Hi,
Ah ok, so hexadecimal counts from 0 to F, so 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F.
Easiest is to just google for a hex to decimal converter.
Do you have the datasheet for the sensor you are using? What is it's voltage range for the output?
What did you do with the sensor while taking this reading shown in the video? Did anything change when moving something in front of the sensor?
Greetings,
Bootsy