On 9/5/20 11:46 AM, John Dammeyer wrote:
Or that they were cheap and were installed on a tablet that seems to be
ubiquitous these days. Unfortunately, the interface, both input and
output systems in the tablets leave a lot to be desired in the context
of a machine shop, at least from what I've seen of tablets. I just
don't want to depend on wireless communications to control a machine
that can hurt me or someone else or cause other kinds of damage.
Need to send message periodically to keep machine moving and no risk picking up
noise or signal from somewhere else. Probably
need some kind of encryption and randomness to solve this. On top of this are
the ordinary risk what happen then something fails,
used long enough and it will sooner or later, at least me quite often use
things until they break.
There will be many who use these and state there is no problem.
https://www.banggood.com/Machifit-Wireless-Electronic-CNC-Handwheel-MACH3-6-Axis-Pulse-Pendant-MPG-for-CNC-Engraving-Machine-p-1365963.html
OTOH, I have one of these because I don't trust wireless for running the
machine.
https://www.aliexpress.com/i/32844453793.html
I don't even trust myself running the machine as a gouge in the vise will
attest. But there was support for it and it works reasonably well.
http://linuxcnc.org/docs/html/man/man1/xhc-hb04.1.html
Again with the dual boot PC and either MACH3 or LinuxCNC.
John
John,
You sort of made my point. That banggood product is made for a small
engraving machine that someone could run on their kitchen table. I'd
like to think Sam's machines are a wee bit different and would require
an industrial strength controller like LinuxCNC. I've never seen an
industrial MPG using wireless or bluetooth to control a machine. Not
saying there may be none out there, but every instance I've ever seen
they are hardwired into the machine.
I think that's kind of the point some folks seem to be missing here.
The original reason for EMC was to create an industrial strength
controller to control CNC machines. That folks have been able to adapt
LinuxCNC to run hobby machines is a bonus and has increased the
popularity of the control software. If folks want to modify it further
to run on other platforms for their hobby enjoyment that's all well and
good. But to expect the developers to change the software completely
away from it's original and ongoing vision without putting skin the game
to me is just a little bit incredulous. Folks seem to clamor quite a
bit how all this is going to die out and we need to change this, that
and every other thing to enable all these other platforms. Yet, none of
them seem to want to grab the software and change it to their wants or
needs. It always seems the developers must change their wants. Tormach
proved that wasn't necessary.
Mark
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