Re: [Emc-users] about to give up on the pi's

2017-05-05 Thread dragon
From my understanding, a straight Debian armhf distro install will run on the rPi 2 and rPi 3. It should also provide performance improvements over Raspbian. When Raspbian is built there are many compiler flags that are disabled for things like vector instructions, etc. This is for backward

Re: [Emc-users] about to give up on the pi's

2017-05-04 Thread dragon
In case you are interested I have tried both the AsRock Q1900-ITX and Q1900-M. Both have a par port header on the board and worked fine with a Pico Universal PWM card and had a very acceptable jitter even without trying to tweak things. I don't see why they wouldn't work with the 7i90 as well.

Re: [Emc-users] AMC seems to have removed all legacy manuals in last couple of days

2017-04-10 Thread dragon
I discovered this a few weeks back when they launched their new site. archive.org just generates an empty file with a .pdf extension so it was no help. I did find that you could still get to them from the European website... for now. On 04/10/2017 09:35 PM, Jon Elson wrote: > On 04/10/2017 08:32

Re: [Emc-users] Thoughts on extending the life of the microsd's.

2017-03-12 Thread dragon
aturday 11 March 2017 12:02:36 dragon wrote: >>>> I doubt that you will ever hit the end of life on a quality SD >>>> card, especially a large size one. The writes that you are doing, >>>> and thus the number of blocks, are TINY compared to what the cards >

Re: [Emc-users] Thoughts on extending the life of the microsd's.

2017-03-11 Thread dragon
I doubt that you will ever hit the end of life on a quality SD card, especially a large size one. The writes that you are doing, and thus the number of blocks, are TINY compared to what the cards were designed for... photos and videos. You can also run a flash file system instead of ext4 if you

Re: [Emc-users] Using a jog wheel to move through a gcode program

2017-03-07 Thread dragon
I don't know if I would find it useful but that is AWESOME! On 03/07/2017 12:35 PM, sam sokolik wrote: > There is a reverse run branch that rob created that allows you to do > negative adaptive feed. This and some hal bits an you can 'jog' through > a gcode program. Don't know if I would ever

Re: [Emc-users] Durable Paint [Was: gee, is list in anechoic chamber]

2017-03-07 Thread dragon
As for the Ag paints, I prefer Van Sickle it seems to have a bit better UV resistance but they are pretty close. I personally don't think any of them are much better than good 'ol rust-o-leum unless you use a hardener. The rust-o-leum seams to dry slower though. For the best of both worlds you can

Re: [Emc-users] damn radio shack

2017-03-07 Thread dragon
Yep, I was just in town yesterday and the rat-shack there is suddenly closing. They had 20-30% off storewide and 50% off everything in the parts drawers. Of course with the inflated prices and poor quality of most of their stuff that still isn't a good deal :P On 03/07/2017 08:06 AM, Stephen

Re: [Emc-users] Bridgeport servo troubleshooting

2017-03-04 Thread dragon
I would try putting the X drive connected to the Z motor in place of the Z drive. If it runs fine then you know that the servo motor, tach, encoder, and wiring into and out of the drive are all fine for the Z axis and thus the drive would have to be the problem. On 03/04/2017 11:37 AM, Ben

Re: [Emc-users] Need pyvcp-xml expert

2017-03-02 Thread dragon
Thornton wrote: > Hevetica works fine on Linux Mint 17.3... > > JT > > > On 3/2/2017 7:10 AM, dragon wrote: >> It might be because Helvetica is a long since gone font that I doubt is >> installed on your system. I have worked with another open source >> softwar

Re: [Emc-users] Need pyvcp-xml expert

2017-03-02 Thread dragon
Doh! Even I missed that. I still suggest choosing something other than Helvetica. On 03/02/2017 07:05 AM, John Thornton wrote: > Because you were tired and forgot the closing ) > ("Helvetica",12 < brokey > ("Helvetica",12) > JT > > On 3/2/2017 4:26 AM, Gene Heskett wrote: >> Greetings all; >>

Re: [Emc-users] Need pyvcp-xml expert

2017-03-02 Thread dragon
It might be because Helvetica is a long since gone font that I doubt is installed on your system. I have worked with another open source software project that has a bunch of legacy helvetica font selection hard coded into the C++. Boy that's a pain. Just pick a different font that you know is

