Hi all; new guy here; some pretty basic questions.
Bit of a long winded post - things that I think I might find helpful 1) Links to - buy this kit; once you’ve got it setup; you’ll be well on your way. (I’m in Europe) 2) Blogs which will help me build my understanding of any of the below 3) Any answers or corrections on any of the below.
My goal is to build a ‘hobbyist’ CNC machine that can mill a circle out of a block of foam.
I feel like I’m not quite understanding the key differences in the implementation of a 3d printer and a CNC machine. My brain is trying to tell me - they are the same; because they both require running a sequence of g-codes.
I guess I’m not miles off - as http://reprap.org/wiki/G-code states: RepRap firmwares are quite usable for CNC milling”
Seems like a Uno or a Mega is the correct starting point (for printing or CNC) But - then grbl is the software for CNC; as opposed to Marlin for printing However; I understand parts of Marlin are based on grbl. What makes grbl ‘better’ for CNC? Does it just avoid some of the extra’s that come with Marlin that aren’t needed? Or do the CNC controlling systems speak to grbl easier?
And then; I either need EasyDriver V4.4 or the Grbl Shield. Does the EasyDriver limit anything? Or is it mostly more setup? As I have to wire up 3.
The printing equivalent here is Ramps + Pololu Drivers (which was ‘inspired’ by EasyDriver) but as I understand they aren’t ‘out the box’ compatible? Although there is http://sourceforge.net/projects/grblforramps14/.
Is the main reason for the Pololu Driver being separate from the Ramps board; for easy replacement when the Pololu driver burns out?
Once I get to turning my stepper - Ramps and EasyDriver are compatible with any bi-polar stepper.