@gohan yes, I certainly could treat these sensors manually but of course that is more work! I think I will create a feature request on NodeManager to add a "virtual" sensor capability anyway because it would be useful and probably not that hard to build. This concept already exists for things like the battery sensor which has a pin "-1". Edit: added request for this feature as issue #257.

@jsiddall yup, defining a function without return value :)

@tekka, yes, sorry, should have clarified. 7 bytes for MYS sensor, but the 6 bytes I was referring to as a "header" was the typedef on the firmware download. So 7+6=13/32 leaving up to 19 bytes for the firmware block itself. Thanks for the clarification on the padding and the CRC. That will become important.

@wallyllama have a look here: https://github.com/hollie/misterhouse/blob/master/lib/MySensors.pm The default branch is stable but you won't find it there [yet].

New category created.

great news. I will try the version 2.0 this week.

@the-cosmic-gate There are so many manufacturers! Generally, as a rule of thumb the cheaper you pay for the screen the more difficult it is to get it working. Besides, anything to do with Arduino does require some DIY skills :-) Above I recommended Itead Studio screen, but it does cost more though works out of the box.