Building a Portable Thermal Imaging Camera - Raspberry Pi and MLX90640 guide

[@kingdavid_p]

This is a really good guide that simplifies down the process without missing key steps. Great job explaining things. Do you think that with the Rasp Pi 4 you can get more FPS and better resolution?

[@joeld9038]

This. Fantastic Tutorial, clear step-by-step instructions, awesome setup!

[@EverythingSmartHome]

🙏 thank you, really appreciate it!

[@upgormiti6310]

Great tutorial! I am working on a similar project. Using a Raspi 4 and MLX90640 (Pomoroni). I have followed your guide, but everytime I run the code I get this warning error: "RuntimeWarning: I2C frequency is not settable in python, ignoring! warnings.warn(" What seems to be the problem, Sir? Thanks in advance for your response.

[@jasoneaton4514]

Instead of adding a camera to overlay thermal, can you add this to a VR set?

[@ramonabdyo]

how do you solder the pin headers to the hdmi display screen?

[@bradkaufman9591]

THANK YOU for making this video! I am working on an unrelated project with the MLX90640 Thermal Camera from Adafruit. I wanted to test the camera hardware prior to sending it off to my dev team. I can hack through some code here and there, but I am not a real programmer any more. And I could not find a way to try the Thermal Camera and see if it worked, or if I liked what the output looked like, etc. Its not as easy as plugging in a usb camera into a laptop. So, I followed the instructions on this video, and had it working in short order. I got to test my cameras! This is a great app, and a great idea. Thanks again! By the way, the Adafruit MLX90640 camera works great!

[@EverythingSmartHome]

That's awesome, glad it was useful!

[@novallouisgio7749]

hello, i know this video was from long ago already, but i wanted to make a similar system without the external display for our thesis project, i have a Raspberry Pi 4 and an MLX90640 thermal camera similar to that in the video, i already inserted the right pins but after using the i2cdetect command, the camera's address won't show in the terminal, is there some way to troubleshoot this or am i doing something wrong

[@stevencarson4338]

This will be my first raspberry pi project 😁

[@antoniob.5918]

Is the python 3.9 working with that? numpy 1.23.1 is not working with that script of yours. Can you update your git repository?

[@DerekofEarth]

Excellent video. Curious, what kind of distance can you pick up with that camera?

[@EverythingSmartHome]

Thank you 🙏 it is able to work at quite a good distance but accuracy is better when closer. That being said if you don't need the actual temperature and you just want to see the hotspots/heatmap then it works very well at quite a good distance!

[@dipeshjackson7245]

I have got to the mirroring part but I seem to have a problem. When I run the thermal camera command the mirror mode just mirrors the screen and nothing is picked up by the thermal camera even though it is detected when running the detecting command please help :)

[@JustinSobey]

Given the weather I was considering having a go at this to see what heat leakage I had in my house. Would this level of camera be good enough for that iyo ?

[@collinxsmith]

@ 2:06 you state to match up 5V, SDA, SCL, GND to the camera. I think you meant to say 3.3V ? Still in input range of the mlx90640

[@EverythingSmartHome]

No I meant to say 5v, mine is 3.3v or 5v compatible. You can of course 3.3v if you want to!

[@collinxsmith]

@@EverythingSmartHome I have the mlx90640 as well and can see the input range 3-6V so there is no real issue here. I considered the same touchscreen you have because of the easily solderable pads for the 90 degree dupont connectors. This is me being nitpicky. If the layout of those pads are the same as the gpio pinout of the pi itself, then to me it looks like you're pulling from the 3.3V pin (based on video around 2:00 ) www.raspberrypi-spy.co.uk/wp-content/uploads/2012/06/Raspberry-Pi-GPIO-Header-with-Photo.png The two 5V pads on the other side don't look to be used in your case

[@hafizhashimimtiaz6872]

Hi, Thank you for sharing such a nice work. I have one thing to ask. Can we use it to make image of gas (CO2) plume, as gas plume is hotter than normal environment?

[@Thee_Sinner]

Not being educated on the subject, Im curious how much ambient temperature affects the skin temperature that would be seen by a thermal camera. Its currently 108F where I am; How much would my surface temperature differ from that of internal had I just been in direct sunlight (walking from my car into the Dr office)?

