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gmiller123456 / ThermalCamera_MLX90640

Attempt to use a MLX90640 thermal camera as a cloud sensor
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Did you solve you weatherproof problem #2

Open ispybadguys opened 2 years ago

ispybadguys commented 2 years ago

Germanium window would work.

these look cheap

https://www.uqgoptics.com/catalogue/optical-windows/ir-windows-uv-crystals/germanium-ge-windows-uncoated-ar-ar-ar-dlc-coated/?gclid=CjwKCAiA4KaRBhBdEiwAZi1zzg7hHcfkhj1Qo58f0JHert8DDLRF2z4ZeBDgAVNlzposWNZ3LOQFTRoC6iwQAvD_BwE

gmiller123456 commented 2 years ago

A thin plastic bag seems to work fine. I haven't been able to permanently mount it outdoors yet, but it seems pretty promising.

ispybadguys commented 2 years ago

I am playing with the idea of a periscope.  I'll put the sensor facing down in a small piece of pipe and put a stainless steel mirror, I ordered on Amazon, at an angle to reflect the sky into the sensor. Glass mirrors won't work because glass absorbs to 7 to 15 micron region the sensor is using. I have the wide angle sensor so the geometry will take some messing with. I got my camera to serve a web page if you are interested.

Kurt

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On Mar 23, 2022, 3:42 PM, at 3:42 PM, gmiller123456 @.***> wrote:

A thin plastic bag seems to work fine. I haven't been able to permanently mount it outdoors yet, but it seems pretty promising.

-- Reply to this email directly or view it on GitHub: https://github.com/gmiller123456/ThermalCamera_MLX90640/issues/2#issuecomment-1076848789 You are receiving this because you authored the thread.

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gmiller123456 commented 2 years ago

Yea, I'd like to see what you have. Mine currently serves as a web page from an ESP-32, not exactly sure about the end state though, so more ideas are great.

I considered the periscope idea, but with a heavy rain and/or high winds, it'd still get wet. I'm not sure how sensitive these are to water, but I'd rather not find out.

ispybadguys commented 2 years ago

I found the perfect solution. And not too expensive.

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On Mar 24, 2022, 4:37 PM, at 4:37 PM, gmiller123456 @.***> wrote:

Yea, I'd like to see what you have. Mine currently serves as a web page from an ESP-32, not exactly sure about the end state though, so more ideas are great.

I considered the periscope idea, but with a heavy rain and/or high winds, it'd still get wet. I'm not sure how sensitive these are to water, but I'd rather not find out.

-- Reply to this email directly or view it on GitHub: https://github.com/gmiller123456/ThermalCamera_MLX90640/issues/2#issuecomment-1078447351 You are receiving this because you authored the thread.

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ispybadguys commented 2 years ago

I think this will work better

https://www.aliexpress.com/item/1005003708264377.html?spm=a2g0o.order_list.0.0.21ef1802Z79KW4 https://www.aliexpress.com/item/1005003708264377.html?spm=a2g0o.order_list.0.0.21ef1802Z79KW4

I’ll send you my code. I am sorting out an issue at the moment.

On Mar 24, 2022, at 4:37 PM, gmiller123456 @.***> wrote:

Yea, I'd like to see what you have. Mine currently serves as a web page from an ESP-32, not exactly sure about the end state though, so more ideas are great.

I considered the periscope idea, but with a heavy rain and/or high winds, it'd still get wet. I'm not sure how sensitive these are to water, but I'd rather not find out.

— Reply to this email directly, view it on GitHub https://github.com/gmiller123456/ThermalCamera_MLX90640/issues/2#issuecomment-1078447351, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABYJYSCSCBQSACN7XK2HF53VBTVEHANCNFSM5QOS336Q. You are receiving this because you authored the thread.

gmiller123456 commented 2 years ago

I had tried the lens off a IR motion detector, it was a lot smaller than those. It worked, I just found the plastic bag to be more transparent to thermal IR. That looks really tempting as a nearly complete unit though.

ispybadguys commented 2 years ago

I ordered a few. For $2 it seems too cheap not to try. It is on the slow boat from China so to speak. I have my code working but it could probably use some more testing.  I integrated in a roll off roof controller into it. I would like to figure out how to get the cloud data into an ASCOM safety monitor. However Windows programming is beyond me.

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On Mar 29, 2022, 11:09 PM, at 11:09 PM, gmiller123456 @.***> wrote:

I had tried the lens off a IR motion detector, it was a lot smaller than those. It worked, I just found the plastic bag to be more transparent to thermal IR. That looks really tempting as a nearly complete unit though.

-- Reply to this email directly or view it on GitHub: https://github.com/gmiller123456/ThermalCamera_MLX90640/issues/2#issuecomment-1082627169 You are receiving this because you authored the thread.

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ispybadguys commented 2 years ago

I uploaded my code here:

https://github.com/ispybadguys/MLX90640-Cloud-Sensor-and-ROR-Controller

On Mar 29, 2022, at 11:09 PM, gmiller123456 @.***> wrote:

I had tried the lens off a IR motion detector, it was a lot smaller than those. It worked, I just found the plastic bag to be more transparent to thermal IR. That looks really tempting as a nearly complete unit though.

— Reply to this email directly, view it on GitHub https://github.com/gmiller123456/ThermalCamera_MLX90640/issues/2#issuecomment-1082627169, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABYJYSCR44ENEMYYBS5FNU3VCPOZNANCNFSM5QOS336Q. You are receiving this because you authored the thread.