Re: [Emc-users] LCNC TED Talk style

2017-06-15 Thread Florian Rist
Hi Sven, here is short video of a art project of one of my students, Maria Manske: https://vimeo.com/148933185 The six axes are controlled by a BBB and LinuxCNC. See you Florian -- Check out the vibrant tech

Re: [Emc-users] Koerner retrofit

2017-02-20 Thread Florian Rist
Hi Peter > Windows 95 / 98 is MS-DOS with a graphic user interface on top. Yes, I remember. The Körner controller ran as a Windows GUI program, AFAIR. > There was a boot option to start with DOS and then start Windows > manually afterwards from the command line, calling c:\windows\win.exe. >

Re: [Emc-users] Koerner retrofit

2017-02-20 Thread Florian Rist
Hi Sven > That's a feature I really want in LCNC! Me too. > Problem is it's outdated. I can only feed it with a floppy disc. Hmm, even if it's running DOS you could at least update to USB. There is a USB driver that makes USB flash drives available as a CD drive to USB. It works quite well,

Re: [Emc-users] Koerner retrofit

2017-02-18 Thread Florian Rist
Hi Sven > The computer is still working so I will see if I can dig out > any config from it. If the PC is still working, why not use the original controller software. It's actually not bad and it has a nice feature that LinuxCNC does not have: You can jog using the job wheel along the path of

Re: [Emc-users] Question on Renishaw MP3 IR probe

2016-10-03 Thread Florian Rist
Hi Hubert > Renishaw replied that it used a 12 volt rechargeable Oh, that sounds unusual and impossible to get in that form factor. Thanks for the update Flo -- Check out the vibrant tech community on one of the

Re: [Emc-users] Question on Renishaw MP3 IR probe

2016-10-01 Thread Florian Rist
Hi Hubert > Does anybody know what batteries a Renishaw MP3 IR probe with a round > battery compartment uses. All the current literature shows a > compartment with 2 9-volt batteries. The OMP40 (and some other probes as well) uses two 1/2 AA 3.6V lithium batteries. These batteries are about

Re: [Emc-users] Best way to jog all three axis using a single push button?

2016-09-29 Thread Florian Rist
Hi I just tried to link all three axis: net emcmot.00.pos-cmd axis.0.motor-pos-cmd=> pid.0.command net emcmot.00.pos-cmd => pid.1.command net emcmot.00.pos-cmd => pid.2.command That seams to work. I can't home any more, but for now that's good enough. Thanks for your super quick support.

Re: [Emc-users] Best way to jog all three axis using a single push button?

2016-09-29 Thread Florian Rist
Hi Andy, thanks for the suggestion: > Connect the buttons to the halui.jog.N.minus and halui.jog.N.plus pins That is indeed very easy. I just tried this. It kind of works. Unfortunately the axis do not move fully synchronized. X starts first, a fraction of second later y start to turn and y

Re: [Emc-users] Best way to jog all three axis using a single push button?

2016-09-29 Thread Florian Rist
Hi John > Do you need/intend to use g-code at all for this installation? Yes. And I'm now just trying to modify it quickly to do a manual demonstration. Could I do something with the axis jog pins: axis.0.jog-vel-mode axis.0.jog-enable axis.0.jog-scale > I have a few custom HAL

[Emc-users] Best way to jog all three axis using a single push button?

2016-09-29 Thread Florian Rist
Hi, just a simple question: I need to add two momentary switches to a 3 axis machine (not a mill, more like a art installation) that jog all axis (xyz). Press one button all axis move up, press the other one all move done in sync. Whats the best way to do this. The three axis are moved by

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-09-25 Thread Florian Rist
Hi Sarah > anyone suggest a better infra red detector than the AX-1838HS Jon Elson uses a QSE159 [1]. I bought a few, but I did not find the time to test it. See you Florian [1] https://www.fairchildsemi.com/datasheets/QS/QSE159.pdf

Re: [Emc-users] Accessing a Signal using the Python HAL Interface?

2016-09-23 Thread Florian Rist
Hi, thinks more or less work now, but I'd like to have LinuxCNC take care of homing and limits. Here's what I did: I disconnected the axis axis.3.motor-pos-cmd pin from the emcmot.03.pos-cmd signal and connected a pin of my new component. I set FERROR and MIN_FERROR to 999. Now I can

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-09-20 Thread Florian Rist
Hi Sarah > i'm looking at my renishaw probes... I don't know much about the Renishaw siganls jet. I want to take a closer look, but didn't find the time yet. However I thought I quickly mention that, at least my Renishaw probe has two different modes of operation, one compatible with the

Re: [Emc-users] Accessing a Signal using the Python HAL Interface?

