raschemmel:
If your comment:
was that useful, then why did it take 39 posts (54-15) to find the problem ?
Because of people posting a rather considerable amount of irrelevant information.
Your point stands though, a pull down resistor or just changing arduino pins would have found the answer sooner. I just didn't expect my otherwise working atmega chip might have a bad pin.
And to answer your other question, yes the irf3205 is switching perfectly now when connected to the output of the TC4427 with 12v on Vdd.