Here is the current project....
I have currently an Arduino Nano on breadboard with a Max232 connected to my KX3. I was able to run some basic commands from the Arduino (via a serial console) to the KX3.
The picture above is the next step in the project. I am going to make a shield for an Arduino Uno that will allow me to do some software development on a more stable platform. The JP1 connection will go to an I2C driven 20x4 LCD. I will probably also look at adding a PS2 keyboard the next time that I can find a little bit of time to extend the drawing a bit further.
The plan is to convert this to a board layout and then mill it out on the CNC when time permits.
73 de NG0R