2016-09-20 Thread Florian Rist
Hi, thank you all for you help. > A pin created by a python userspace component can be linked to a signal > with the "net" command, just like any other HAL pin. I thought about that, but I could not find 'net' command. Can this be done from the Python script without calling halcmd? I just

Re: [Emc-users] Accessing a Signal using the Python HAL Interface?

2016-09-20 Thread Florian Rist
Hi Sebastian > My guess is you won't get smoother motion by bypassing the G-code > interpreter and going directly to HAL, but you can try. Well calling halcmd is allready much better than the MDI approach, and I guess using the Python interface and eliminating the system call would improve

Re: [Emc-users] Accessing a Signal using the Python HAL Interface?

2016-09-20 Thread Florian Rist
Hi John, thanks for you message. > You can control with the python interface. > http://linuxcnc.org/docs/2.7/html/config/python-interface.html That refers to the LinuxCNC Python interface, but that does not give me access to HAL, right? I tried to implement my sensor following thing using MDI,

[Emc-users] Accessing a Signal using the Python HAL Interface?

2016-09-20 Thread Florian Rist
Hi, I'm trying to control an axis position using an user space Python script, but I don't relay understand the Python hal library. So, I want to use Python to periodically set the command position of an axis (3 in my case) based on a sensor read out. To do so I disconnected

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-09-08 Thread Florian Rist
Hi Jon > Yes, I thought about building a receiver out of various > parts, but there are application specific parts that combine > all this in one unit. Most are made with 38 KHz band pass > filters for VCR remote controls, Yes, that's why I didn't even look into theses integrated devices. >

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-09-07 Thread Florian Rist
Hi Jon, thanks for the update on your experiments, very interesting. > I still need to build a better IR transmitter and receiver > so that can be more than a few inches from the probe. Regarding the receiver I have not built anything yet, but when I was looking for information on this subject

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-08-18 Thread Florian Rist
Hi Jon > Thanks, not sure it corresponds. Here is one that should fit: http://www.modmash.nnov.ru/prod/blumdl/umtc.pdf It explicitly covers the P03.5000-010-A2 (that's the type number of a TC50 probe, second generation), BUT it is in Russian. :-) See you Flo

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-08-17 Thread Florian Rist
Hi Jon > And, the info available from Blum is only > sales info, with no user manual or anything that > I can find. I had a quick look and fond a lot of info on the TC60. Its identical to the TC50 except it uses radio instead of IR. The features, LEDs, etc. should be the same, I guess. Here

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-08-13 Thread Florian Rist
Hi John > http://gnipsel.com/images/touch-probe/touch-probe-01.jpg > http://gnipsel.com/images/touch-probe/touch-probe-02.jpg Thanks for the images. That's surprisingly simple. I would have expected that much higher surface quality on the contacts is needed. Interesting. My guess would be be

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-08-12 Thread Florian Rist
Hi Rene > I can provide dumps of OMM, OMI, Mahrpos and Heidenhain turn-on codes > if anyone is interested. Yes, I'd b interested, especially in OMM and OMI. See you Flo -- What NetFlow Analyzer can do for you?

Re: [Emc-users] snagged touch probe on eBay - anybody know how to interface ?

2016-08-12 Thread Florian Rist
Hi Sarah > i had the same problem with a Renishaw ir probe , so i reverse > engineered the ir protocol Oh, and did you publish your findings somewhere, or could you post them here? I'd be really interested, because I have a Renishaw probe but I don't have the receiver (OMI). Well actually I

Re: [Emc-users] Curing Oven

2016-08-04 Thread Florian Rist
Hi Ricardo > Take care that normal ssr as those (cheaper) i know doesnt like been > driving as an igbt :). Yes, and unfortunately (as already mentioned in another post) SSRs tend to short out when failing, unlike contactors. I'm not jet sure what to use for my oven, the good thin is, that this

Re: [Emc-users] Curing Oven

2016-08-03 Thread Florian Rist
Hi John > I just scanned (real quick) the pdf and didn't see where you could > store > multiple recipes, did I miss something? On page 22 it reads: "According to users' requirements, instruments with 10×8-segments (patternnumber: 0~9) or 6×16-segments (patternnumber: 0~5) can be chosen." So

