I would be interested to help out with a plans set. Probably the most confusing to a new hobbyist is the electronics. So I would contribute to that section.
I am just starting my own router design and will be developing a unipolar driver board employing the Allegro chipsets.
Their best micro-stepping PWM drive can do 36 V at up to 3A per phase. I will be building an opto-isolated 4 axis driver with limit and home switch inputs. The board has onboard current limit adjustment and LCD display of the current limit setting via a PIC ucontroller and 2 line LCD. I already have the schematic designed, but I need to get some boards made and I am waiting for chip samples. Allegro seems to be rather tight fisted with their chip distribution, which is a problem for small volume buyers like hobbyists.
Eldon. |