Re: [Emc-users] BBB Laptop Screens?
On 9/8/2013 12:53 AM, Kirk Wallace wrote: On 09/07/2013 01:46 PM, Florian Rist wrote: ... 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 I am also searching for a HMI solution for beagle bone running LinuxCNC . My idea is to use an inexpensive android tablet with a X11 server app that can provide a display a touch screen. I thin that this solution is affordable and much more colplete than a LCD interface with a keyboard and mouse and more space saving . For a small milling CNC I think that is better . The issue is that the tablets use only wifi connection Paul -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Machine coordinates offset madness!!
2013/9/8 Bob Weiss bweiss0...@gmail.com I am trying to get my printer setup with the correct home coordinates and have it read 0 for x,y z and everytime I start lcnc it shows z having -235.211 something and I have NO IDEA where its getting this from? Is this the same linear delta machine you were asking about earlier? In that case I think it is expected - the tool platform is lower than the joints by the strut length (vertical projection of strut length, to be precise). So, if joints are at 0, then the TCP (tool controlled point) will be somewhere in Z0. Just to check for that - what if you try to set joint home positions to something like 100 or 200 instead of 0 (in INI file with HOME = and HOME_OFFSET = variables, change both so that joint does not move from home switch position to final home position). For more details see here: http://www.linuxcnc.org/docs/devel/html/config/ini_config.html#_axis_lt_num_gt_section_a_id_sub_axis_section_a I guess that you might need to adjust joint max limits as well. -- Viesturs -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BBB Laptop Screens?
2013/9/8 Paul Lacatus p...@paul-lacatus.ro The issue is that the tablets use only wifi connection Many tablets can use usb Ethernet adapters (like this http://www.ebay.com/itm/400375887593) Andrew -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BeagleBone Image Available
On Sat, Sep 7, 2013 at 10:58 AM, Kirk Wallace kwall...@wallacecompany.comwrote: Excellent! I figured it was missing libs or something like that. Mark ... snip libgl1-mesa-swx11 looks like it is the software version of OpenGL rendering and removes the hardware version, libgl1-mesa-glx. http://packages.debian.org/sid/libgl1-mesa-swx11 It may be that libgl1-mesa-glx is not compatible with a VCN link, or that VNC needs to be configured for my particular setup. I'm not sure how to approach the problem yet, or if it resides with the host or remote. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ It could also be the X server didn't recognize the hardware libs, or were possibly a version mismatch, or the wormhole was pointing in the wrong direction, or the fabric of the universe was beginning to tear... ;-) How did you make the connection between the two? ssh -X hostname? Mark -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BeagleBone Image Available
On Sun, Sep 8, 2013 at 10:28 AM, Kirk Wallace kwall...@wallacecompany.comwrote: It could also be the X server didn't recognize the hardware libs, or were possibly a version mismatch, or the wormhole was pointing in the wrong direction, or the fabric of the universe was beginning to tear... ;-) How did you make the connection between the two? ssh -X hostname? Mark I installed tightvncserver on the LinuxCNC PC or BBB and invoked vncserver (per http://wiki.linuxcnc.org/cgi-bin/wiki.pl?BeagleboneDevsetup under Running headless X via VNC). Then used Remote Desktop Viewer on the remote PC to connect to ip-address-of-bb:5901. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ Huh. Must be something in tightvncserver that didn't recognize, or didn't play well with the hardware drivers then. Maybe an .ini setting in tightvncserver? Mark -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Making a BBB interface cape - was BeagleBone Image Available