Re: [Emc-users] Curing Oven

2016-08-03 Thread Florian Rist
Hi > Different ramp times, or different set temps, or both? Some of the > controllers allow you to store multiple settings. An example of such a controller is the PC410. I ordered one just a few days ago from Aliexpress [1]. Here is the manual:

Re: [Emc-users] Cutting tool fingernail style need

2016-02-21 Thread Florian Rist
Hi Gene, making the tool sounds feasible, but I have a last link: http://www.amanatool.com/products/router-bits/profiling-router-bits/corner-beading-router-bits.html http://www.amanatool.com/products/router-bits/profiling-router-bits/bullnose-router-bits.html And the overview here:

Re: [Emc-users] Cutting tool fingernail style need

2016-02-20 Thread Florian Rist
Hi Gene > Way above my pay grade. :( And still the ends of the cutters are at 90 > degrees. Did you ask a manufacture for a custom ground cutter? I had several end mills custom ground to my specifications by Wedco. I only had to specify the contour shape, in my case cones with different

Re: [Emc-users] Cutting tool fingernail style need

2016-02-20 Thread Florian Rist
Hi Gene, I'm not sure if it's useful, but using this tool: https://www.hoffmann-group.com/US/en/hus/Mono-machining/Solid-carbide-milling-cutters/Solid-carbide-front-back-corner-rounding-cutter-TiAlN-0%2C2-mm-GARANT/p/208170 An doing two cuts you might be able to get what you want. Hoffman

Re: [Emc-users] Cheap Chinese Spindles?

2015-10-19 Thread Florian Rist
Hi, I replaced Persce spindel by a cheaper alternative as well. We are using various spindles (2 kW to 8 kW water cooled with ATC) vom HSD for several years now and so fare the work very well. One of these might be a suitable replacement: http://www.hsdusa.com/viewdoc.asp?co_id=390 If noise

[Emc-users] OT: How is the kinematic system called usually used by 5axis water jet cutters?

2015-09-05 Thread Florian Rist
Hi, this is off-toppic, but maybe you can help me out: How it the kinematic system called, that most, if not all, 5axis (some times called 3D) CNC water jet cutters use to adjust the jet angels? Here a some images showing the mechanics:

Re: [Emc-users] Serial FPGA buses/interconnections [Was: Sandy box]

2015-06-10 Thread Florian Rist
Hi Philipp, thanks for the summery. I'd be interested in hearing what solution you come up (if any) in the end. Maybe you could post this briefly once the project is finished. The problem seams to be common. there is no space left for one or two PHYs and the Ethernet jack(s). The jacks have

Re: [Emc-users] Serial FPGA buses/interconnections [Was: Sandy box]

2015-06-08 Thread Florian Rist
Hi, right now I don't have the time to follow the thread, and maybe it's been mentioned already, but you might want to look at Powerlink as well: http://en.wikipedia.org/wiki/Ethernet_Powerlink A few years back I looked for a real time Ethernet system and found Powerlink simpler than

Re: [Emc-users] PCB adapters for oscilloscope probes

2015-03-17 Thread Florian Rist
Hi Philipp Now the question: Does anyone here have an idea how or where to get some spares of those adapters? Do you have other probes available as well? It's much easier to find these adapters for 2.5 mm probes. http://www.digikey.com/product-detail/en/PK106-4/PK106-4-ND/3587113

Re: [Emc-users] PCB adapters for oscilloscope probes

2015-03-17 Thread Florian Rist
Hi Could you use SMA or microdot connectors instead (and not use an actual test probe?) This is most probably not an option, as Philipp has to minimise the influence of the probe on the signal. But the SMA connector might be a good idea, still. A SMB jack has a outer diameter of about 3.6

Re: [Emc-users] temperature reader

2014-11-22 Thread Florian Rist
Hi Aram Is there temperature sensor similar to http://www.extech.com/instruments/product.asp?catid=62prodid=653 but i want to instead USB connection it simply output 0-5 V DC 5 V DC ( or 10 V DC) equal 2200 C degree Some king laser none contact temperature reader Sure, just look for

Re: [Emc-users] 5i25 2x 7i76 to control two machines?

2014-08-24 Thread Florian Rist
Hi You can have two (or more) different CNC machines connected to different 7i67 pins (or other kinds of I/O), with different linuxcnc .ini files for each CNC machine. But you can still only run one at a time. Well, LinuxCNC can control a lot of axis, so multiple machine could be treated

Re: [Emc-users] OT: 5axis Workpiece Offset Compensation (in Sinumerik and LinuxCNC)?

