> -----Original Message-----
> From: N [mailto:nicklas.karlsso...@gmail.com]
> Sent: August-31-20 9:21 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Tool presetter
>
> > I have one of these.
> > Fowler 54-575-600 Electronic Edge Finder with Cylindrical Tip, 0.200"
> > Stylus, 1/2" Shank
> >
> > I use it with the Shumatech DRO to find edges or the center of something
> > round. The DRO-350 has a feature for that. Eventually
> I'll wire up a cable that can be sensed by LinuxCNC to detect the edge
> automatically.
>
> Was also thinking about a cable, however need to connect it each time
> otherwise tool changer will slowly turn it into a twisted cable.
> Expect they are more or less equally good as 3D taster but much cheaper.
>
Nicklas
You make a good point. It should be possible to make some sort of holder which
fits around a TT mill holder shank. The holder could have a small Blue Tooth
Low Power module that signals contact.
The issue might be response time. Or noise that delays the contact signal
long enough to break the probe.
All that is required then is a battery and we really don't want it powered all
the time. So that's another issue that needs to be addressed. Since the TT
holders are pressed against the spindle for repeatability some sort of switch
in the holder could also turn it on.
For other types of holders that use the draw bar to pull in the holder, the
center pull tab could potentially be the connection that closes the circuit.
John Dammeyer
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