{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1731","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1731/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1731/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1731/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/1731","id":65059943,"number":1731,"title":"Bed autolevel isn't working on delta-printers.","user":{"login":"roboprint","id":11706205,"avatar_url":"https://avatars.githubusercontent.com/u/11706205?v=3","gravatar_id":"","url":"https://api.github.com/users/roboprint","html_url":"https://github.com/roboprint","followers_url":"https://api.github.com/users/roboprint/followers","following_url":"https://api.github.com/users/roboprint/following{/other_user}","gists_url":"https://api.github.com/users/roboprint/gists{/gist_id}","starred_url":"https://api.github.com/users/roboprint/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/roboprint/subscriptions","organizations_url":"https://api.github.com/users/roboprint/orgs","repos_url":"https://api.github.com/users/roboprint/repos","events_url":"https://api.github.com/users/roboprint/events{/privacy}","received_events_url":"https://api.github.com/users/roboprint/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/Verified%20bug","name":"Verified bug","color":"e11d21"}],"state":"open","locked":false,"assignee":{"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},"milestone":null,"comments":3,"created_at":"2015-03-29T13:12:05Z","updated_at":"2015-03-31T15:30:02Z","closed_at":null,"body":"Hello, I'm using latest firmware (commit f47fc87) with delta-printer and trying to setup auto bed level feature, but this feature isn't working at all.\r\n\r\nArray of bed level points `bed_level[][]` is filled in `G29` in `Marlin_main.cpp`. Bed level must be adjusted in function `prepare_move()`, but `adjust_delta()` is not called from `prepare_move()`, so Z-position of hotend is not adjusted at all.\r\n\r\nSee line 4268 here for reference: https://github.com/jcrocholl/Marlin/blob/deltabot/Marlin/Marlin_main.cpp#L4268\r\n\r\nAlso, then hotend moving from one row of bed calibration points to another in `G29` (i.e. then changing Y position) it moves not straight line like '---', but  touching bed in the middle of move moving like 'U' letter."},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/88133673","html_url":"https://github.com/MarlinFirmware/Marlin/issues/1731#issuecomment-88133673","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/1731","id":88133673,"user":{"login":"roboprint","id":11706205,"avatar_url":"https://avatars.githubusercontent.com/u/11706205?v=3","gravatar_id":"","url":"https://api.github.com/users/roboprint","html_url":"https://github.com/roboprint","followers_url":"https://api.github.com/users/roboprint/followers","following_url":"https://api.github.com/users/roboprint/following{/other_user}","gists_url":"https://api.github.com/users/roboprint/gists{/gist_id}","starred_url":"https://api.github.com/users/roboprint/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/roboprint/subscriptions","organizations_url":"https://api.github.com/users/roboprint/orgs","repos_url":"https://api.github.com/users/roboprint/repos","events_url":"https://api.github.com/users/roboprint/events{/privacy}","received_events_url":"https://api.github.com/users/roboprint/received_events","type":"User","site_admin":false},"created_at":"2015-03-31T15:30:02Z","updated_at":"2015-03-31T15:30:02Z","body":"adjust_delta() is fixed, but effector U-movements during changing row of bed testpoints is still exists :(\r\nI can upload video. Or can try to explain: then you issue G29 command, effector moves from home position down to bed and probes points in row (Y is constant, internal X for() loop in G29 function), for example, (X-20 Y-20), (X-10 Y-20), (X0 Y-20), (X10 Y-20) (X20 Y-20), then printer moves effector to next row: X-20 Y-10. And this movement isn't parallel to bed, effector moves using U trajectory, touching bed in the middle of movement.\r\n\r\nThis is not mechanics or general delta calibration issue. General movement (G1 X-70 Y0 Z15 => G1 X70 Y0 Z15) is done parallel to the bed.\r\n\r\nI'm not understand Marlin code very well, looks like probe_pt() must call another function to move effector in delta printers. It calls do_blocking_move_to(), which calls prepare_move_raw()."}}