{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4920","repository_url":"https://api.github.com/repos/MarlinFirmware/Marlin","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4920/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4920/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4920/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/4920","id":180047402,"number":4920,"title":"Motors flickering","user":{"login":"i23d","id":22459569,"avatar_url":"https://avatars.githubusercontent.com/u/22459569?v=3","gravatar_id":"","url":"https://api.github.com/users/i23d","html_url":"https://github.com/i23d","followers_url":"https://api.github.com/users/i23d/followers","following_url":"https://api.github.com/users/i23d/following{/other_user}","gists_url":"https://api.github.com/users/i23d/gists{/gist_id}","starred_url":"https://api.github.com/users/i23d/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/i23d/subscriptions","organizations_url":"https://api.github.com/users/i23d/orgs","repos_url":"https://api.github.com/users/i23d/repos","events_url":"https://api.github.com/users/i23d/events{/privacy}","received_events_url":"https://api.github.com/users/i23d/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2016-09-29T13:21:17Z","updated_at":"2016-10-02T10:59:03Z","closed_at":null,"body":"Hi there. I am new at Github so I apologize in advance if i make few mistakes in the approach to the problem, to obvious questions or grammer mistakes. \r\n\r\nMe and my friends build a custom 3D printer / CNC. \r\n\r\nThe only unresolved problem that we have and it is unabeling us to print is the flickering of the motors on y and x axes. \r\nAfter we home it (on Printrun didn't tried other programs) after few seconds you can hear and see that the motors on y and x axes are flickering a bit (not sure for the right verb?). You can see that the motor on y axes is flickering harder. The interesting part is that on the y axis we have dual motors and usually only one is flickering. The motor on the x axes always starts to flicker few seconds after the motor on y. \r\nWe checked the wiring, and we tried to release the belt from the motors so we think it is not mechanical or electrical but firmware. \r\n\r\nTo help explain the problem and give you more clues I uploaded a video on youtube. \r\n[https://www.youtube.com/watch?v=3B07D6gLGdQ](https://www.youtube.com/watch?v=3B07D6gLGdQ )\r\nThe flickering starts at 1.11 After homing on Printrun I have not touched anything. \r\n\r\nHope someone has good ideas about this and how to find the problem. \r\nThank you in advance. "},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/250965626","html_url":"https://github.com/MarlinFirmware/Marlin/issues/4920#issuecomment-250965626","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4920","id":250965626,"user":{"login":"thinkyhead","id":698003,"avatar_url":"https://avatars.githubusercontent.com/u/698003?v=3","gravatar_id":"","url":"https://api.github.com/users/thinkyhead","html_url":"https://github.com/thinkyhead","followers_url":"https://api.github.com/users/thinkyhead/followers","following_url":"https://api.github.com/users/thinkyhead/following{/other_user}","gists_url":"https://api.github.com/users/thinkyhead/gists{/gist_id}","starred_url":"https://api.github.com/users/thinkyhead/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/thinkyhead/subscriptions","organizations_url":"https://api.github.com/users/thinkyhead/orgs","repos_url":"https://api.github.com/users/thinkyhead/repos","events_url":"https://api.github.com/users/thinkyhead/events{/privacy}","received_events_url":"https://api.github.com/users/thinkyhead/received_events","type":"User","site_admin":false},"created_at":"2016-10-02T10:59:03Z","updated_at":"2016-10-02T10:59:03Z","body":"Stepper drivers will fail at something pretty low, like 190°C so they should be heat-sinked, or the board itself may have a layer for heat-sinking.\r\n\r\nThe wiring for stepper motors usually has the center wire pair swapped. So, if the two center wires were yellow-green at the driver end, it will be green-yellow at the motor end. I'm not sure how that applies to motors with 6 poles."}}
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