2014-08-19 Thread Florian Rist
Hi Stuart, thanks for your comment. Do all your programming in reference to the XYZ0 you choose to make setup and multiple ops the easiest possible. Then use G54-G59 to set the zero coordinate offset from machine zero. This will work for 3, 4 and 5 axis programming. Hmm. Lets assume a

Re: [Emc-users] OT: 5axis Workpiece Offset Compensation (in Sinumerik and LinuxCNC)?

2014-08-19 Thread Florian Rist
Hi Andy and Stuart thanks for you messages. Now I mount the cube on the machine, after touching off it turns out that its 0.1 mm off in XYZ and turned and tilted by 0.1°. How to compensate this misalignment? My first guess would be to touch-off the B axis of your coordinate system to 0.1

[Emc-users] OT: 5axis Workpiece Offset Compensation (in Sinumerik and LinuxCNC)?

2014-08-18 Thread Florian Rist
Hi, sorry, this is somewhat off-topic, as it does not (only) concern LinuxCNC but Sinumerik controls, however I think you guys will know and I hope you don't mind me asking. I'm trying to figure out the proper way to handle workpiece offsets in 5axis machining, especially on Sinumerik 840D

Re: [Emc-users] Slip ring - experiences

2014-07-19 Thread Florian Rist
Hi Gene Power thru the rings seems easy enough to do, but shipping the encoder back thru adjacent slip rings would seem to be to subject to a huge amount of interference from the servo motors cummutation noises. One way to rid of this is to use optical transmission, so rings of acrylic

Re: [Emc-users] Slip ring - experiences

2014-07-19 Thread Florian Rist
Hi Tomaz Does anyone here have any experiences with slip ring components? Well, I don't have any personal experience, but I recently spent some time reading about the subject as I wanted to use slip-rings in a project (unfortunately it was canceled) to transmit 100 Mbit Ethernet and power).

Re: [Emc-users] 5i24?

2014-05-20 Thread Florian Rist
Hi, I was just about to suggest it might be caused by wrong labelling because I had a similar issue with a 5I23 connected to a 7I42TA. I don't remember exactly what the problem was, but output and GND pins were mixed up some how, or the output pin numbering - I don't remember. Maybe you can

Re: [Emc-users] 5i24?

2014-05-20 Thread Florian Rist
Hi Peter Pretty sure the 5I23 manual pinouts are correct (all even pins are grounded on all 50 pin I/O FPGA cards) It's quite likely that I made a mistakes or misread the manual, unfortunately I did not investigate this problem in depths, I changed something and it worked. The machine is

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-25 Thread Florian Rist
Hi, thanks for all your comments so fare. 0. move to home position (0°) 1. wait for low frequency trigger, a hardware or a software signal 2. within say 10° accelerate and synchronises to the 50Hz trigger so that the 10° position is reached 20ms after the last trigger and at a

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-25 Thread Florian Rist
Hi [Beaglebone black + BLDC contorller] Alternatively the Pico PWM brushless servo amp only needs a single channel of PWM: http://www.pico-systems.com/acservo.html A Gecodrive G320X [1] would be even easier to run from a Beaglebone as it does not require a PWM/Dir but a Step/Dir signal.

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-23 Thread Florian Rist
Hi Jon http://www.pico-systems.com/acservo.html Ah, I see that would make thinks much easier. You COULD, in theory, run it with just the Direction signal in synchronous antiphase mode, but this may cause the filter inductors (and maybe the motor, too) to run hot. Our servo amp was

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-23 Thread Florian Rist
Hi Jon Andy Pugh suggested you could run my PWM servo amps with just ONE wire/output pin. That is what I was referring to, and that two wires would be better. Ah, OK. Got it. Thank for the clarification. With sign/magnitude control, there is no output until the PWM signal has pulses on

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-23 Thread Florian Rist
Hi Andy Andy Pugh suggested you could run my PWM servo amps with just ONE wire/output pin What I was meaning was that it only needed one PWM channel, rather than the phase-locked 3-phase PWM that the 7i39 needs. I wasn't suggesting that it didn't also need direction, enable etc pins.

[Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-22 Thread Florian Rist
Hi, I'm facing a slightly unusual problem and before I head forward into the wrong direction I'd like to hear what you think about it: I have to pan a laser scanner (a single rotary axis), so I thought about using a BLDC (which I happen to have already), a MESA 7I39 BLDC controller and a

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-22 Thread Florian Rist
Hi Andy, thanks for you comments. Alternatively the Pico PWM brushless servo amp only needs a single channel of PWM: http://www.pico-systems.com/acservo.html Ah, I see that would make thinks much easier. And I'm not forced to use the Beaglbone I could was well you a micro/nanoATX board and a

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-22 Thread Florian Rist
Hi Dave I think this could be done as a geared solution, Of couse, I forgot to mention, there will be a reduction gear about 1:50 or 1:100, the motor is not very strong and the scanner ways about 5 kg and will be mounted eccentrically, so it will create quite some torque and inertial mass. if

Re: [Emc-users] Motion Synchronization to ext. trigger? (BeagleBone Back + Mesa 7I39, Machinekit?)

2014-04-22 Thread Florian Rist
Hi Andy Not directly. For multi-start threads you offset the starting position. So two G33.1 calls at the same position and with the same parameters or a Z offset of an integer  multiple of the pitch will cut the same thread. In a way the thread starts always at 0°. See you Flo

[Emc-users] How to rotate an axis constantly at a given speed?

2014-03-31 Thread Florian Rist
Hi, after I managed to set-up a forth angular axis I realised that I need to be able to command this axis to rotate at a given speed while other motion commands in x, y, z are executed. Is there a way to do this without changing the configuration and setting up as a spindle? Maybe I could modify

Re: [Emc-users] How to rotate an axis constantly at a given speed?

2014-03-31 Thread Florian Rist
Hi Dave What kind of motor? A small DC motor with encode, now connected to a 7i39 and controlled via a 5i23. Currently the drive is set-up as a angular axis A. See the Improvised DC Motor Control using Mesa 7i39? Thread. Greetings Flo

[Emc-users] Improvised DC Motor Controll using Mesa 7i39?

2014-03-30 Thread Florian Rist
Hi, after your help my torque problems improved. I think I have enough torque for now, but I'm facing another problem: I need to improvise rudimentary control of a small DC motor. What I want: Set speed and direction of the motor from G-Code. I don't need encoder feedback, it would be nice, but

Re: [Emc-users] Improvised DC Motor Controll using Mesa 7i39?

2014-03-30 Thread Florian Rist
Hi Andy, thank you so much for your help. Yes. Cool. :-) The 7i39 has Hal pins for each phase amplitude. Set A to 1 and B to -1 for one direction, and the other way for the other. Hmm, could you explain this a little? I guess I have to set-up a pwm generator and pins and signals and

Re: [Emc-users] Improvised DC Motor Controll using Mesa 7i39?

2014-03-30 Thread Florian Rist
Hi Andy You just need to drive the 3-phase PWM pins in the right way. Basically set up the DC motor exactly the same as the other motors, but don't use the bldc component. You need a scale component to create a negative copy of the PID output. Then drive two of the 7i39 phases with the

Re: [Emc-users] Improvised DC Motor Controll using Mesa 7i39?

2014-03-30 Thread Florian Rist
Hi Andy It's mainly just copy and paste of the configuration you have already written for the other motors. Just a bit _simpler_. Hmm, I didn't write the configuration for the other motors, I copy pasted it. I think from a plasma cutter example that you provided. Would leaving the encoder

Re: [Emc-users] Improvised DC Motor Controll using Mesa 7i39?

2014-03-30 Thread Florian Rist
...oh and I need to add the new PID to the servo threads: addf pid.3.do-pid-calcs servo-thread Right? cu Flo -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] Improvised DC Motor Controll using Mesa 7i39?

2014-03-30 Thread Florian Rist
Hi Andy Right? Aye, right. I'm working on it. Encoder input is already working. See you Flo PS: I'm working on the 2nd generation of this art installation: https://vimeo.com/72114655 (The head is unrolling thing blue sewing thread, the motions are generated only from feedback data gathered

Re: [Emc-users] Improvised DC Motor Controll using Mesa 7i39?

2014-03-30 Thread Florian Rist
Hi Andy and Peter, I did it. :-) It works. My configuration is still a total mess, but I'll clean up tomorrow. The strange thing is, that the tiny DC motor feels to have more torque than the much bigger BLDCs. I think there is still something wrong with my setup. The BLDCs are 75W, 0.28Nm at

Re: [Emc-users] BLDC Servo Torque Problem?

