@alperkal Oops, thanks for that! That's a good and convincing explanation why I got only zero values.

Hi @alperkal, my 5Atom Lite just arrived, and I tried to get the IR unit working. I could not manage to receive any IR signal. Thus, so far, I cannot tell what its range is, unfortunately. How did you manage to get it work? Which IDE and what libraries do you use? I have tried, among other things, IRremote Arduino Library by Ken Shirriff.
As soon as I get it working at all, I will be happy to tell you the IR range of my unit. I hope, I do not have to carve out a hole. It does not look that pretty any more.