Greetings -Original Message- From: Charles Steinkuehler [mailto:char...@steinkuehler.net] There are far too many pin naming schemes for the BeagleBone, including two new ones used by the LinuxCNC Beaglebone code. Short answer: Read the code (sorry!) Medium answer: The PRU code uses an integer value that equals the kernel GPIO number plus 32 (so that zero means don't twiddle *ANY* pins!). The values are also extended, and what would be the non-existing GPIO bank 4 means Use the PRU direct I/O pins. The hal_bb_gpio pin numbers is: 1xx = P8 2xx = P9 xx = connector pin number Long Answer: I really need to make a blog page about pin numbering. There's some data in Brandon Heller's post about home/limit switches: http://bb-lcnc.blogspot.com/2013/07/adding-homelimit-switches.html http://bb-lcnc.blogspot.com/2013/07/adding-homelimit-switches.html I'll try to get something posted tonight... -- Charles Steinkuehler Thank you for this information. After some code reading the .dts file for the BeBoPr-bridge got me to the existing pinouts for stepping. For new inputs, I need to work through Brandon's stuff on my system. The para: We'll use X-Max, the limit switch closest to the PWM outputs at the edge of the BeBoPr. According to the BeBoPr manual, the BeagleBone black manual (BBB_SRM.pdf pg 80), and tracing the board traces, the X-max input switch is pin 32 on connector 8 and gpio0.11. has me puzzled. I cannot find the BeBoPr manual anywhere on CircuitCo and have not got one (or a Bridge) to trace tracks :-( The .dts file suggests Brandon's numbers are non-Bridge and X-max will be P8-9 (gpio2.5) Finally a detailed question: I notice on the 'scope that the DIR lines have random looking waveforms (around 500 Hz - but different patterns on each axis) after a keyboard jog has stopped. An axis DIR goes quiet (at LO) after a G-code move of the axis. Is this behaviour intentional? If not might it hide a bug on Setup/Hold times of the DIR line - I ask as in another life I have been bitten by the small, but very nasty to find, loss of position errors that invalid timing can produce on some stepper drivers? Best wishes John Prentice -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Making a BBB interface cape - was BeagleBone Image Available
On 9/8/2013 3:42 PM, John Prentice (FS) wrote: For new inputs, I need to work through Brandon's stuff on my system. The para: We'll use X-Max, the limit switch closest to the PWM outputs at the edge of the BeBoPr. According to the BeBoPr manual, the BeagleBone black manual (BBB_SRM.pdf pg 80), and tracing the board traces, the X-max input switch is pin 32 on connector 8 and gpio0.11. has me puzzled. I cannot find the BeBoPr manual anywhere on CircuitCo and have not got one (or a Bridge) to trace tracks :-( The .dts file suggests Brandon's numbers are non-Bridge and X-max will be P8-9 (gpio2.5) There is a manual...I'll send it off-list. There is also a pinout chart (which is IMHO even more helpful) as part of the Bridge board github project: https://github.com/modmaker/BeBoPr-Bridge/blob/master/BBB-P8-P9-signals.pdf ...also, check out the wiki pages on the BeBoPr github project, there's a lot of good info there too: https://github.com/modmaker/BeBoPr/wiki/BeBoPr-Bridge Finally a detailed question: I notice on the 'scope that the DIR lines have random looking waveforms (around 500 Hz - but different patterns on each axis) after a keyboard jog has stopped. An axis DIR goes quiet (at LO) after a G-code move of the axis. Is this behaviour intentional? If not might it hide a bug on Setup/Hold times of the DIR line - I ask as in another life I have been bitten by the small, but very nasty to find, loss of position errors that invalid timing can produce on some stepper drivers? It's not a bug, it's caused by the fact that the PRU is an actual independent timebase and not an exact integer fraction of the servo thread (as happens with software step-gen). What you're seeing is the position 'hunt' around the desired set point as the servo thread attempts to zero out the error but the real-world effects like IRQ latency, jitter, and the fact that LinuxCNC is calculating new servo commands based on the theoretical ideal that it sampled the position instantly and without jitter at the start of the servo period, and takes exactly zero time to calculate the new commanded stepper velocity. All the applicable setup and hold times are still being honored, the commanded step rate is just oscillating between very small values on either side of zero. The 500 Hz rate comes from the servo thread, which is running at 1 mS (the sign tends to invert each pass through the servo thread). Feel free to write some squelch code to get rid of this if you want, but it's not really any different than the minor hunting that goes on with real servo motors and encoders when at rest, so I haven't worried about it. -- Charles Steinkuehler char...@steinkuehler.net signature.asc Description: OpenPGP digital signature -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] BeagleBone Image Available
On Sun, 08 Sep 2013 07:28:24 -0700, you wrote: I installed tightvncserver on the LinuxCNC PC or BBB and invoked vncserver (per Mmmhh - my experiences with tightvnc have not been good, I'd try a different vnc program. Steve Blackmore -- -- Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
