Did your motherboard and extruder board come with bootloaders pre loaded? I needed to get an ISP programmer to load them; I hear you can use an Arduino in a pinch, but it's not simple.
Also, a few details would help - what firmware are you running, what host software, what OS, etc. I'm firing up a Darwin with Makerbot electronics right now, but I'm using the Mendel firmware, so my setup will be a bit different than yours, but it should be close, at least up to the point where you can load the firmware.
Edited 1 time(s). Last edit at 10/22/2009 02:44AM by Wade.