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#1 2017-02-02 01:05:19

mondo50m
Member
From: Florida
Registered: 2017-01-29
Posts: 39

Might be over with

I have tried and tried and I can not get the stepper to move at all.  I am of the belief that there has to be some special coding in the PI3 in order to use a stepper with it?  I have tried wiring an a4988 straight to the GPIO header with not luck, and then using a Ramps 1.4 with no luck.  Either I am not hooking something up right or there needs to be additional programming in the PI.  The mechanical I can do, I can make and burn circuit boards, etc.  But, I can not, for the life of me get the hang of programming.  So, I will keep plugging along and maybe, one day, something will snap and it will all fall together.  Thanks everyone for your kind help.

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#2 2017-02-02 02:04:55

bigfilsing
Member
Registered: 2016-11-20
Posts: 100

Re: Might be over with

Have you loaded the patched version of Marlin on the ramps ?? (https://github.com/mUVe3D/Marlin-mUVe1DLP-Running)

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#3 2017-02-02 02:28:08

mondo50m
Member
From: Florida
Registered: 2017-01-29
Posts: 39

Re: Might be over with

I have now.  I should not let my failing here get me down. Sorry if it seems that way.  I just want this to work.

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#4 2017-02-02 02:45:45

bigfilsing
Member
Registered: 2016-11-20
Posts: 100

Re: Might be over with

Don't worry about it I often find myself screaming at the gods when getting things to work the way i want them.  Added to which i was educated in engineering in the "If at first you don't succeed Get a bigger hammer" era
Youll get there if patient

Maybe go back and read this again https://www.nanodlp.com/download/
Its only 1 page but contains a lot of useful/critical info
Good luck

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#5 2017-02-03 03:37:30

mondo50m
Member
From: Florida
Registered: 2017-01-29
Posts: 39

Re: Might be over with

WOOP!!  WOOP!! WOOP!!  I got the stepper running with the PI3 using GPIO pins.  Right now I am dry running it through 400 layers, allowing 3.9 seconds between layers.  This, of course, will all change.  Next is to build the vat and attach the FEP.  Possible give it a test run this weekend with actual resin.  Thank you all for the help you have given me.  Without it, I would not be this far.

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