RAMPS jumpers and microstepping August 20, 2015 09:54PM |
Registered: 9 years ago Posts: 18 |
Re: RAMPS jumpers and microstepping August 20, 2015 10:12PM |
Admin Registered: 13 years ago Posts: 6,999 |
Re: RAMPS jumpers and microstepping August 21, 2015 03:04AM |
Registered: 8 years ago Posts: 5,232 |
Re: RAMPS jumpers and microstepping August 21, 2015 10:58AM |
Registered: 9 years ago Posts: 18 |
Quote
Dust
That looks good.
I cant see a question here
vref is related to you stepper motors and drivers, wich you havent listed any details for your stepper motors (and they look tiny, but could be big machine)
I also have to ask why you have to use full steps, that just uses so much more power is jerky and loud.
Re: RAMPS jumpers and microstepping August 21, 2015 11:01AM |
Registered: 9 years ago Posts: 18 |
Re: RAMPS jumpers and microstepping August 22, 2015 12:58AM |
Admin Registered: 13 years ago Posts: 6,999 |
Re: RAMPS jumpers and microstepping August 22, 2015 01:10AM |
Admin Registered: 13 years ago Posts: 6,999 |
Re: RAMPS jumpers and microstepping August 23, 2015 10:52PM |
Registered: 9 years ago Posts: 18 |
Quote
Dust
"each 3200 pulses per second, I get only 4mm/s"
standard ramps can do ~67000 max step per second....
if you looks at [reprap.org] you can caculate the steps its using, using quad stepping mode (wich is the default)
Re: RAMPS jumpers and microstepping August 23, 2015 10:53PM |
Registered: 9 years ago Posts: 18 |
Re: RAMPS jumpers and microstepping September 09, 2015 10:42AM |
Registered: 9 years ago Posts: 245 |
Quote
dremel
Quote
Dust
That looks good.
I cant see a question here
vref is related to you stepper motors and drivers, wich you havent listed any details for your stepper motors (and they look tiny, but could be big machine)
I also have to ask why you have to use full steps, that just uses so much more power is jerky and loud.
Sorry, the steppers are: NEMA17 42BYGHW609 (x, y and z axis) , NEMA 17HS4218 (extruder)
I am facing trouble in getting the right step per unit and printer axis displacement relation. No matter what I do, I get wrong relations, or steppers just not move. Do you have some idea on that issue?
I may be wrong, someone can correct me later. I have SFU1204 ballscrews (D=12mm, Pitch= 4mm), so, if I operate at 1/16 microstepping, considering NEMA having 200 pulses per rotation, each 3200 pulses per second, I get only 4mm/s. If I operate at full step mode, the same 3200 pulses per second can give me 64mm/s.
I have bought a extruder, rated at 2.5 inch/s max extrusion speed with 0.3 mm nozzle diameter. It gives about 63.5mm/s extrusion max speed wich is close to 64mm/s max speed axis displacement operating at full step mode.