Arduino Uno R3 + Arduino Motorshield Rev 3 + Grbl

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EP1
Posts: 2
Joined: Mon Feb 16, 2015 6:33 pm

Arduino Uno R3 + Arduino Motorshield Rev 3 + Grbl

Postby EP1 » Sat Feb 21, 2015 11:12 am

Hi,
New here and thanks for an excellent resource.

We've decided on a dlp printer as a possible project in our makerspace and have a spare Arduino Uno and the official motorshield Rev 3 with a NEMA17 stepper. I was wondering if anyone has played around with this config for a z-axis control for a dlp type printer?

Grbl firmware assigns the pins D12 and 13 on the Uno to the spindle. Would it be as "simple" as editing the pin mapping in Grbl and compiling & flashing to the Uno to use the motorshield?

Or is there a more straight forward way using this type of config? We're hoping to use Creation Workshop as the eventual control software.

Any comments, suggestions and advice would be greatly appreciated.

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PacManFan
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Re: Arduino Uno R3 + Arduino Motorshield Rev 3 + Grbl

Postby PacManFan » Sat Feb 21, 2015 12:42 pm

It sounds like you have a firm grasp on what you need to do, basically, any setup that works for a FDM/FFF printer should be more than adequate for a DLP setup. You can re-purpose axis's such as the X axis for things like the tilt mechanism, or Y axis for the shutter control (if used) .

EP1 wrote:Hi,
New here and thanks for an excellent resource.

We've decided on a dlp printer as a possible project in our makerspace and have a spare Arduino Uno and the official motorshield Rev 3 with a NEMA17 stepper. I was wondering if anyone has played around with this config for a z-axis control for a dlp type printer?

Grbl firmware assigns the pins D12 and 13 on the Uno to the spindle. Would it be as "simple" as editing the pin mapping in Grbl and compiling & flashing to the Uno to use the motorshield?

Or is there a more straight forward way using this type of config? We're hoping to use Creation Workshop as the eventual control software.

Any comments, suggestions and advice would be greatly appreciated.

EP1
Posts: 2
Joined: Mon Feb 16, 2015 6:33 pm

Re: Arduino Uno R3 + Arduino Motorshield Rev 3 + Grbl

Postby EP1 » Sat Feb 21, 2015 12:57 pm

Thanks, will keep the forums up to speed with the build and stumbling blocks.

JJE
Posts: 3
Joined: Tue Oct 14, 2014 10:19 am

Re: Arduino Uno R3 + Arduino Motorshield Rev 3 + Grbl

Postby JJE » Sat Apr 04, 2015 6:21 pm

Hey guys,

Pretty new here, building a big dlp printer, had no exp with electronics whatsoever and desided to go with same electronics config, arduino uno R3 + the official arduino motorshield. Now I'm starting to regret my decision on going for reliable electronics since there is so few info on this motor shield. I figured out how to change de grbl pin config and flash it to my uno but i can't manage to put the correct pin numbers it seems... Any update on the editing you did in the pin config?

JJE
Posts: 3
Joined: Tue Oct 14, 2014 10:19 am

Re: Arduino Uno R3 + Arduino Motorshield Rev 3 + Grbl

Postby JJE » Sat Apr 04, 2015 7:10 pm

from what i've been reading online, this board isn't compatible with grbl, because its a dual full bridge and it doesnt use the usual step and direction inputs... this sucks...

DepthDesign3D
Posts: 9
Joined: Thu Mar 12, 2015 10:45 am

Re: Arduino Uno R3 + Arduino Motorshield Rev 3 + Grbl

Postby DepthDesign3D » Tue Apr 07, 2015 9:15 am

Unfortunately I found this out after getting my hands on a motorshield. I've resulted in using EasyDriver boards instead, hopefully I can fit two onto a protoshield. The motorshield may be compatible with Marlin if you were keen to try it out.