Grid-Eye

Question

Has anyone attempted to use Panasonic Grid-Eye for thermal image capturing or study of heat spreading in a load?

I recently attempted to study heat spreading in a cylindrical container containing water inside a microwave oven - having come over the difficulties in attempting to mount the camera.

Would be interesting to compare/share data....

shabaz · Answer

Hi Maanas, Unfortunately I don't know what to suggest with bluetoothctl. I didn't use bluetoothctl, and frankly I don't trust any of the tools supplied with BlueZ. I don't know what the capabilities of bluetoothctl are beyond the basics. It may even be buggy. The code which worked is the Node.js code I stuck on github, and confirmed working by some people in the comments here: Building a Thermal Imaging System with the Raspberry Pi 3, Sense HAT and Panasonic Grid-EYE The code was written over a year ago, I have not re-visited it, so it is possible meanwhile some other things may have changed and require tweaking, but I think it should work.

shabaz · Answer

Hi Kauser,

I have not tried, but it sounds interesting (and feasible). Obviously there is low image resolution, but interpolation could help.

Also, maybe if you repeat the test multiple times under identical conditions you can use the datasets for looking for averaging out noise in measurements (like astronomers do in their photos). From memory the Grid-Eye resolution is 0.25 degrees C (I could be wrong, so please confirm for yourself) which could be an issue.

If you're in a university, perhaps a math or physics department may know what manipulations you can do to the captured data to observe the heat spread. They are probably used to looking for pattern/trends in numbers, which is essentially a big part of your project.

shabaz · Answer

Hi Maanas, It keeps streaming it, so the code just needs to keep reading the content and storing it or dumping to the screen. I'm not a super-expert in the Bluetooth library that was used, but basically it is called 'noble' and there is some examples of it online. I didn't know entirely what the BT conversations from Grid-EYE board should look like, so I reverse-engineered, and found things like the UUID etc were unchanging, so I used them. To do the reverse engineering, I used some BLE grabber (I can't recall which one, but many BLE dev-boards come with them, I think I used a Cypress one, and they have Windows software to grab a capture. But you don't need to do any reverse engineering, since the code I wrote ( https://github.com/shabaz123/grid-eye ) incorporated those captured UUIDs, etc.

Grid-Eye

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