... I probably have a little under 1K invested but not all at once, I've been collecting for some time now.
Still The APEX started kit is around 500 then you start adding the additional outlets and switch expansion that you have. You are right there with the APEX cost. Plus you made it and IMO have much more capabilities now. Good work. I took a few Robotics and Mechatronics classes in school and always wanted to make something like this. You definitely set the bar. Good job!