Thanks Guys, now it works , i bought cables with different colour matching. Was a stupid mistake but i damaged nothing and now i can enjoy my silent printer.
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Best posts made by MauriceM
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RE: Problems with steppermotor
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RE: Problem with Duex Endstop Pins (external Gcode)
I solved the Problem
You have to PullUp the Pin than it will work.
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RE: Duex Heater 3
I found the error, i got the firmware from a friend and he used a Chamber heater that is allways on. I turned it off and everything is fine now