On Tuesday 20 June 2017 13:03:01 EBo wrote:

> On Jun 20 2017 10:47 AM, andy pugh wrote:
> > On 20 June 2017 at 17:27, Bertho Stultiens <[email protected]>
> >
> > wrote:
> >> It should work, but it is not "nice". There are several problems,
> >> especially wrt. the RPi outputs. How did the design perform in the
> >> real
> >> world?
> >
> > Hard to tell, this was a few years ago and using a kernel of unknown
> > quality.
> > As in, it didn't work well when I tried it with a software stepgen
> > at Wichita, but there were many other possible explanations for the
> > issues.
>
> Anyone tried it with the new RPi-3's?

I am running it quite well on the the r-pi-3b's, newer single spi 
interface on 3/4 ton of old Sheldon lathe.  I say newer because the 
hm2_rpspi.so driver I am running has grown some additional legs by 
Bertho S. and was just accepted into master.  It (the raspi-3b)  is 
kernel picky though, bad keyboard and mouse missfires with the newer 
kernels like the 4.9.x. from Frank Durr.

4.4.4-rt9-v7+ is working the best here ATM.  With a Mesa 7i90 in the 
bottom of the pile, and 3 7i42TA's on top for surge suppression and 
noise filtering to protect the 3.3 volt 7i90, not to mention giving us a 
decent place to terminate all the wires, I seem to be ready to rock & 
roll.  I am collecting tooling, and considering a 4 jaw chuck, and I've 
already made some of its parts to cnc it, on it.  I have the 3 jaw 
within about 1.5 thou of true, lots better than it was when we horsed it 
out of the cargo van here a year ago.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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