[@EverythingSmartHome]

That is definitely outside my wheelhouse 😂

[@unlimitediq1894]

@@EverythingSmartHome could I potentially connect the camera to the inside of a digital cam

[@hecoflip5956]

Can you use the GitHub code for other cameras or can you modify it? Also, does the code work on cheaper boards like a pi zero?

[@poepflater]

awesome project

[@EverythingSmartHome]

Thanks, appreciate it!

[@ramonabdyo]

I was thinking of doing this exact project. This will help a lot :)

[@EverythingSmartHome]

Thank you, let me know if you go ahead with it and how you find it!

[@ramonabdyo]

Will do👍 I’m going to do it as a colab with my school, so that the students can be tested if they have a fever before entering the school

[@李思怡-p1l]

which FOV do you choose? 55 or 110?

[@irishguy200007]

Can this device be used without a rasberry pi.

[@TrainBeforeSleep]

Is there a way to send this image to PHP website hosted on Raspberry pi ?

[@itplainedge]

What's the max distance someone can stand from the Pi to get a readable temperature? On the thought that we should stay further than 6 feet away when taking someone else's temperature?

[@EverythingSmartHome]

Sorry I couldn't say for sure on the accuracy because unfortunately I don't have anything to compare to or anything that I 100% know for certain the temperature of

[@mustache2295]

Epic! You read my mind!

[@blazelion7926]

Hello. Great vid. Im working on a similar thing and was wondering what power bank u used or if u had any recommendations

[@EverythingSmartHome]

Thanks! I just grabbed an Anker one I had around but probably one that can do quick charging would be best so you don't throttle the Pi.

[@vietblack]

What is the highest temperature this device can measure?

[@vladk9152]

What's the maximum range the sensor can detect a human being?

[@aleb128]

Sick! That camera is expensive though...

[@EverythingSmartHome]

Thanks! 🙏 Yeah for sure don't pay over the odds for it, there are still some excellent places selling it at the correct price just got to hunt them down!

[@aleb128]

@@EverythingSmartHome for sure! Can't wait to give this a try! Thanks!

[@ramonabdyo]

you can find a similar one on digikey for only 59,95 dollars

[@aleb128]

@@ramonabdyo Thanks! I'll have to check it out.

[@estebantorito123]

Can it work with mlx90614??

[@TheIammcnorman]

Every time I try to run the program it freezes. All the setup commands worked no problem and the camera is detected. Any suggestions? The only difference in hardware is that my camera is marked as adafruit, as well as stemmaQt but is still the mlx90640.

[@EverythingSmartHome]

Hmm that's strange. If you run an i2cdetect scan, which address is your camera being picked up on?

[@TheIammcnorman]

@@EverythingSmartHome 0 x 33, just like yours. This may sound strange but it started working after a few restarts. Now I have to figure out how to convert the temp to farenheit as well as find a way to launch the program without a mouse and keyboard.

[@EverythingSmartHome]

Ah glad you got it working!

[@mke_gal]

@@TheIammcnorman hey! just wondering...did you end up figuring out how to do the conversion to F? thanks!!

[@mindbuilderacademy1143]

Hello can I use raspberry pi 3b for this? This is a Great project!

[@EverythingSmartHome]

Hello, you sure can, that's what I was using in the video! Thanks for the support

[@noweare1]

Good project

[@BH4x0r]

if this is one of the waveshare ones, it can go up to 64Hz/FPS instead of 0.5 default Hz, but 8FPS is recommended for standard rpi usage which is much faster than this

[@AirsoftAbominations]

whats the limiting factor? why only go to 8? what stops you maxing it out or getting 30 minimum?

[@BH4x0r]

@@AirsoftAbominations probably the processing power required for calculating and displaying the different temperatures etc, don't know how well a Pi 4B (which i have) would run it as i don't have one of these modules, and i honestly don't think they're worth the price (32x24 for $110) at that point the Flir ONE is probably a better option as you can use it both on your phone and pi

[@AirsoftAbominations]

@@BH4x0r they're £54 right now on pimori, I've seen units smaller than a pi zero process higher resolutions, what's so inefficient about the pi running it here?

