sbbrain

The printrbot already had pretty good print quality. I noticed marginal improvements in the 3 axis due to the x2 belt pulleys on the x and y and the m5 threaded rod on the z axis. Mostly in small detail prints with 0.1mm layer height.

You can try to light up the array without the code. Attach 5V to a resistor and try to light up each of LEDs one at a time. This will tell you if it is a hardware or software. If the hardware is wrong rewire. If the code is wrong just double check it for errors.