orcinus wrote:I've tested 1/32, 1/16 and 1/8 microstepping at 12V and 24V. At 1/8, there's not much difference. At 1/32 and 1/16 there is.
While not noticeable in what most people print (or seem to print), which is structural parts, the difference is there.
You get slight artifacts in print, but more importantly, it seems to exacerbate the "echoes" due to vibration (but only those caused by the steppers acting as a spring in the oscillatory system). Also, it makes the extruder flow more irregular (noticeable as unevenness along Z axis).
Now, obviously, if all you're going for is speed, none of this matters anyway
cvoinescu wrote:I built my own RAMPS-like thing on perf board, with sockets for Pololu-type drivers; I also have two or three GAUPS, and one of your RUMBAs from the Kickstarter. I haven't had a chance to use the RUMBA yet...
reprapdiscount wrote:i did not make the drivers for rumba only, they can fit on ramps or all other electronics with sockets for polou drivers.
regressedEE wrote:I might try this hack: http://reprap.harleystudio.co.za/?p=321.
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