Homebrew PCBs

damn it, wanted to try some more and suddenly the printer goes into error  
mode when i try to print anything.
It starts up OK with no fault, then as soon as i print something or press  
paper feed it will do the usual head movement to the left and then sit  
there for a second. When it should start the paper roller it goes into  
error mode without any movement. The paper roller and stepper work/turn  
just fine, it moves that when starting up. I didn't even touch it since  
last time, letting it sit there powered on.. stupid thing.

ST