[@BH4x0r]

@@AirsoftAbominations Well i meant the flir would definitely be a better option as the resolution is near unusable on these modules, and usually very overpriced

[@paulcreaser9130]

@@AirsoftAbominations If you increase the frame rate, the noise level increases according to the data sheet (less averaging ?).

[@hemeshchadalavada3430]

Great Vid!

[@EverythingSmartHome]

Thank you 🙏

[@ramonabdyo]

why did you say "connect the camera to the raspberry pi" but in the video you connected it only to the display?

[@noweare1]

On the back of the display he added pins that connect to the RPI via that large black connector next to the pins. This allows the sda, scl, 5v, gnd from the camera to get to the RPI. He used a dupont connector to connect the camera to the pins.

[@anweshnettim9184]

Hello, Thanks for the video, I followed everything like video shown but while executing the line (pi@raspberrypi:~/mlx90640-thermal-camera $ ./thermal-camera-advanced.py) @3:41 sec, I am getting error like bash: ./thermal-camera-advanced.py: Permission denied . could you please tell me how to avoid it. Thanks, Best Regards, Anwesh

[@EverythingSmartHome]

Hello, make sure to use sudo at the start of the command :)

[@anweshnettim9184]

@@EverythingSmartHome I tried but same error

[@EverythingSmartHome]

Do "sudo su" first then try. Definitely should work

[@vuuanh]

How excellent you are!!!

[@EverythingSmartHome]

🙏

[@bremexperience]

And of course, this camera is backorder until the end of 2021! :P

[@EverythingSmartHome]

So unfortunate 😭

[@alkhashtee]

Appreciate you buddy

[@EverythingSmartHome]

Thank you sir!

[@dineshsoni6708]

great job you did, thanks for sharing i follow all steps as you explained in video. getting error as below it may be i using mlx90641 instead 90640 every where says both is same accept its resolution 32x24 and 16x12 using 1.raspberry pi4 -2 GB 2.latest raspbion OS 3.Python3.7 as Thonny IDE 4.using Sensor MLX90641 error is File "/usr/local/lib/python3.7/dist-packages/adafruit_mlx90640.py", line 774, in _ExtractDeviatingPixels raise RuntimeError("Adjacent outlier pixels") RuntimeError: Adjacent outlier pixels

[@abhishekshelke6241]

Hi, I am getting a error message- libEGL warning: DRI2: failed to authenticate Can someone help.

[@matthewsrosario610]

Did u can fix that?

[@daviddavidsonn3578]

anything higher res than the MLX90640 because 32x24 is really way too low for what I need.

[@EverythingSmartHome]

Sure, there are higher resolution cameras out there, I just don't have any experience with one unfortunately.

[@thugtechgamer5308]

Nice vid

[@EverythingSmartHome]

Thank you, appreciate it!

[@GauravKumar-wo2ks]

After doing all the process you mentioned in the video, I got a error when run the program using thermal-camera-advanced.py File "/home/pi/project-name/TestMLX.py", line 6, in i2c = busio.I2C(board.SCL, board.SDA, frequency=800000) AttributeError: module 'board' has no attribute 'SCL' Resources which I used - 1. Raspberry Pi 4 2. Sensor - MLX90641 What should I do !!

[@EverythingSmartHome]

Did you run the i2cdetect command and what is your address?

[@GauravKumar-wo2ks]

@@EverythingSmartHome Yes I have run the i2cdetect command, and the address is 0x33

[@EverythingSmartHome]

Which version if Raspberry Pi OS are you using? Did you make sure to install all the requirements?

[@shaneobrien9315]

That screen does not work correctly with a Pi4 only the Pi3

[@mke_gal]

it works for me, I have a pi 4!

[@shaneobrien9315]

@@mke_gal The screen does the touch feature doesnt

[@ramonabdyo]

If you point it at someones face what degree will it show. Because the nose differs from the forehead you know. (I want to measure the forehead obviously)

[@EverythingSmartHome]

It will display the hottest temperature on the screen. But you can just move closer to zoom in on the forehead to get a more accurate result

[@falloutboi9796]

Your program is lagging and the colors are only red and blue.

[@EverythingSmartHome]

Interesting that you then upload a video with almost the same program and colours :)

[@ther3negade273]

he made u look real silly