[olug] Linux CNC 2.6.4

[unfy]

Holiday party ?

On 12/2/2014 7:24 PM, Rob Townley wrote:
> Cool are you going to the holiday party?
> On Dec 2, 2014 5:15 PM, "unfy" <olug at unfy.org> wrote:
>
>> 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:
>>>
>>> http://cdn.instructables.com/F0P/DZA6/GP7IFA3Y/F0PDZA6GP7IFA3Y.LARGE.jpg
>>>
>>> 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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>>>
>>>
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