2013/8/19 Gene Heskett <[email protected]> > On Monday 19 August 2013 16:57:28 Viesturs Lācis did opine: > > > The thing is that it updates the video very slowly, it takes several > > seconds to update the camera image and that is not so good news. > > Any ideas, what can I do to improve this? Or is it how it usually work > > also for other users? > > This is an IP/ethernet camera or USB? Mine is usb, plugged into the other > front port on an atom D525MW board. The wired mouse is on the other port. > > If an IP camera, using ethernet, it needs more power than an ethernet port > can supply, so I'm ambiguously confused as to what you meant by plugging it > into your router. > > > Half a second might be nice. Any chance that the pc is too slow? > > Cheese runs this camera in very close to real time when set to show a > 640x480 image. So if thats an atom board, you should be getting similar > results, around 15 fps.
It is USB camera. PC is some unknown mainboard with AMD Athlon XP 2200+ cpu, single core,1,8 gHz, 512 MB RAM. And it takes up to a 15-20 seconds to update camera image. > My secondary, not yet addressed problem is in deriving a rock solid mount > for this nominally 30mm diameter camera, and one that also represents some > heat sinking, in operation it warms up about 25F. Any slippage or wibbles > in the mount and the offsets are all toast. And I'd like to see the > crosshairs timed from the camera output as opposed to the arbitrary 640x480 > centered locations as that is potentially a source of heat related error as > the pcb holding that teeny sensor moves as the pcb grows in the heat. But > we're likely stuck with that and will have to depend on the rigidity of the > mounts we cobble up. > > My current fixture keeps the camera pretty steady, when machine moves around, but it is not very hard to move it by hand - that plastic case is not meant for tightening screws too hard. I think that there is pretty nice way to calibrate the camera - take some piece of material and drill a small hole in it. Then to check for camera alignment, put that drill in spindle, put that piece of material on table, jog the machine so that the drill is in the hole and now move the camera to that hole and check for the DRO values - do they match the previous offsets or no (or those in tool table, if you have the "camera tool" like I do); if there is a difference, update your offsets and that is it. I edited that togle-caa.ui glade panel file a little: 1) I removed those 2 sliders as they were not connected in HAL file to anything 2) I added few buttons to align part with JohnT's subroutine calls from vcp. It looks like this: http://picpaste.com/camera-AVAONUNY.png There are 2 questions: 1) how exactly do I get DRO values also in this camera tab? there is an image in wiki page and one sentence that mentions this, but I was not able to find detailed explanation; 2) I almost broke my router due those damn modes!!! Executing mdi command by pressing a vcp button leaves LinuxCNC in joint mode. switch to MDI tab, back to Manual and it is world mode again. I was checking those alignement subroutines, pressed "start alignment" and started jogging to the other point to finish alignment. Guess, what happens, when jogging gantry machine in joint mode?!? I was few meters from the screen, so I could not tell from the dro, if there were axis letters or joint numbers. This issue has been mentioned previously here on mailing list, so I decided to register a bug report. I found this page: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Trackers There are links to bug tracker on sourceforge. And I was not able to find, how to add new bug report. Clicking the link in the sentence "To submit a bug report, click [here]<https://sourceforge.net/tracker/?func=add&group_id=6744&atid=106744> ." brought me to list of existing bug reports. I logged in my sourceforge account, reopened the same link and still no chance to add bug report. -- Viesturs ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
