{"action":"created","issue":{"url":"https://api.github.com/repos/jetty840/Sailfish-MightyBoardFirmware/issues/165","repository_url":"https://api.github.com/repos/jetty840/Sailfish-MightyBoardFirmware","labels_url":"https://api.github.com/repos/jetty840/Sailfish-MightyBoardFirmware/issues/165/labels{/name}","comments_url":"https://api.github.com/repos/jetty840/Sailfish-MightyBoardFirmware/issues/165/comments","events_url":"https://api.github.com/repos/jetty840/Sailfish-MightyBoardFirmware/issues/165/events","html_url":"https://github.com/jetty840/Sailfish-MightyBoardFirmware/issues/165","id":168147283,"number":165,"title":"Sailfish causes \"shuddering and jerking\" even with small \"max speed change\" value","user":{"login":"caall99","id":17706344,"avatar_url":"https://avatars.githubusercontent.com/u/17706344?v=3","gravatar_id":"","url":"https://api.github.com/users/caall99","html_url":"https://github.com/caall99","followers_url":"https://api.github.com/users/caall99/followers","following_url":"https://api.github.com/users/caall99/following{/other_user}","gists_url":"https://api.github.com/users/caall99/gists{/gist_id}","starred_url":"https://api.github.com/users/caall99/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/caall99/subscriptions","organizations_url":"https://api.github.com/users/caall99/orgs","repos_url":"https://api.github.com/users/caall99/repos","events_url":"https://api.github.com/users/caall99/events{/privacy}","received_events_url":"https://api.github.com/users/caall99/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":19,"created_at":"2016-07-28T17:08:34Z","updated_at":"2016-08-29T15:30:54Z","closed_at":null,"body":"http://3dprintboard.com/showthread.php?15326-Qidi-Tech-1-Replicator-2-clone&p=94492&viewfull=1#post94492\r\n\r\nPlease refer to the link above, and read through a few pages of posts. I have been suffering from jerking and shuddering problems with my printer regardless of the slicer I am using. Others with the Qidi Tech 7.8 Sailfish firmware have experienced the same problems. There seems to be an issue with Qidi Tech 7.8 Sailfish firmware, or perhaps all Sailfish versions, that limits the firmware's ability to apply acceleration to small moves, such as small features and loops. It seems that acceleration is ignored and that the tool head jerks through all the movements resulting in skipped steps and ruined prints. \r\n\r\nI have my \"max speed change\" setting at 7, vs. the default 15, and am still suffering from this problem. I would really enjoy the opportunity to discuss this problem in more detail... and if it is in fact a limitation of Sailfish, then perhaps I can share enough information for you to remedy it.\r\n\r\nIt is possible that the Qidi Tech 7.8 firmware is complete trash and based on an old version of Sailfish, but I am unsure of how to update my Qidi Tech MightyBoard controller (with Atmega2560) to an official Sailfish release. Qidi Tech says it cannot be done, under any circumstance.\r\n\r\nThanks!\r\nChris"},"comment":{"url":"https://api.github.com/repos/jetty840/Sailfish-MightyBoardFirmware/issues/comments/243159469","html_url":"https://github.com/jetty840/Sailfish-MightyBoardFirmware/issues/165#issuecomment-243159469","issue_url":"https://api.github.com/repos/jetty840/Sailfish-MightyBoardFirmware/issues/165","id":243159469,"user":{"login":"gewaechshaus","id":7628545,"avatar_url":"https://avatars.githubusercontent.com/u/7628545?v=3","gravatar_id":"","url":"https://api.github.com/users/gewaechshaus","html_url":"https://github.com/gewaechshaus","followers_url":"https://api.github.com/users/gewaechshaus/followers","following_url":"https://api.github.com/users/gewaechshaus/following{/other_user}","gists_url":"https://api.github.com/users/gewaechshaus/gists{/gist_id}","starred_url":"https://api.github.com/users/gewaechshaus/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gewaechshaus/subscriptions","organizations_url":"https://api.github.com/users/gewaechshaus/orgs","repos_url":"https://api.github.com/users/gewaechshaus/repos","events_url":"https://api.github.com/users/gewaechshaus/events{/privacy}","received_events_url":"https://api.github.com/users/gewaechshaus/received_events","type":"User","site_admin":false},"created_at":"2016-08-29T15:30:54Z","updated_at":"2016-08-29T15:30:54Z","body":"Very nice thread here..."}}
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