2014-03-29 Thread Florian Rist
Hi Peter, thanks for you reply. Its hard to tell with motor specifications, sometimes they are RMS and sometimes they are DC (for example lots of large BLDC motors are rated 320V which actually means they are 220V AC motors) I see. I'll stick with 24 V for now, the power supply is a 350 W

Re: [Emc-users] BLDC Servo Torque Problem?

2014-03-29 Thread Florian Rist
Hi Andy, I decided to put the system on my desk to investigate the case, this took a while. How are you commutating? The present configuration is 'qh'(use encoder input, use hall sensor input). I didn't override the default commutation setting, so I think its sinusoidal. Here are my config

Re: [Emc-users] BLDC Servo Torque Problem?

2014-03-29 Thread Florian Rist
Hi, an brief update, because my current measurement was wrong. I now used a normal ampere meter (Flue 87V) and measured a maximum current of 3.5 A. (I commanded the motor to a position where the phase I observed was at maximum current under low load and than increased the load until the motor

Re: [Emc-users] BLDC Servo Torque Problem?

2014-03-29 Thread Florian Rist
Hi Peter Where did you measure the current? I measured one phase. (you may indeed measure 600mA in the power leads with current limiting (7.5A) in the driver) The 600 mA was mistake, current reaches 3.5 A actually. If you see a red LED light on the 7I39, you have reached the current

Re: [Emc-users] BLDC Servo Torque Problem?

2014-03-29 Thread Florian Rist
Hi Andy It is probably worth checking that it works properly in plain h mode as a test that the hall pattern is correct. I'll try. What would be the best setting? The drivers have 3 hall sensors and a 4000 CPR encoder with index. But the 600mA at stall looks like the real issue. No, this

Re: [Emc-users] BLDC Servo Torque Problem?

2014-03-29 Thread Florian Rist
Hi Peter, I'll pull the current limit jumper and report back. Thanks. OK, now the jumper are moved from left to right and I reached 6 A max. on one phase. Better. Torque does not feel much stronger though. And the over current LED still light up. But now the current limit is protecting the

Re: [Emc-users] BLDC Servo Torque Problem?

2014-03-29 Thread Florian Rist
Hi Andy qh is almost certainly the best. You could try qhi if, and only if, you are sure of the index pulse orientation. I don't know the orientation aka offset, but I tried to measure it, by observing the index signal, the encoder counter and the hall sensors in hal scope. I think I got it

[Emc-users] BLDC Servo Torque Problem?

2014-03-27 Thread Florian Rist
Hi, I have some problems in setting up BLDC servos, I just don't manage to get enough torque. Here's the set-up: Intel D525MW Mesa 5i23 Mesa 7i39-LV Nanotec DB57L01 + 4000 CPR endoder The servos are rated 24V DC, 4.6A (peak 17A). My power supply is 24V DC SNT rated at 500W. I suppose I

Re: [Emc-users] Four cable CNC with LCNC. Someone finally did it.

2013-12-10 Thread Florian Rist
Hi Viesturs Paused at 0:57 and I see 7 ropes. Right, I didn't notice this. Maybe the plan was to have 8 but one of the drives died. :-) And at 3:17 I certainly do no understand, what kind of g-code is that, it seems to use G01 and G02, but the axis words seem strange. Indeed, looks

Re: [Emc-users] Four cable CNC with LCNC. Someone finally did it.

2013-12-09 Thread Florian Rist
Hi I think it's only a matter of zeroing.. In deed, getting the kinematics right is the tricky part. Here's short presentation of the three rope system that I and two colleges built recently - it's an art installation, a drawing machine. http://vimeo.com/72398393 See you Flo

Re: [Emc-users] Four cable CNC with LCNC. Someone finally did it.

2013-12-09 Thread Florian Rist
Hi What is that machine doing? It's laying out a thin thread spooled from a large 1 m spool sitting next to the white base. The motor to do so sits in the head, supported by the three ropes. This head also carries a Raspberry Pi board, a WLAN bridge, a servo driver and USB camera. The

Re: [Emc-users] Four cable CNC with LCNC. Someone finally did it.

