alguien sabe como hacer pruebas con un dirver pololu A4988 y el A4982? asi tambien en que se diferencian ambos?
got this cheap ramps: http://www.ebay.com/itm/171332507163?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
and some cheap stepper drivers: http://www.ebay.com/itm/231177237879?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT (A4988)
The ramps was to replace a non 24V capable version (didn’t succed to replace the 16V SMD capacitors with 35V types…
The board works fine so far, I think there is not a big difference between 4982 and 4988, they are cheap and compatible, both support up to 16 micro steps. If you need 32 micro steps you can use DR8825, they are also compatible and cheap: http://www.ebay.com/itm/DRV8825-stepper-motor-driver-board-with-heatsink-4-layer-PCB-Prusa-Mendel/281310713132?rt=nc
Those I haven’t tested.
The only problem with chinese ramps I had were bent pins due to bad packaging but I could straighten them.
You also need patience as delivery (to Europe) can take between 3 and up to six weeks…
I think that ramps 1.4 got cheaper because you can now get arduino due and ramps FD quite cheap: http://www.ebay.com/itm/Geeetech-ARM-based-Iduino-DUE-with-RAMPS-FD-Pololu-shield-RepRap-Prusa-Mendel-/271465085396?pt=LH_DefaultDomain_0&hash=item3f349479d4
It has more cpu power and you can install up to 6 stepper drivers.