If you count the pins, while looking at the labels, you will realise it is connected to the second pin the one labelled "tx" and that has worked until now.
For the rest of you guys I have another question, I can get a hold of a programmer to upload the code (whatta ya know, it is available after all: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/LCD/Monochrome/serlcd-v2_7_4line_10MHz.zip
but how do I use one of those, and is it possible from Ubuntu? (yes, i run ubuntu 12.04 as the only system on my laptop)
[qoute]So OP, did you use the backlightXX functions anywhere in your code? If yes, where's the code? If no why defining the functions?[/qoute]
It was my plan to later integrate some sort of regulator for the light, but never got around to it. Besides, this is some code that was found on the arduino website, i just can't seem to find it again