:thumbsup: sounds good. The processing power and memory would allow for a (basic) controller functionality.

haha, I knew you gonne hijack this thread As you answered the first question (more or less) i was looking for a good test rig long distance transmission line I yust have to re-read the specs off the ADM isolator i think :smiley: So there is no possibility to route from node to node pitty. Tnx for the answer anyway i will try the higher speed setting (57K6 or so) Btw good write up about the RS485 setup on the home page it will defenetly speed up things (as i spend a few hours wit wrong setup) Regards, Stefan.

Again right.. but the class definition is in the BL_Control.h file (line 47) The reason not to put the logic is that i yust want some sceleton for this kind of physical controller now i don' t have to include write and reads in the class and i can re-use it maybe for a PB dimmer. That off the declaration with the pinmodes is a habbit from the plain C period and assembler adventures with the AVR. There i set my outputs to a safe state before setting the DDR(x) register. As far as i assume the DDR is only relevant when you read the input (or want to do a logic operation on the input/output state. And it is overkill to write this in C++. But for me i consider it as a good excercise. And no i don't have a question I only wanted it to publish so others can steal maybe a idea Cheers,