BTW, Check out
https://lsicsi.com/datasheets/LS7366R.pdf
This device is interfaced via SPI and has a 32 bit quadrature counter module.
If you go in the direction of Raspberry Pi with LinuxCNC a device like this can
provide the spindle information. So if someone was thinking of building a CNC
On Mon, 25 May 2020 at 10:42, Chris Albertson wrote:
> Ideally you have just one thin cable going from controller to the machine.
> If you like those chips just glue on on each encoder and turn then encoder
> into a serial interfaced device. Or use a serial buss so 6 encoders can
> share one
Yes, you can buy a hardware Quadrature chip. But any modern
microcontroller like the STM32 will have hardware quadrature decoders.
The larger versions of the chip will have multiple quadrature decoders.
The chip will also have SPI. These things cost under $1 or about $3 if
you want it on PCB
On Monday 25 May 2020 03:35:05 John Dammeyer wrote:
> BTW, Check out
> https://lsicsi.com/datasheets/LS7366R.pdf
> This device is interfaced via SPI and has a 32 bit quadrature counter
> module. If you go in the direction of Raspberry Pi with LinuxCNC a
> device like this can provide the
interesting, so how easy would it be to use a board/device like this in
linux-cnc?
if those are just a few $$$ it would be fun to mess with.
On 5/25/20 3:39 AM, Chris Albertson wrote:
Yes, you can buy a hardware Quadrature chip. But any modern
microcontroller like the STM32 will have
In the video I posted earlier (it's a year old)... the guy using that
chip says it cost him $40, he showed it on line for about $28.
(and that's just for the LS7366R by itself.)
https://www.youtube.com/watch?v=RLCPKa9SoF0
On 5/25/20 2:31 AM, Gene Heskett wrote:
On Monday 25 May 2020
I actually saw a youtube video where someone was using this chip. I
believe he said it was like $28, and you'd still need something to read/run
it with. (also, not running linux cnc on the pi, the little raspberry
pi project has nothing to do with my linux cnc machine, I just did that
to
On Monday 25 May 2020 06:50:16 andy pugh wrote:
> On Mon, 25 May 2020 at 10:42, Chris Albertson
wrote:
> > Ideally you have just one thin cable going from controller to the
> > machine. If you like those chips just glue on on each encoder and
> > turn then encoder into a serial interfaced
On Sunday 24 May 2020 18:15:44 Gene Heskett wrote:
> On Sunday 24 May 2020 13:41:07 Gene Heskett wrote:
> > On Sunday 24 May 2020 12:51:23 andy pugh wrote:
> > > On Sun, 24 May 2020 at 17:28, Gene Heskett
> >
> > wrote:
> > > > 'twouldn't be the first time an IDC cable was iffy
> > >
> > > ...
>
On 05/25/2020 11:01 AM, R C wrote:
In the video I posted earlier (it's a year old)... the guy
using that chip says it cost him $40, he showed it on
line for about $28.
(and that's just for the LS7366R by itself.)
This just doesn't make sense anymore. You can take a bottom
of the line
that's what I thought too, it's pretty expensive. (probably low
production runs etc., obsolete?).
I am actually trying to see how much I can push it by using a rpi for
that, that's about the same price.
Ron
On 5/25/20 1:07 PM, Jon Elson wrote:
On 05/25/2020 11:01 AM, R C wrote:
In the
On Mon, 25 May 2020 at 20:15, R C wrote:
> I am actually trying to see how much I can push it by using a rpi for
> that, that's about the same price.
An Arduino is possibly a better choice. You can get Nanos for about £5.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
> -Original Message-
> From: andy pugh [mailto:bodge...@gmail.com]
> On Mon, 25 May 2020 at 10:42, Chris Albertson
> wrote:
>
> > Ideally you have just one thin cable going from controller to the machine.
> > If you like those chips just glue on on each encoder and turn then encoder
>
Do anyone here have any suggestion for FERROR and MIN_FERROR values?
Regards Nicklas Karlsson
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never done anything with those, and have a few RPIs lying around
On 5/25/20 1:27 PM, andy pugh wrote:
On Mon, 25 May 2020 at 20:15, R C wrote:
I am actually trying to see how much I can push it by using a rpi for
that, that's about the same price.
An Arduino is possibly a better choice. You
> > be a good idea. There are also devices from the same manufacturer
> > that can change quadrature into up/down pulses streams to use regular
> > counters inside the Pi.
>
> But quadrature has one huge advantage over regular counters, you get both
> speed AND direction from every edge that
Yes but it is another level of development.
Sent from John's iPhone 4S
On 2020-05-25, at 12:07 PM, Jon Elson wrote:
> On 05/25/2020 11:01 AM, R C wrote:
>> In the video I posted earlier (it's a year old)... the guy using that chip
>> says it cost him $40, he showed it on line for about
On Monday 25 May 2020 18:33:29 Jon Elson wrote:
> On 05/25/2020 02:50 PM, N wrote:
> > Do anyone here have any suggestion for FERROR and MIN_FERROR values?
>
> It depends on your "user units", as well as the general
> accuracy and speed of the machine.
> FERROR is a multiplier to velocity in user
On 05/25/2020 02:50 PM, N wrote:
Do anyone here have any suggestion for FERROR and MIN_FERROR values?
It depends on your "user units", as well as the general
accuracy and speed of the machine.
FERROR is a multiplier to velocity in user units/second that
is added to MIN_FERROR.
MIN_FERROR is
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