Discuss Machine Mechanics Here
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A couple of weeks ago, my Asteroid starting having some response issues and the computer would become un-responsive. It was intermittent at first, but then it would have issues after every run and I would have to restart the computer by using the power button because normal shutdown would not respond. I finally reinstalled linux and linuxcnc because of the computer behavior and I would see linux doing a hard drive scan/repair on many startups. No help, but I do now have the latest linuxcnc options etc. The amazing thing is what I have found to be the culprit. After hours of frustration I noticed that when the router (Dewalt) was running, I could not access any files or folders. As soon as I turned the router off, the files were accessible. I used a different power cord (I am not using the driver relay), no help. I removed the router from the mount and the problem went away. I held the router against the frame while it was running and the problem was back. I have checked for power isolation on the router. Neither lead indicates continuity to the router body or grounds. I wrapped the body with electrical tape and reinstalled the router and the problem was back. I inadvertently stumbled on a fact that baffles me. The router was running on a speed setting of 4 and if I move the speed to 3 or 5 the problem vanishes. I made many runs today on a speed setting of 5 and everything ran normally. I cannot even imagine why the speed would be a factor or why the computer cannot access files simply because the router is running. I checked the router body (metal on Dewalt) to ground and I do read about 1.9 vac. Its possible there is an insulation breakdown internally I guess. I may have to buy another router to see if that will eliminate the issue. Just thought I would pass on this information in case anyone else runs into this problem or maybe someone has had the problem and has a solution other than purchasing a new router. In any case it may save someone many hours of frustration!!!
Sounds like you found an EM interference frequency (#4 on your router) that confuses the PC. Any chance you have a WiFi or Bluetooth dongle plugged into the PC , or even wireless mouse or keyboard? I know my old microwave will generate WiFi interference in my house when it runs. I've never had my CNC do what you describe though. No wireless devices on mine though.
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