2013-12-09 Thread Florian Rist
One more thing regarding ropes: This is the pro version (6 ropes): http://www.youtube.com/watch?v=RCa8uDFzbsw Developed at the Fraunhofer Institute in Stuttgart: http://www.ipa.fraunhofer.de/Parallele_Seilroboter.597.0.html See you Flo

Re: [Emc-users] Laser engravng

2013-12-06 Thread Florian Rist
Hi Gene So my question is, to someone who may have tried/done this, is can a 1 ounce layer of copper be burned away rapidly enough so as not to leave a burned, conductive path where the copper was? I tried this with two different Lasers sources: 120 W CW CO2 Laser at 10600 µm wavelength:

Re: [Emc-users] Laser engravng

2013-12-06 Thread Florian Rist
PS: There was a ns pulsed UV Laser (quadrupled YAG) on ebay recently, this would be the right one for the job. I was close to buying it was quite cheap. -- Sponsored by Intel(R) XDK Develop, test and display web and

Re: [Emc-users] Laser engravng

2013-12-06 Thread Florian Rist
Hi David iv'e try'd copper and even with 600w + it's difficult to even mark it Yes, 600W is not enough. That's why a q-switched laser with short pulses is needed. Pulse peek energy on my laser is 25 kW, that's still not enough, the one on the mentioned laser was about 1 MW. This instantly turns

Re: [Emc-users] Laser engravng

2013-12-06 Thread Florian Rist
Hi Gen Humm, thats beginning to sound like non-exportable munitions. Not to mention eyeball wreckers just from the reflections off the surrounding walls. :( Bad idea for someone not well versed in the tech. Yes proper eye protection is important, but also at just 2 W and a diode from a DVD

Re: [Emc-users] More flexible handling for coordinate systems?

2013-11-17 Thread Florian Rist
Hi Philipp, I'm not sure if it's a good idea, but I think you could do it by modifying the kinematic module. I once added a non-linear compensation to the trivkins kinematics to compensate for a deformed machine frame. It worked quit well and was easy to do, but unlike yours my compensation

Re: [Emc-users] Rotary stage

2013-11-04 Thread Florian Rist
Hi Stuart http://en.wikipedia.org/wiki/Cycloidal_drive Thanks for the link. I searched for 'orbital drive' but only found 1964 (or so) patent with a few drawings that didn't help to much. I knew this kind of drive, but could not see it in the iges sketch file, as I didn't see any of the inner

Re: [Emc-users] Rotary stage

2013-11-03 Thread Florian Rist
Hi Stuart Not harmonic Same concept of two gears - one with one less tooth than the other. All parts are solid - no flexing. Hmm, so I don't get it. The ratio is almost one so, right? Flo -- Android is increasing in

Re: [Emc-users] Mainboard suggestions for a 5axis stepper machine

2013-10-25 Thread Florian Rist
Hi, thanks for all your comments. I ordered a set of these recently for a very price sensitive project: http://www.hotmcu.com/tb6600-1-axis-stepper-motor-2phase-driver-board-for-cnc-router-p-56.html?cPath=7_30zenid=pjqheuerppbjhploln9qfibto7 I ordered some and I'll give them a try. They are

Re: [Emc-users] Mainboard suggestions for a 5axis stepper machine

2013-10-25 Thread Florian Rist
Hi Gene And I have grown confident of the Chinese 2M542, 50 volt 4.2 amps. Ah, interesting alternative, thanks. By now I would have destroyed at least 2 or 3 more of the A3977 based cards, something I got tired of after the third one. I used this chip on a set of boards that I designed

[Emc-users] Mainboard suggestions for a 5axis stepper machine

2013-10-24 Thread Florian Rist
Hi, being a bit confused by partly following the D525MW discussions, I'd like to ask for recommendations for the conversion of a 5axis hot wire cutter. Which mainboard would you use? My plan is to use one of the Mesa PCI I/O cards. And while we're at it: Any suggestions for small stepper drivers

Re: [Emc-users] 3D Models from photos

2013-09-12 Thread Florian Rist
Hi Andy http://youtu.be/sGNesS8vo4M I am pretty impressed But you habe to hand your data over to Autodesk. I use Agisoft PhotoScan: http://www.agisoft.ru/ Super cheap and powerful everything stays local. See you Flo

Re: [Emc-users] BBB Laptop Screens?

2013-09-07 Thread Florian Rist
Hi Kirk Does anyone have thoughts on using an LCD screen from a laptop with a BBB? http://g3nius.org/lcd-controller/ AFAIK the Raspberry Pi features a LCD connector, so I should be possible to directly connect the panel to the PI. Not you cold remote control the BBB. Though this is a bit

Re: [Emc-users] BBB Laptop Screens?

