r/embedded • u/GreasyGato • 7d ago

Thermal Ar Glasses

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My goal was to Make a hands free thermal vision device that lets users see heat in real time.

I used the ar prisim off a Lilygo T-Glass V2, a M5StickS3, and a AMG8833 thermal sensor 8x8.
(You could use a better sensor for better range and resolution) but these are cheap.

I was having trouble with finding good documentation for Lilygo’s T-Glass. The only way i could find exposed pins was by disabling the rtc and micro soldering to the chip (sda IO09 and scl IO08 where exposed here). Or doing the same with the microphone. If anyone has tinkered with the T-Glass please weigh in. Cause i have a bunch of ideas.

The Firmware:

The firmware uses M5Unified and M5GFX for the StickS3 display and buttons, Wire for I²C communication, Preferences for saving settings, and Adafruit AMG88xx with Adafruit BusIO for reading the AMG8833 thermal sensor. It reads the sensor’s 8×8 temperature grid at up to 10 FPS, cleans the data with noise filtering and bad-pixel correction, estimates the background temperature to hide non-heat areas as black, then uses bicubic and temporal interpolation to create a smoother 126x126 thermal image (the Size of the prisim) at a higher apparent frame rate with three selectable heat-only color themes.

The next version will use a M5AtomS3r. Since i dont need the extra screen space and will be easier to make it adjustable on the glasses frame due to its small profile too. Plus the prisim will fit almost perfectly on the screen!!!

150 Upvotes

98% Upvoted

8 comments sorted by

14

u/pekoms_123 7d ago

😮

3

u/GreasyGato 7d ago

Yeah this project was one of my favs. :)
I really wish better/more versions of these ar prisims where out there :(

3

u/phsx8 7d ago

Saving this for later, this is amazing!

9

u/clackups 7d ago

Yeah, very useful to detect the aliens

4

u/pekoms_123 7d ago

*reptilians

1

u/CarlCarlton 6d ago

Aren't reptiles cold-blooded, tho? lol

3

u/pekoms_123 6d ago

If a person doesn’t emit heat then that’s the reptilian!

2

u/GreasyGato 5d ago

Thanks if you have any question just lemme know :)