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#1 2017-03-05 16:23:30

ljkoren1
Member
Registered: 2017-03-03
Posts: 2

ramps marlin/arduino settings for nema 17

#1
i sort of got it working, but i get a long ramp up sound, it moves a little bit, then a long ramp down sound. Can anyone tell me what all the code setting should be in the program i upload? And there is a long delay between pressing a calibration button like (move up 50mm) before it actually starts moving,like almost a minute or two.
is there an acceleration setting i should use? looks like maybe its 400 by default (for muve?)
i am assuming that nanodlp uses 1mm as the steps per field, not 1 inch?
my threaded rod is 18 turns per inch
my ramps steps should be 16
my motor is 200 steps per turn
so the equation is 200 * 16 * 18 = 57,600 steps per inch
25.4/57600 = 2267 steps per mm so that is what i uploaded (why does it have xxx/xxx in marlin? what is the second field for?)
my z height is 125mm


#2 i hate ramps arduino
if there is a simple schmatic and instructions for wiring direct with a polulu step stick and pi3 I am down for that too.

#3
does anyone have a working setup and code they would sell?

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#2 2017-03-06 09:18:20

binfordboy
Member
Registered: 2017-02-28
Posts: 17

Re: ramps marlin/arduino settings for nema 17

Take a close look on the different units in all nanodlp setup/profile pages. That helped me a lot.
Micron/Second, Millimeter, Pulse, Seconds and Microns are used.

Using more than 8 microsteps is mostly useless, because the achieved resolution is smaller then the steppermotor tolerance. You can't achieve predictable results.

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#3 2017-03-06 10:06:39

binfordboy
Member
Registered: 2017-02-28
Posts: 17

Re: ramps marlin/arduino settings for nema 17

deleted because it was complete rubbish,
sorry

should start the day with coffee :-)

Last edited by binfordboy (2017-03-06 11:28:39)

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