Scott's 2.x Log

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Re: Scott's 2.x Log

Postby sshwarts » Tue Mar 10, 2015 11:00 pm

Thanks for the kind words. The source code is available here: https://github.com/sshwarts/2.xLaser/
As are all the STL files for the parts I 3D printed.

I used NEMA 17 steppers. 200 step/rev.
I used three of these drivers: http://www.lightobject.com/Mini-2-Phase ... -P650.aspx

I bought a 24V DC 14.6A 350W Regulated Switching Power Supply on eBay: http://www.ebay.com/itm/24V-DC-14-6A-35 ... 3cd0b1c717

The daughter board I built has a buck converter on it to take the 24V down to 9V for the Arduino. It also has a 5V regulator to power the red dot laser target and the relay boards: http://www.amazon.com/gp/product/B00E0NTPP4/

I used 22/4 Stranded shielded to go from the Steppers to the drivers and from drivers to AWC-608. For all the internal wiring (not counting 120V), I used 22 AWG. It all runs in sleeves (Techflex 1/8" Expandable Sleeving). Wiring from limit switches was twisted pair (salvaged from ethernet cables).

Ask away any questions!

Scott
sshwarts
 
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Re: Scott's 2.x Log

Postby bloq » Wed Mar 11, 2015 6:35 am

Hey Scott!

awesome! Thank you very much! If i may ask 2 more questions. Do you know more about the Nemas? I am a little bit uncertain regarding
the holding power and length of the nemas. And: The BOM says dual shaft but as far as i can see only one of the nemas needs to be dual shaft?
the drivers look good but i have a question: Do you think mixing would be possible? Lightobject does not write too much about the
drivers and i wonder what happens if they are not offered anymore.

once again:

thank you!
bloq
 
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Re: Scott's 2.x Log

Postby sshwarts » Wed Mar 11, 2015 3:31 pm

Hi! Yes you're correct that only the Y axis stepper needs to be dual shaft. I bought mine from inventables: https://www.inventables.com/technologie ... or-nema-17

There's not a whole lot of mass it's moving on the X axis and with the dual shaft arrangement on the Y, these seems to do very well. The laser head is really always on the move unlike a CNC where to hold position and then put torque on the axis(s) as you cut.

I wouldn't be overly worried about the drivers personally. There's a number of sources for these in particular besides LO. I don't see why you couldn't mix tho I'd personally match XY and not care too much about Z.

Scott
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Re: Scott's 2.x Log

Postby bloq » Thu Mar 12, 2015 3:08 pm

Awesome! Thank you so much. It is good to know that there are still people here who can help. Thank you so much!
bloq
 
Posts: 88
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Re: Scott's 2.x Log

Postby Biotech1 » Wed Apr 20, 2016 1:13 am

Hello Scott I'm just starting my build right now I am researching all parts to buy but I want a bigger machine do I need to download Scad for your scale to work...
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Re: Scott's 2.x Log

Postby sshwarts » Tue May 03, 2016 2:20 pm

You don't have to use the OpenSCAD files to scale it, I just found it very useful.
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