On 2/23/2014 2:38 PM, Jared Turner wrote:
> So I think I have the hardware setup - but now I'm confused on how to
> actually setup PWM to control an axis. I noticed that the .hal file
> has some PWM instances at the bottom, but they seem to be set for
> heaters. Should repurpose one of these or cre
So I think I have the hardware setup - but now I'm confused on how to actually
setup PWM to control an axis. I noticed that the .hal file has some PWM
instances at the bottom, but they seem to be set for heaters. Should repurpose
one of these or create a new one? How do I create a new one, refer
On Sun, Feb 16, 2014 at 3:15 PM, MC Cason wrote:
>
> Gene,
>
>I did a quick rendering of it, to show you what it should look like:
>
> http://www.flickr.com/photos/46689581@N03/12571498435/in/set-72157631724417372
>
> http://www.flickr.com/photos/46689581@N03/1257155/in/set-72157631724417
On 02/16/2014 05:10 PM, Gene Heskett wrote:
> On Sunday 16 February 2014 18:06:54 MC Cason did opine:
>
>
> Board looks neat on both sides, but doesn't it need mounting holes?
>
> And are you intending to make a few finished ones? If it is linear, that
> would sure beat Leonardo's C-41.
>
> Cheers
On Sunday 16 February 2014 18:06:54 MC Cason did opine:
> Gene,
>
>I did a quick rendering of it, to show you what it should look like:
> http://www.flickr.com/photos/46689581@N03/12571498435/in/set-72157631724
> 417372
> http://www.flickr.com/photos/46689581@N03/1257155/in/set-7215763172
On Sunday 16 February 2014 17:31:17 MC Cason did opine:
> On 02/16/2014 01:16 PM, Gene Heskett wrote:
> > PS, can open the .sch, but not the .brd, my free license is not
> > enough.
> >
> > OTOH, I am getting by with what I am using ok, so its not life &
> > death.
> >
> > I need some felt washe
Gene,
I did a quick rendering of it, to show you what it should look like:
http://www.flickr.com/photos/46689581@N03/12571498435/in/set-72157631724417372
http://www.flickr.com/photos/46689581@N03/1257155/in/set-72157631724417372
On 02/16/2014 01:51 PM, MC Cason wrote:
> I don't know
On 02/16/2014 01:16 PM, Gene Heskett wrote:
> PS, can open the .sch, but not the .brd, my free license is not enough.
>
> OTOH, I am getting by with what I am using ok, so its not life & death.
>
> I need some felt washers, about 1/8" thick uncompressed, 1/4" center holes,
> and trimmable to about
On Sunday 16 February 2014 14:01:42 Gene Heskett did opine:
> On Sunday 16 February 2014 13:50:38 MC Cason did opine:
> > On 02/16/2014 12:31 PM, Gene Heskett wrote:
> > >> I'm using Firefox in Mint 16, and I downloaded the entire site
> > >> as a
> > >>
> > >> zip file. Eagle v6.4.0 had
On Sunday 16 February 2014 13:50:38 MC Cason did opine:
> On 02/16/2014 12:31 PM, Gene Heskett wrote:
> >> I'm using Firefox in Mint 16, and I downloaded the entire site as
> >> a
> >>
> >> zip file. Eagle v6.4.0 had no problems opening the files.
> >
> > Eagle-6.5 here but that shouldn
On 02/16/2014 12:31 PM, Gene Heskett wrote:
>> I'm using Firefox in Mint 16, and I downloaded the entire site as a
>> zip file. Eagle v6.4.0 had no problems opening the files.
> Eagle-6.5 here but that shouldn't make any difference. I'll go back and
> get the .zip file. I had grabbed it with
On Sunday 16 February 2014 13:12:27 MC Cason did opine:
> On 02/16/2014 11:26 AM, Gene Heskett wrote:
> > On Sunday 16 February 2014 12:22:12 N. Christopher Perry did opine:
> >> I've developed a circuit just for this application:
> >> https://dl.dropboxusercontent.com/u/34705319/Spindle Drive Int
On 02/16/2014 11:44 AM, MC Cason wrote:
> On 02/16/2014 11:26 AM, Gene Heskett wrote:
>> On Sunday 16 February 2014 12:22:12 N. Christopher Perry did opine:
>>
>>> I've developed a circuit just for this application:
>>> https://dl.dropboxusercontent.com/u/34705319/Spindle Drive Interface
>>> Schema
On 02/16/2014 11:26 AM, Gene Heskett wrote:
> On Sunday 16 February 2014 12:22:12 N. Christopher Perry did opine:
>
>> I've developed a circuit just for this application:
>> https://dl.dropboxusercontent.com/u/34705319/Spindle Drive Interface
>> Schematic.pdf
>>
>> It does a fairly decent job. It
>>N. Christopher Perry
Looks great, you don't happen to have HAL code for that do you? I want to try
milling PBCs with the mill - so I'll pass on buying a board for now. (might hit
you up later if its not accurate enough :S) Thanks for the schematic!
---
Nice... I didn't know that board or the other little adapter boards on
the same page existed..
That's a lot easier than wrestling with a Modbus link just for a spindle..
Thanks for the pointer..
Dave
On 2/16/2014 11:42 AM, Andy Pugh wrote:
>
>> On 16 Feb 2014, at 09:09, Marcus Bowman
>> wrot
On Sunday 16 February 2014 12:22:12 N. Christopher Perry did opine:
> I've developed a circuit just for this application:
> https://dl.dropboxusercontent.com/u/34705319/Spindle Drive Interface
> Schematic.pdf
>
> It does a fairly decent job. It gets within ~0.5% of full scale on both
> ends and
> On 16 Feb 2014, at 05:07, Jared Turner wrote:
>
>> I'm still working with trying to get programatic speed control from my BBB.
>> My driver requires a 0-10v signal or a 10k pot to control speed.
>
You could try feeding PWM from the BBB to an RC integrator,
and then amplify
that to feed the vol
> On 16 Feb 2014, at 09:09, Marcus Bowman
> wrote:
>
> Surely it shouldn't be too hard for the electronics chappies to produce a
> board which responds to a digital (command) input and outputs a programmable
> voltage up to, say, 20 volts.
Have a look at the Mesa SPINX board.
---
I've developed a circuit just for this application:
https://dl.dropboxusercontent.com/u/34705319/Spindle Drive Interface
Schematic.pdf
It does a fairly decent job. It gets within ~0.5% of full scale on both ends
and has a linearity error of ~0.5%. In addition it has a couple of opto
isolated
Marcus
Most VFD's have a serial communicatiuons interface that normally comply
with the MODBUS protocol. And these days most of them have a USB
interface so you just plug in and communicate to them.
You will find the comms requirements in the manual. Normally the last
section in the book. I hav
On 16 Feb 2014, at 05:07, Jared Turner wrote:
> I'm still working with trying to get programatic speed control from my BBB.
> My driver requires a 0-10v signal or a 10k pot to control speed.
Interestingly, although these systems are designed around a 10 volt swing, I
have measured the swing on
I'm still working with trying to get programatic speed control from my BBB. My
driver requires a 0-10v signal or a 10k pot to control speed. Had to take a
break from this - schoolwork is kinda inconvenient at times - found out my
digital pot can't work for 10v signals... so I'm thinking about im
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