Thanks for the info, when I get some more free time I need to debug my code a little more. perhaps I am sending too many or the manner in which I am using the buffer and digitalwrite() is not good. This is still an evolving project, and my first project, so I have a bit of learning\optimizing to do… I will post my findings for others, but it may be a couple days before I have time to really dig in.
@Lichtsignaal dank je wel!
more info here: Environment controller - Temperature, Humidity, Light