{"action":"created","issue":{"url":"https://api.github.com/repos/grbl/grbl/issues/863","labels_url":"https://api.github.com/repos/grbl/grbl/issues/863/labels{/name}","comments_url":"https://api.github.com/repos/grbl/grbl/issues/863/comments","events_url":"https://api.github.com/repos/grbl/grbl/issues/863/events","html_url":"https://github.com/grbl/grbl/issues/863","id":119921064,"number":863,"title":"COREXY X Problem","user":{"login":"tiago1080550","id":7406266,"avatar_url":"https://avatars.githubusercontent.com/u/7406266?v=3","gravatar_id":"","url":"https://api.github.com/users/tiago1080550","html_url":"https://github.com/tiago1080550","followers_url":"https://api.github.com/users/tiago1080550/followers","following_url":"https://api.github.com/users/tiago1080550/following{/other_user}","gists_url":"https://api.github.com/users/tiago1080550/gists{/gist_id}","starred_url":"https://api.github.com/users/tiago1080550/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tiago1080550/subscriptions","organizations_url":"https://api.github.com/users/tiago1080550/orgs","repos_url":"https://api.github.com/users/tiago1080550/repos","events_url":"https://api.github.com/users/tiago1080550/events{/privacy}","received_events_url":"https://api.github.com/users/tiago1080550/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2015-12-02T11:19:10Z","updated_at":"2015-12-02T15:34:45Z","closed_at":null,"body":"Greetings,\r\n\r\nI'm having an interesting problem with the movement along the X axis in a COREXY structure (no z-axis).\r\nThe homing instruction executes correctly, but on the wrong direction, so i invert it by using $23=3 (the two limit switches are placed in the down left corner).\r\nIf after to the homing, I send an movement instruction for only the Y axis (G90G1Y20F500), it's executed without a problem. The error occurs when the same instruction is sent for the X axis, this time the axis does not stop and goes until it slams against the structure and i reset the arduino.\r\nThis happens even on a fresh install of GRBL 0.9j, and the interesting thing is I stopped this project for a month and everything was working fine and never had this problem. Am I missing something?\r\n\r\nThanks in advance\r\n\r\nEdit: Some aditional information, this only happens if i invert the homing on the X AXIS"},"comment":{"url":"https://api.github.com/repos/grbl/grbl/issues/comments/161335575","html_url":"https://github.com/grbl/grbl/issues/863#issuecomment-161335575","issue_url":"https://api.github.com/repos/grbl/grbl/issues/863","id":161335575,"user":{"login":"chamnit","id":948029,"avatar_url":"https://avatars.githubusercontent.com/u/948029?v=3","gravatar_id":"","url":"https://api.github.com/users/chamnit","html_url":"https://github.com/chamnit","followers_url":"https://api.github.com/users/chamnit/followers","following_url":"https://api.github.com/users/chamnit/following{/other_user}","gists_url":"https://api.github.com/users/chamnit/gists{/gist_id}","starred_url":"https://api.github.com/users/chamnit/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/chamnit/subscriptions","organizations_url":"https://api.github.com/users/chamnit/orgs","repos_url":"https://api.github.com/users/chamnit/repos","events_url":"https://api.github.com/users/chamnit/events{/privacy}","received_events_url":"https://api.github.com/users/chamnit/received_events","type":"User","site_admin":false},"created_at":"2015-12-02T15:34:45Z","updated_at":"2015-12-02T15:34:45Z","body":"@tiago1080550 : In that case, you can enable limit switch state reporting by setting $10=255. This will enable all real-time reports including limit state. Connect to Grbl via a terminal and send '?' character to directly view the reports. Check if your switches are being read by Grbl correctly. 0=not triggered. 1=triggered."}}