MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Computing, Software & Programming > 80. Computer Hardware & Software
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #1  
Old Mon 17 April 2017, 10:07
silverdog
Just call me: Sergio #70
 
Rome
Italy
GRBL firmware and bCNC

I am testing GRBL Arduino firmare with bCNC control software https://github.com/vlachoudis/bCNC/wiki ... Kitchen Table testing for the moment ... but I am realy impressed on haw the open source is moving ... just give a look at the Probe/Auto Level and Probe Camera Alignment ... Sonny Jeon GRBL's developer is working on a version for the ARM 32bit processors which will have much more memory and speed ....
BTW it's a 4 to 12 $ solution.
Reply With Quote
  #2  
Old Wed 05 July 2017, 08:52
TheDave
Just call me: dave
 
Toledo (Ohio)
United States of America
Sergio, thanks for the link! I was also impressed to find a CNC board for my Raspberry Pi that includes an Arduino Nano pre-programmed with Grbl software:
http://wiki.protoneer.co.nz/Raspberry_Pi_CNC

Sadly, it looks like they can only drive up to NEMA 23 motors (2.8 Amps), and I wonder if they can really do that anyway (motor drivers claim up to 2.5 Amps with additional cooling installed). But this looks to be the way of the future

Last edited by TheDave; Wed 05 July 2017 at 08:56.. Reason: how many times will I misspell "Arduino"???
Reply With Quote
  #3  
Old Wed 05 July 2017, 15:06
silverdog
Just call me: Sergio #70
 
Rome
Italy
Dave, here a solution to connect any drivers you like to those boards :-)
https://www.banggood.com/MKS-CD-5786...mds=mywishlist
Reply With Quote
  #4  
Old Thu 06 July 2017, 06:00
TheDave
Just call me: dave
 
Toledo (Ohio)
United States of America
Sergio, that is awesome!! I see a kitchen table project for me real soon!!
Reply With Quote
  #5  
Old Mon 10 July 2017, 01:29
Dumitru Ivanov
Just call me: Muresului 9
 
Cluj-Napoca
Romania
I'm also renovating and that table project sounds like a plan.
Reply With Quote
  #6  
Old Thu 13 July 2017, 11:44
TheDave
Just call me: dave
 
Toledo (Ohio)
United States of America
I was doing some more reading and found this on the Gecko Drive web site:

"A motor control will always draw less than 2/3 of the motor’s rated current when it is parallel (or half-winding) connected and 1/3 of the motor’s rated current when it is series (or full-winding) connected. That is to say, a 6 amp per phase motor will require a 4 amp power supply when wired in parallel and a 2 amp power supply when wired in series."

So I should be able to use NEMA 34 motors with the Protoneer board and the recommended Pololu drivers. I have no idea what the quality is on them, but it is possible. Maybe this motor?

https://www.omc-stepperonline.com/hy...s26-2006d.html

Last edited by TheDave; Thu 13 July 2017 at 11:46.. Reason: spelling
Reply With Quote
  #7  
Old Fri 14 July 2017, 05:11
silverdog
Just call me: Sergio #70
 
Rome
Italy
uhmm ... I think pololu are a bit underpowered for a nema34 ... if you want to try that solution, use at least the drv8825 which have a maximum output of 2.5 Amp pay attention to the specification, because they generally declare the peak output but the continuos output is lower ...
this coul be a better option: http://www.watterott.com/en/SilentStepStick-TMC2130 or the tmc2100 ..... the max output is the same of drv8825.
Reply With Quote
Reply

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 09:54.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.