[olug] Linux CNC 2.6.4
olug at unfy.org
Tue Dec 2 17:14:35 CST 2014
Breakout board arrived yesterday.
LinuxCNC 2.6.4 bootable dvd popped into a random machine with LPT port
here at work. Configure interface (this pin does what, and what's the
timing)... and BAM! it works.
Well, at least - a single motor connected to a driver and then the
breakout board works :D.
Looks like LinuxCNC is more or less an 'engine'. You need certain cad /
etc software to generate the gcode you feed into it. You *can* write it
from scratch (dust off them childhood LOGO turtle moves)... but... that
seems tedious imho. There's plenty of 2D "Cam" software / tools out
there, and a few OSS etc tools.
On 11/22/2014 1:00 AM, unfy wrote:
> Am gonna be building a CNC of sorts soon.
> Next week the rest of the electronics should come in (generally) and
> can start fiddling with the software & electronics.
> Went the dumb-lpt port based route and linuxcnc. Wanted linuxcnc
> because, well, this seems like the ideal application of linux
> (embedded stuff, servers, etc).
> I'll prolly be getting an HP DC7600 (or something that's got a model
> similar to that) to run the thing. It's a p4 and stuff, but a
> coworker has plenty and it seems appropriate to re-purpose one instead
> of dumpster/recycling.
> Anyone have any hints or suggestions from anyone that has any linuxcnc
> experience ?
> I don't expect problems, but ya never know.
> For the OT bits - planning on either a 12x12 bed or a 12x12 cutting
> area. I dunno. An example:
> There's plenty of designs that follow this style of moving the entire
> gantry along the X axis (or Y, whatever).
> Although a moving bed design is prolly better for such a small
> machine, I'm building a small version of the design to see how it all
> works when it comes time to scale it to 4'x4' or 8'x4' etc. I've only
> got 76oz-in nema17's at the moment so there's some concern if they'll
> be strong enough for even the small design. We'll see :D.
> I'll continue to use the small scale machine down the road - want
> something in my apartment to auto drill holes in PCB's or cut out
> smaller parts etc. Will be building a sound proof box around it and
> dust collection system etc.
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