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

2017-03-01 Thread dragon
velocity loop makes things much easier to tune. On 03/01/2017 12:08 PM, Jon Elson wrote: > On 03/01/2017 07:46 AM, dragon wrote: >> I have a project coming up soon that involves a retrofit of a Cel-Con >> HMC. The owner has a bunch of AMC BE25A20 drives to use on it. The

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

2017-03-01 Thread dragon
Ah... so in this case, the amplifier itself would do the inner velocity loop. The outer position loop is all that is expected from LinunxCNC then. On 03/01/2017 11:24 AM, Nicklas Karlsson wrote: > On Wed, 1 Mar 2017 07:46:24 -0600 > dragon <tfishw...@gmail.com> wrote: > >

Re: [Emc-users] Running servo amplifiers in velocity mode vs. torque mode

2017-03-01 Thread dragon
01, 2017 at 07:46:24AM -0600, dragon wrote: > >> better to run the servo amplifiers in velocity mode or torque mode. I > > I think the benefits of velocity mode are that it better tolerates > (still gives smooth motion with) low encoder resolution and low servo > cycle update rat

[Emc-users] PWM vs. analog input servo amplifiers

2017-03-01 Thread dragon
What are the advantages and disadvantages of using PWM input vs. analog input servo amplifiers? Unless I am mistaken, it looks like it is easier to drive the PWM input ones as they can be driven directly off of something like a Mesa 6i24 without the need for the additional analog interface card.

[Emc-users] Running servo amplifiers in velocity mode vs. torque mode

2017-03-01 Thread dragon
I have a project coming up soon that involves a retrofit of a Cel-Con HMC. The owner has a bunch of AMC BE25A20 drives to use on it. The servo motors are Fanuc red caps and we have some of Pico Systems' converters that give us the hall and encoder signals from the motors. I have been doing a

Re: [Emc-users] encoder Q too

2017-02-27 Thread dragon
On 02/27/2017 12:28 PM, Gene Heskett wrote: >> You can set the increments that 'i/I' will toggle through in the ini >> file. > Example? Or is that the global setting it now displays as a > multiselector when using the mouse to do fixed incrementals? > I am only aware of the global setting. It

Re: [Emc-users] encoder Q too

2017-02-27 Thread dragon
:57 AM, Jon Elson wrote: > On 02/27/2017 09:43 AM, dragon wrote: >> Not to say that I don't like using a handwheel encoder for what you are >> looking to do but after reading your mouse click comments I wondered if >> you are aware of the following keyboard shortcuts... >

Re: [Emc-users] encoder Q too

2017-02-27 Thread dragon
Not to say that I don't like using a handwheel encoder for what you are looking to do but after reading your mouse click comments I wondered if you are aware of the following keyboard shortcuts... <, >decrement or increment axis speed c/C select continuous jogging i/I select

Re: [Emc-users] Copley 513 internal header

2017-02-26 Thread dragon
. It doesn't look like they ever released a proper "manual" for the 513 on their website. I can't even find another model that has the same number of pins on that header, so I guess I will look for other drives. On 02/24/2017 08:34 PM, Jon Elson wrote: > On 02/24/2017 05:04 PM, dragon wro

[Emc-users] Copley 513 internal header

2017-02-24 Thread dragon
Copley has a data sheet available for the 513 but it does nothing more than mention the internal header. I contacted them and they said that they are unable to help out with anything that old. Does anyone have info on the internal header that is used for some of the settings, and the equations or

Re: [Emc-users] VFD recommendations

2017-02-22 Thread dragon
. If it does, I think I can figure out the modbus-to-hal details to get it to work. Thanks! On 02/01/2017 08:35 PM, dragon wrote: > I want to start looking for VFDs for my lathe and mill conversions. I > have two 2hp 3 phase motors to use for the spindles. Of course if I came > acr

Re: [Emc-users] vfd compatibility

2017-02-15 Thread dragon
The 20ma control circuit on the VFD is an analog control, where as the parallel port pin is a digital (on/off) signal. You will need some sort of hardware interface between the two to do a digital to analog conversion. On 02/15/2017 12:36 PM, Valerio Bellizzomi wrote: > On Wed, 2017-02-15 at

