Example to set the extended IR mode

[MahendraSondagar]

Hi... there
I'm using the default example with STM32, from where I'm getting object and ambient temperature
The temperature almost seems constant, but when I touch to sensor then and only then it's increasing
I'm expecting Non-contact type IR
I've gone through the datasheet
It seems I need to set for the extended mode

I got the .c file for the Extended mode, but I'm also expecting the example code of it
That would be great if you can help
Thanks

[Letme]

I think this is more then fitting into mlx90632-example repo?

Anyway, are you sure your sensor is supporting the extended mode? Even without extended mode the values should change with old formula and without contact unless something is obscuring the sensor field of view (this is first thing I would check). Does your setup have a lens over the sensor?

Probably @slavysis can put the general (non stm specific) example flow in README, below current example description of the normal flow.

[MahendraSondagar]

Hi guys...
Thanks for the reply
The problem is, I'm not getting the Non-contactless functionality
Even I've been trying with the default STM 32 code and Arduino
But the result is the same!
It's working when I touch the sensor
I have custom made a breakout board which I have shared here for your reference
right now, I don't have any cone shape plastic cap or glass on top of it for the FOV
is it necessary?
One more question, if the Sensor is active IR then, may I expect the IR light coming out of it?
if yes, then I have spotted my SmartPhone camera on it and it's unable to show me the IR light from there!
My Sensor's part Number is : MLX90632SLD-DCB-000
**My application is for the Medical grade IR thermal sensing which is quite similar to the demo that you guys showed at your YouTube channel
TEMP Sensor- MLX90632.pdf
**
https://www.youtube.com/watch?v=SNvl5HdzIL4

I'm expecting the support from Melexis
Thanks :)

[LBuydens]

Hi, this forum is more intented for software support. From what I see I suppose that is not the problem.

The MLX90632 gives 2 temperatures, the To object temperature and Ta, ambient temperature. Are you looking at the right temperature?
If indeed To does not vary or = Ta always, could you make a log of the raw data readings and calculated temperatures? With that data please contact your distributor for support, or alternatively, contact sales@melexis.com.

[cakira]

Hi! I'm not affiliated with Melexis and I came here just searching for example code to work with the extended range.
However, maybe I can help @MahendraSondagar .

As @LBuydens said, the Melexis sensor reads 2 temperatures, the ambient and the object temperature. By your description, it does seem you are reading only the ambient temperature (the sensor's temperature) and you are interested in the object temperature.

Regarding the IR light question, the sensor doesn't need to emit IR light, because every matter in the universe already emits infrared light by itself and the Melexis sensor just measures it. Depending on the precision of the measurement, it's important to learn the concepts because the calculus of the temperature depends on the body emissivity, which depends on the body you are measuring. Melexis used 1.0 as default emissivity, but this is true only for a perfect black body.

[Abhijeetbyte]

Hi
First of all, MLX90632 is not an Active IR sensor So, it could not emit any kind of IR radiation maybe you need to read the datasheet before playing with the sensor.
https://www.melexis.com/en/search#q=mlx90632
Your Problem related to two things maybe you only enable ambient temperature reading
or there is some kind of physical problem may be the sensor or opponents damage