot on your intended use. There are many options.

Black paint would be fine. Doesn't need to be anything special.

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Re: Infrared Camera question

by alainsam on Mon Apr 05, 2021 5:27 pm

Do you sell the display board shows on the camera film by the lady?

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Re: Infrared Camera question

by adafruit_support_carter on Mon Apr 05, 2021 5:35 pm

The one shown in the video on the product page?
cam_disp.jpg
cam_disp.jpg (35.93 KiB) Viewed 81 times


That's a PyBadge:
https://www.adafruit.com/product/4200
There's a sample project here:
https://learn.adafruit.com/mlx90640-the ... -recording

It's more than a display since it has a microcontroller, various buttons, etc.

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Re: Infrared Camera question

by alainsam on Mon Apr 05, 2021 5:54 pm

Yes that what I was referring to, it seems like an incredible product, Now I see that with it and the camera I can see the spots and count them simultaneously, am I right?

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Re: Infrared Camera question

by adafruit_support_carter on Mon Apr 05, 2021 6:26 pm

Look through that guide for an example of what can be done with that hardware combo.

But the MLX90640 could be paired with many other options, including a Raspberry Pi. What's best depends on you project specifics.

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Re: Infrared Camera question

by alainsam on Mon Apr 05, 2021 7:25 pm

OK, Do you know when the MLX90640 will be available?
Thanks

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Re: Infrared Camera question

by adafruit_support_carter on Mon Apr 05, 2021 9:15 pm

Unfortunately not, sorry. There's just too much beyond Adafruit's control to be able to make that prediction. That's true even in the best of times. And currently, there's a fair amount of general supply shortage on components happening. Signing up for the NOTIFY ME option on the product page is all we can suggest.

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Please be positive and constructive with your questions and comments.