Re: [Emc-users] VFD recommendations

2017-02-15 Thread dragon
://wiki.linuxcnc.org/cgi-bin/wiki.pl?VFD_Modbus and the HY series of Huanyang drives? Thanks again everyone! On 02/05/2017 01:55 PM, dragon wrote: > So it looks like perhaps only the 7.5kW model is the new GT series. I > don't need anything near that big so if I go with the Huanyang I would > b

Re: [Emc-users] Changing the full scale range the pyvcp tach displays

2017-02-09 Thread dragon
I would sense the RPM directly at the spindle... not at the motor. Then use gearchange so that the system knows what range you are in to send the VFD the correct signal for wanted speed. Sensing at the motor doesn't account for belt slip either, and that would make rigid tapping iffy IMHO. just

Re: [Emc-users] need a tutorial on 3 phase, 1.2 degree a step, motors

2017-02-06 Thread dragon
counters for your spindle if you so choose. A 7i42TA, or many other options, will get you home, limit, and estop switches and any needed outputs. On 02/06/2017 12:28 PM, Gene Heskett wrote: > On Monday 06 February 2017 08:27:11 dragon wrote: > >> Tormach has a pretty good white

Re: [Emc-users] need a tutorial on 3 phase, 1.2 degree a step, motors

2017-02-06 Thread dragon
-60 IPM. After some upgrades and the voltage was bumped to about 100v it now runs at 150 IPM and would likely go faster but that was more than fast enough for the owner. On 02/06/2017 10:57 AM, dragon wrote: > Very true Todd. I relied on advice from others who have been there, done > that.

Re: [Emc-users] need a tutorial on 3 phase, 1.2 degree a step, motors

2017-02-06 Thread dragon
know about a servo before you buy it? > > - Original Message - > From: "dragon" <tfishw...@gmail.com> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Sent: Monday, February 6, 2017 10:15:36 AM > Subject: Re: [Emc-u

Re: [Emc-users] need a tutorial on 3 phase, 1.2 degree a step, motors

2017-02-06 Thread dragon
for the increased performance. On 02/06/2017 08:48 AM, John Thornton wrote: > Do you have a link to the $40 servo and $50 drive? All I can find on > fleabay is $52 and up for the servo + $26 to $32 for shipping. > > JT > > > On 2/6/2017 7:27 AM, dragon wrote: >> On

Re: [Emc-users] need a tutorial on 3 phase, 1.2 degree a step, motors

2017-02-06 Thread dragon
Tormach has a pretty good white paper on why they chose to use 3 phase steppers on their machines. I found it a great read for future reference even though I was going to use servos anyway. On another note... you can get E661 servos with encoders off of ebay for $40 to your door and they are a

Re: [Emc-users] VFD recommendations

2017-02-05 Thread dragon
since the driver has HAL pins to report most of the parameters would it be possible to calculate the spindle load? On 02/03/2017 10:06 AM, Sebastian Kuzminsky wrote: > On 02/03/2017 07:34 AM, dragon wrote: >> I just re-read this... If modbus is correctly implemented in the GT >> se

Re: [Emc-users] VFD recommendations

2017-02-03 Thread dragon
I just re-read this... If modbus is correctly implemented in the GT series, could you just use MB2HAL? On 02/02/2017 10:51 AM, Sebastian Kuzminsky wrote: > On 02/02/2017 09:34 AM, Kirk Wallace wrote: >> On 02/02/2017 07:02 AM, Sebastian Kuzminsky wrote: >> >> ... snip >> >>> 2. The LinuxCNC

Re: [Emc-users] VFD recommendations

2017-02-03 Thread dragon
If you think that a driver is doable and not far off, it probably doesn't really matter which version I get. For my use I could just manually control spindle speed until the driver is ready. On 02/02/2017 04:21 PM, Sebastian Kuzminsky wrote: > On 02/02/2017 03:04 PM, dragon wrote: >> h

Re: [Emc-users] VFD recommendations

2017-02-02 Thread dragon
how do you tell the difference between the older models and the GT series? I don't see an actual model number on most of the ebay listings On 02/02/2017 10:51 AM, Sebastian Kuzminsky wrote: > On 02/02/2017 09:34 AM, Kirk Wallace wrote: >> On 02/02/2017 07:02 AM, Sebastian Kuzminsky wrote: >>

Re: [Emc-users] VFD recommendations - braking resistor vs mechanical brake.

