{"action":"created","issue":{"url":"https://api.github.com/repos/grbl/grbl/issues/589","labels_url":"https://api.github.com/repos/grbl/grbl/issues/589/labels{/name}","comments_url":"https://api.github.com/repos/grbl/grbl/issues/589/comments","events_url":"https://api.github.com/repos/grbl/grbl/issues/589/events","html_url":"https://github.com/grbl/grbl/issues/589","id":57280928,"number":589,"title":"Disable stepper drivers? (like RepRap M18 \"Motors off\" effect)","user":{"login":"natevw","id":265902,"avatar_url":"https://avatars.githubusercontent.com/u/265902?v=3","gravatar_id":"","url":"https://api.github.com/users/natevw","html_url":"https://github.com/natevw","followers_url":"https://api.github.com/users/natevw/followers","following_url":"https://api.github.com/users/natevw/following{/other_user}","gists_url":"https://api.github.com/users/natevw/gists{/gist_id}","starred_url":"https://api.github.com/users/natevw/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/natevw/subscriptions","organizations_url":"https://api.github.com/users/natevw/orgs","repos_url":"https://api.github.com/users/natevw/repos","events_url":"https://api.github.com/users/natevw/events{/privacy}","received_events_url":"https://api.github.com/users/natevw/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-02-11T06:24:31Z","updated_at":"2015-02-11T16:41:03Z","closed_at":"2015-02-11T14:29:13Z","body":"I have a CNC 3040T (\"Chinese CNC\" with JP-382A stepper controller and JP-1482 spindle board, should be same controller as perhaps more common 3020T-DJ would have if Googling). This is a parallel port controller intended to be used with Mach3.\r\n\r\nNow, IIRC when I used Mach3, it would allow the stepper motors to run free when idle, without any pin settings. With Grbl, the steppers are always \"taut\" so it is difficult to adjust them with the handwheels when that is necessary [e.g. to back away from a limit switch].\r\n\r\nIs there a way to have Grbl do the same thing? I don't know that there is any pinout dedicated for enabling the steppers, it seemed somehow Mach3 was able to do it with only the DIR/STEP pins of each axis configured."},"comment":{"url":"https://api.github.com/repos/grbl/grbl/issues/comments/73914432","html_url":"https://github.com/grbl/grbl/issues/589#issuecomment-73914432","issue_url":"https://api.github.com/repos/grbl/grbl/issues/589","id":73914432,"user":{"login":"natevw","id":265902,"avatar_url":"https://avatars.githubusercontent.com/u/265902?v=3","gravatar_id":"","url":"https://api.github.com/users/natevw","html_url":"https://github.com/natevw","followers_url":"https://api.github.com/users/natevw/followers","following_url":"https://api.github.com/users/natevw/following{/other_user}","gists_url":"https://api.github.com/users/natevw/gists{/gist_id}","starred_url":"https://api.github.com/users/natevw/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/natevw/subscriptions","organizations_url":"https://api.github.com/users/natevw/orgs","repos_url":"https://api.github.com/users/natevw/repos","events_url":"https://api.github.com/users/natevw/events{/privacy}","received_events_url":"https://api.github.com/users/natevw/received_events","type":"User","site_admin":false},"created_at":"2015-02-11T16:41:03Z","updated_at":"2015-02-11T16:41:03Z","body":"I have these settings:\r\n\r\n```\r\n$0=10 (step pulse, usec)\r\n$1=25 (step idle delay, msec)\r\n$2=0 (step port invert mask:00000000)\r\n$3=1 (dir port invert mask:00000001)\r\n$4=0 (step enable invert, bool)\r\n```\r\n\r\n…so I would expect it to idle the motors after a practically imperceptible delay? Or will cycle auto-start interfere with this. I may need to get out my old PC again and figure out what Mach3 was doing I guess."}}