2013-09-07 Thread Florian Rist
... forgot the easiest solution: There is a HDMI/LCD cape for the BBB: http://www.embest-tech.com/shop/product/beaglebone-hdmi-cape.html The panel directly connects to the cape - a adapter to change the pin-out might be necessary, though. Flo

Re: [Emc-users] Will any ol' RS485 adapter be good enough?

2013-08-24 Thread Florian Rist
Hi http://www.ftdichip.com/Products/Cables/USBRS485.htm I have the USB-RS485-PCB. It's only half-duplex. The USB to serial converter might be capable of full duplex RS485 out of the box, but the driver on this module is not. Flo

Re: [Emc-users] Help IDing this chip (off topic)

2013-08-14 Thread Florian Rist
Hi I guess it makes sense to go for the biggest? http://www.digikey.com/product-detail/en/Q4040K7TP/Q4040K7TP-ND/216027 Not necessarily. TRIACs require a minimum latching current to flow through it, otherwise they will switch off to early after triggering. For the types in question this

Re: [Emc-users] USB Pendant (again)

2013-08-12 Thread Florian Rist
Hi Sven I've now got info from the retailer that the producer actually - right now - is working on a LinuxCNC setup. :) Cool. Keep us posted in case you get any news. See you Flo -- Get 100% visibility into Java/.NET

Re: [Emc-users] NSK vt150RAS1

2013-07-29 Thread Florian Rist
Hi Curti It seems to be a 3 phase motor with A+, A-, B+, B-, C+, C connections. Hmm, in there current data sheets they call the encoder signals lines A+, B+, C+ and the motor windings U, V, W. Flo -- Get your SQL

Re: [Emc-users] USB Pendant (again)

2013-07-18 Thread Florian Rist
Hi Pete Ooh thats pretty, how much are they According to On 19.07.2013 00:16, Pete Matos wrote: the website, linked by the OP, 99 USD and do we have software for LinuxCNC to work with them? Most probably not. But it most probably acts as a HID and emulates a keyboard and so all it would take

Re: [Emc-users] USB Pendant (again)

2013-07-18 Thread Florian Rist
Hi Pete ReasonableHMM But not certain. These pndants need a Mach3 plug-in, so it could be any kind of protocol and some of them feature a small display. Dose the wireless on, discussed recently, need a plug-in for Mach3, too? today's my birthday.H.. Congratulations. :-) See

Re: [Emc-users] Need MESA 5i25 + 7i77 in EU quickly

2013-07-16 Thread Florian Rist
Hi Does somebody have spare kit in EU? Need it in Lithuania. I recently ordered a 5i25 from Martin Duží: www.duzi.cz/shop_cnc/ I got it within three days including standard shipping, so it must have been sent off right after ordering. See you Florian

Re: [Emc-users] 5axis Simulation?

2013-07-07 Thread Florian Rist
Hi Dave modify vismach in linuxcnc to show stock and allow cutting (graphic subtraction) Thanks for pointing me to vismach. I'll try to get is to run later this evening. See you Flo -- This SF.net email is sponsored

Re: [Emc-users] 5axis Simulation?

2013-07-07 Thread Florian Rist
Hi John The two starting places I'm aware of, in case you end up writing your own, are OpenSCAM (currently 3D only, but the author seems to think 5D, and lathes are possible) ... Oh, interesting project, seams to be quite complex and offer a lot of features. I'll take a look at the code and

[Emc-users] 5axis Simulation?

2013-07-06 Thread Florian Rist
Hi, I'm looking for a simulation software that allows to simulate 5axis material removal, that is at best open source and hast be not expensive. If this does not exist I'm thinking about writing one. The geometry part of it is not so much of a problem (as long as it does not have to be efficient)

Re: [Emc-users] Brain-Dead LinuxCNC G-Code Interface?

2013-06-24 Thread Florian Rist
Hi Yes, the best option if someone _really_ wanted to do this seems to be running the rsh interface and just sending gcodes one at a time as MDI commands. Well, I did something like that using rsh recently, but there is a big problem with it: As far as I can see a continuous motion (G64) is

Re: [Emc-users] Set Axis Jog Mode to Teleop Mode (world mode)

2013-06-20 Thread Florian Rist
Hi Viesturs Did you already try to jog the machine or are you afraid to try in fear of breaking something? Jogging works in axis mode, machine runs a program, but jogging in world mode would be convenient during setup. I _think_ that it depends, whether there is KINEMATICS_BOTH or

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