I have just finished building a 1000 x 1000mm WorkBee, all screw, which has been an absolute pleasure to build. The machine I think is working perfectly, as everything that I have produced so far has worked very well. However, using Universal G-Code Sender Platform V2 into CNC XPro V3, GRBL1.1f I am getting spurious stoppages in a cut that occur randomly and result in the UGCS hanging. Or, maybe it is the UGCS hanging that is causing the WorkBee to stop. Either which way it is proving to be really frustrating and I would appreciate any advice you guys might have on the matter. I cant afford to have to reload a twenty minute cut 5 or 6 times, it is unreasonable. Regards, Ross.
Have you eliminated the possibility of EMI? Is your router grounded? Frame? Proper shielding, etc? I had problems with my MiniMill stopping for "no reason" and the problem went away after grounding my router and frame.
Hi Scotty, I know I have a good ground on the spindle but I have not run separate grounds to the chassis yet. Something for the morning. I did put some 100nF caps across the home limit switches at the XPro but no noticeable change. When it’s working it’s fantastic but this is starting to get me down. Ross
For the whole story on wiring limit switches, Wiring Limit Switches · gnea/grbl Wiki · GitHub The caps will work if you have low levels of EMI, for more than that you will need 'more'. This post has some good info on grounding https://openbuilds.com/threads/c-beam-machine-xlarge.7394/page-14#post-63668
I had something similar when using a vac to clear dust before i grounded the frame. If the vac touched the frame, within a few seconds the code would crash out. Since grounding the chassis all is well. Just a thought...
I have added grounds to everything and have metered from the cutter in the spindle to all points around my WorkBee. I have zero ohms resistance across any path through electrical earth so, fingers crossed and time to load up another piece of hardwood and see what happens. I will let you know
BTW, it is worth noting for anyone suffering with similar problems that any grounding links will probably not work terribly well unless you break through the anodised surface of the rails. The anodised surface provides an excellent resistance..
Patience Chillimonster, having a chaotic weekend so probably won’t be able to test until next week but promise to let you know.
Sounds like my experience with xpro and ugs. I scrapped it all and went with keling drivers and linuxcnc. This setup works great for me.
Well, the upshot of a lot of grounding wires and metering out is a big fat zero, in terms of resistance but as far as running a programme goes I cant even v-carve 4 40mm letters in Acrylic without it stopping at least 2-3 times. Work is now starting to pile up and I am at a complete loss as to what to do next. Surely the supplied kit cant be that unreliable?
disable homing and limits. then noise on those lines will be ignored. if running from a laptop try running it without external power. you will have to be careful to turn off all the power saving stuff that will shut it down when on battery power. 'presentation mode' should do it. laptop power supplies are very noisy! try a different USB cable. a good one with ferrite filters on the ends for preference. short is also good. an example pic
Well, thanks for all your advice gentlemen but having gone back to Ryan at Ooznest he suggested that it might be a fault with Universal G code sender Platform and Windows 10. I have downloaded grbl-panel on his advices and since run my teak test piece without a single hiccup. Fingers crossed the final hurdle might just have been crossed and I can now start beginning to learn this fascinating subject from scratch. Thanks again, Ross
Glad to hear you got it sorted! And on a bright note, you also won't have to worry about grounding issues down the road...
