Hi guys, this looks like a lot of fun. I found grbl and tinyg after watching NYC CNC on youtube and I'm excited to get mine working. Question is to use grbl or tinyg to run 2 steppers, NEMA23 probably about 2+Amp or little better. My application is pretty straightforward so don't think I need advanced S-curve and control as in the tinyg but I do have one oddity that I'm not sure either can handle (at least without source code modification): My X,Y stage is not a straight "gantry" style where X is one axis and Y is the other axis; my X position is a function of both motors, and my Y position is a function of both motors also using some trig functions. The trig is pretty simple, should not slow down but I do need some custom function both on the forward kinematics (driving position) and the reverse kinematics (reading position). Which board should I use? Some basic guidance will get me rolling (er, I mean driving). I would appreciate thoughts, this looks like a blast.