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Using Marlin and ramps for CNC

Posted by tacotrain42 
Using Marlin and ramps for CNC
January 09, 2016 08:30AM
Hello,
I am trying to use marlin to run ramps as a cnc. I uploaded my the sketch to my arduino and get the error
Error:MINTEMP triggered, system stopped! Heater_ID: 0
Do any of you know how to work around this?
Thank you
VDX
Re: Using Marlin and ramps for CNC
January 09, 2016 02:12PM
... either you bridge the thermistor pins with a resistor of some ten kOhms, or set the min-temp value for the extruder0 in firmware to '0'


Viktor
Re: Using Marlin and ramps for CNC
January 10, 2016 01:52AM
hello,
i did just that 2 weeks ago
i don t remember exactly how but i uploaded marlin via Arduino on my sanguinololu
in the code somewhere you can set minTemp 0 or desactivate it.
the hard part was that to upload anything via arduino, i had to use a very old version of arduino ide ...
Re: Using Marlin and ramps for CNC
April 19, 2016 09:31AM
Hello,
I have a question (maybe stupid): the Marlin code it is different for CNC as the one for 3D printing?
Re: Using Marlin and ramps for CNC
April 19, 2016 10:43AM
Yes, it was stupid... it IS different but until now it seem that all the sites I've searched are keeping this info secret...
Can someone point me to a place where I can eventualy download the modifyed Marlin?
Thanks in advance!
Re: Using Marlin and ramps for CNC
April 19, 2016 08:02PM
Make it easy on yourself and grab an Uno and CNC shield and just run grbl.
Re: Using Marlin and ramps for CNC
April 20, 2016 02:42AM
Thanks for your answer and you are correct but considering that I already have a 3D printer I thought it would be easier to try a modified Marlin for CNC (I would like to try out some PCB milling) ...
Re: Using Marlin and ramps for CNC
December 09, 2016 12:37PM
Quote
eugen360
Yes, it was stupid... it IS different but until now it seem that all the sites I've searched are keeping this info secret...
Can someone point me to a place where I can eventualy download the modifyed Marlin?
Thanks in advance!

why is it different?

i have a delta and using it as laser. i even tried to use it as cnc milling, but system wasnt stong enough even tho i tried to engreave .5 mm each time. you only need to right gcodes for it.

so i am saying u can use marlin+ramps for cnc. my plan is to do so.

but i have a question also, before starting milling i want to set 0,0,0 point on cnc, so it can start milling from that point, like the corner of material i put on cnc. almost every program for cnc are able to do it via pc, i tried few but i couldnt connect them to ardunio+ramps+marlin. anyone know a way to make it via pc or even better with some kind of lcd control panel?

thanks in advance

Edited 1 time(s). Last edit at 12/09/2016 12:38PM by okuzster.
Re: Using Marlin and ramps for CNC
December 27, 2016 02:02PM
Not sure how far you are with your projects, I have been using my DIY machine conversion for about a year swapping the boards back and forth has been a real pain. I have my normal RAMPS 1.4 with external drivers for printing. I have been swapping it over to a TinyG to run CNC Jobs. Over Christmas I was thinking about it and seems like the only reason I was swapping it back and forth was to get ability to zero out the Z axis and go negative. Did a little tinkering in my post processing CAM software and use G92 to zero out Z so I just set it at my zero point and run the gcode from my normal 3d printer software. Only other trick was in Marlin I had to allow negative movements for Z axis and bingo now I can print and CNC without switching out the boards. I have mine setup with the spindle and extruder mounted up together I just remove the ER-16 collet to use the printer.

Any converter plugins for Mach3 out there for an interface? I have used Chilipepper with my TinyG but pretty buggy and think that someone may have solved this problem already and have a USB mapping tool that would work to fake out Mach3 to think the its a Parallel port.
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