On 2/4/22 13:06, Chris Albertson wrote:
On Thu, Feb 3, 2022 at 4:25 PM Andy Howell <a...@gamubaru.com> wrote:
Starting from scratch, I would likely stay away from parallel ports. Our
current CNC router's controller uses the parallel port, so that is what
I have to go with.
Buy an Ethernet Interfaced Mesa board for $89 and it has a DB25 connector
on the back that works just like a parallel port.
Then you can connect that DB25 to your $10 Chinese breakout board.
Basically, it is an Ethernet to Parallel port bridge, but what you end up
with for the $89 is two parallel parts that have *much* better performance
than a real parallel port.
The Mesa card would be a significant performance upgrade while still
allowing the CNC machine to keep its existing 25-pin parallel cable. Also
it opens up the option to use any computer, even if it does not have a
built-in parallel port. A $35 Raspberry Pi could even work (but you'd be
better off with any of those cheap Intel boards that have two Ethernet
ports. Or I'm sure you can find an older PC in someone's junk pile
Thanks, I will keep that in mind for future projects. Performance is not
really an issue for the CNC routers. 90% is what we cut is 0.062 or
0.090 aluminum sheet with 1/8" endmills. Can't take very aggressive cuts
with those. I might go for the Rpi for the tiny CNC we want to retrofit.
Not even sure what motors it has. Its been sitting in the corner under a
plastic sheet, waiting for me to find a roundtoit.
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