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Gaza07:
23 Aug 2019 19:26:42
I agree it does look a lot better for some reasom SMF shorten any recent posts display  :rolleyes:
Andy7:
23 Aug 2019 10:29:15
Nice! Looks loads better.  :beer2:
Gaza07:
22 Aug 2019 22:47:32
Sorted mate  ~~
Andy7:
22 Aug 2019 10:27:36
Sure. But basically, all the subjects are getting cut off.
Gaza07:
21 Aug 2019 18:14:54
Can you pm me a screen shot of what you mean
Andy7:
21 Aug 2019 12:15:41
Gaza - can you make the subject line section in the forum topic list wider? It's cutting off the subject field really short.
Andy7:
19 Aug 2019 09:14:20
Good for you!  ~~
DarkButterfly:
18 Aug 2019 19:13:57
Had another negative encounter, it's been a few years since the last one, just an uneducated ******, going on about drones being illegal yada yada yada.    :-/
Still that didn't spoil my flying time, had an absolute blast  ~~
Gaza07:
07 Aug 2019 19:52:01
ooooh mrs jones  :D
hoverfly:
30 Jul 2019 15:26:34
D.B. you tightwad.. :cool:
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3d - Printworx

Printing 3d Forum

z axis double motor

Started by philtrum, Monday,August 26, 2013, 13:57:39

Previous topic - Next topic

philtrum

just looking at the possibilities of adding 2 steppers for the z axis and came across this wiring

http://reprap.org/mediawiki/images/e/e3/Rampswire13.svg

shows patching 2 motors into the one channel ... food for thought

ps the board is

http://www.emakershop.com/browse/listing?l=342

Phil
Many Thanks
Phil
www.makeitbuildit.co.uk

barneyg

You need to be careful if you are going to use an arduino to drive your stepper motors ... which is what that board is designed for.

That board is designed for use with RepRap firmwares like Marlin or Sprinter etc : http://reprap.org/wiki/Firmware  I';m not sure these are suitable for running a CNC. 

The Arduino firmware that will definitely work for CNC is called Grbl and uses a different pinout to the reprap firmwares so a board that works for Grbl doesn';t work for reprap ... that said the firmwares are open source and looking at Marlin there is a pins.h file which defines what pins do what so in theory it would be possible to use a Ramps board with Grbl :)

shortwave

One of my machines runs  twin motors on a single axis
It';s not the best way to wire it on one single channel as you will have to Match the motors and set up the current limiting etc
You are better off using two channels and linking the inputs to the Channels from the parallel port This way you are less likely to lose steps