Ok, so.. I'm admittedly probably not the best with Eagle...  And I ran into the limitation with the free version PCB size...so I am looking at switching to kicad....after I created the schematic in eagle of course...I tried converting it but the scale was waay off...  So, anyway..until I get that sorted out..here's a sneak peak at the control board schematic..  I am handling the pcb's in probably a different way than most open source projects... I've run into several in the past where I'd like to build the device..but didn't want to go all in and either buy a board, or have one made, etc... so, what I'm doing for this is providing a few alternatives for the folks who want to build one but don't have all the options..  So, 1st option is buy the pre-made breakout boards that I will list from places like adafruit and sparkfun...and slap those on a breadboard and wire it up yourself using the schematics I'm providing...will work just fine.. 2nd option is to take the eagle(or kicad, etc.) files and either mill it, etch it, or have it made...then populate it with the breakout boards from the same as the previous option... or 3rd you can download the alternative board layout which has all the parts integrated on the board in one place..  This would be the more standard option and provides a nice clean setup...

At any rate, here's the first half of the controlBoard...  It has the nucleo and two easydriver stepper drivers, a lm2825 switching power supply and a couple connectors.. The second half will have the HBridges, etc...