Not much advancement on the Arduino since the fall. Moving->Summer=Not A lot of time spent inside twiddling with electronics.
- Spliting CNC Endeavors.  I have accumulated a mini lathe, so I am looking to retrofit it for EMC2 CNC Controls, using Xylotex System.  If that ever dies, I will probably go with and Arudino Based System, new advancements on GRBL.
 
- Spent a lot of time trying to get my Makerbot Extruder/Controller, to work with Xylotex CNC Driver/EMC2. Abandoned because difficulty/not enough know-how to make work with Linux/Time.
- Adopted Arduino Mega/Pololu Stepper Driver Method - better documentation,
 
- Currently attempting to edit Motherboard/Extruder Controller to work with each other.
Current Challenges:
- Connecting Makerbot Extruder to Arduino Mega - Have to alter the Firmware for both extruder and motherboard/pololu to make work. It seems I have just the right number of motors to make the lathe CNC, and the 3D Printer.  Let's just hope they are strong enough to provide the right power.
 
- No other Arduino Mega + Makerbot Extruder (DC Gear Motor vs. Stepper Motor) + Pololu Stepper Drivers, existing. More anxious to get the thing printing than ambitious to get into the firmware, so I am going to forgo for now.
 
- Need Opto-EndStops.
- Need to build physical machine - have held off on the machine, until I get the extruder working - but the extruder is getting close.