2017-02-02 Thread dragon
Ed Fanta does rigid tapping on his CHNC. I don't believe that he has a breaking resistor on the VFD even. IIRC I watched the output of the SPINx1 and it just goes from a + voltage to a - voltage and does not "stop" he does have a fairly high line count BEI(?) encoder on the spindle. It works very

Re: [Emc-users] Tida_TD-1336_lathe

2017-02-02 Thread dragon
Kirk, I forgot to mention that I read somewhere online that it is actually common for the back gears to get broken on these lathes. It comes from user error. There is a threaded pin on one of the spindle gears that you need to engage and disengage. If you keep it engaged while you have the

Re: [Emc-users] VFD recommendations

2017-02-02 Thread dragon
I did notice those on ebay and had seen that there was a driver for them. The price is very tempting. Especially since these are not mission critical or production machines. On 02/02/2017 04:27 AM, andy pugh wrote: > On 2 February 2017 at 02:35, dragon <tfishw...@gmail.com&

[Emc-users] VFD recommendations

2017-02-01 Thread dragon
I want to start looking for VFDs for my lathe and mill conversions. I have two 2hp 3 phase motors to use for the spindles. Of course if I came across a 3hp for the lathe some day it might get upgraded. Are there any drawbacks to using MODBUS instead of the usual analog 10v interface? Does anyone

Re: [Emc-users] Tida_TD-1336_lathe

2017-02-01 Thread dragon
Kirk, You have a big brother of the lathe that followed me home! It literally followed me on a trailer ;) Your's does look in rough shape. It is a 1979 Jet 1024P made in Taiwan. It came with a companion, a 1980 Jet JVM-626 benchtop knee mill. While old and definitely used, mine were very well

Re: [Emc-users] Voltage/Motor RPM Relationship with Brushless Drives

2017-01-25 Thread dragon
Steve, From my, albeit somewhat limited, experience I don't think that you will be that happy with the performance of running the drives at that voltage. I have some experience with running brushed motors at just over half voltage and then later going to full voltage on the same machines. Running

Re: [Emc-users] nema 24 motors.

2017-01-24 Thread dragon
e lots of $$$. > > > > Danny > > dragon <tfishw...@gmail.com> wrote: >> I hate to say it but I'm with Ed on this one. I just paid $32 each for >> e661 servos WITH encoders to put on my 10x24 lathe and Jet 626 mill. >> Grab a free thrown out PC and get rid of the noise

Re: [Emc-users] nema 24 motors.

2017-01-24 Thread dragon
I hate to say it but I'm with Ed on this one. I just paid $32 each for e661 servos WITH encoders to put on my 10x24 lathe and Jet 626 mill. Grab a free thrown out PC and get rid of the noise problems from that SPI bus on the rPi. Analog input drives can be had on ebay for $35, especially if you

[Emc-users] Electrocraft e240 specs

2017-01-07 Thread dragon
I am converting over a little 10x24 lathe and benchtop knee mill. These are just machines for home/hobby use to they don't need to be blazingly fast or run for 16hrs. a day. I got some e661 DC servos for the mill X,Y, and Z and for the Z on the lathe. I was thinking of something smaller though

Re: [Emc-users] update from 2.8 pre ja9 to latest on ubuntu 10.04 ... pyton3 problem??

2016-10-28 Thread dragon
I would say likely not since Ubuntu 10.04 has a much older build tool stack and the kernel, GCC, python, support libraries, etc. are all much older. On 10/28/2016 08:09 AM, giorgio foga wrote: > Thanks a lot but is possible to upgrade via builbot whitout problem. > > regards > >

Re: [Emc-users] LinuxCNC and a Consumer Product

2016-10-25 Thread dragon
The Allwinner H3 is a quad core ARM processor... not intel. While the orange Pi claims 100% compatibility with the raspberry Pi add-ons there are reports of a few incompatibilities. Also note that it does have a different graphics core and I think a different ethernet core as well and not all of

[Emc-users] It was a great LinuxCNC Fest!

2016-10-24 Thread dragon
Just wanted to send out a big thanks to Stuart and the rest of the Helix Machine team for hosting us. I would also like to thank all of the other attendees for the knowledge and patience that they shared. I learned a lot and look forward to next year. -Todd signature.asc Description: OpenPGP