First, thanks for a great project and a great way to make possible what has just been a dream for me for a number of years.
Finally, I am able to start my own project. So far, I just plugged my Netduino Plus 2 to a Pololu A49888 controller, and a Nema17 motor to the Pololu, and after a few problems mostly due to a bad breadboard (no or bad contacts), I finally was able to spin my motor with some quick and dirty code. Great first step!
So my next step is to wire everything on a breadboard, and make it work, before starting to cut wood (I mean, MDF) to actually build my machine.
It's about this wiring it all that I have a couple of questions for you:
I am not sure what "Jog" is, and what should be wired to Jog X, Y and Z. ?
Same for Speed Override. In your description (but I know pins have changed now), you indicate A3, speed override (%). But I don't see what would be matching this on the A4988 ???
I will certainly not wire any limit switch until the machine starts to exists, but I would like to be sure I understand and make work all the software/electronics before going further.
For those who might be interested, as soon as I have all the circuitry completed and working, I will have a Fritz drawing available for those interested. It help me so much to see better what I am doing, maybe it could help a few others too.
Thanks for you help, Darrin, as well as all others in this discussion.