Different range values

Ultra-Wideband
,
#1

Hi,

So i have a problem where I get range values between the a tag and an anchor for example:
RANGE = [16,15,16,15,16,15,16,15]
I do not change the distance between the anchor and tags the only thing that I do is reboot the anchor and the values change:
RANGE= [18,19,18,19,18,19,18,19]

The fact that it constantly changes is a problem because it means every time i have to recalibrate the values. Does anyone have any idea as to why this happens?

Also should I ground every single Vss pin or if one Vss pin is it fine since they all interconnected?

#2

What are the units?

Is that in meters, in millimeters or in blue parrots?

#3

Sorry, it’s in meters.

#4

Leylan,
Something is completely wrong in your SW/Hw. You may see changes of few cantimeters, I.e. 0.01m but not 100 times higher.
Use Decawave’s standard HW and example code to evaluate the performance. Regards.