I'm completely new to eagle and I need a lot of help. I'm trying to make a pcb of the $50 robot board. i have a pic of the place where the sensors are supposed to plug in, will the breakaway headers fit right the way I have it? (I know it's not connected to anything).one of my questions is, how do I know that the holes are the right distance apart. How do I know how big the pcb is? the pcb is the big box, right? I'm sure i'll have more questions later. I just found out that the sensor ports the way I had them will not work. but when i get the holes close together so that it will work with the break away headers the copper padding overlaps. thx in advance