The project progress has been slow going.   I am working a job and an internship right now.  I have done a bit of experimentation with getting an adder implemented and have met with several issues.  The totals if I added the numbers are different depending on which input I use for each number.    With the hackaday prize deadline fast approaching and lack of components I may have to call this one for now and complete it at a later date when I can afford to get the proper parts shipped to Alaska.  

Quick snapshot of the breadboard right now....  I am playing with different ways of manipulating the voltage, in this case it is a basic "voltage divider" setup just to see if I can solve part of my input issue with addition.  

The little circuit board at the top is an opamp "virtual ground" to split the 5 volt source that I am working with.  The 6 switches let me input the voltage I want into each input, in this case -2.5v, 0v, +2.5v.  

In other news: 

I have been toying with another project idea and posted it at http://hackaday.io/project/1905-Toner%2FLaser-3D-Printer