{"action":"closed","issue":{"url":"https://api.github.com/repos/synthetos/g2/issues/72","labels_url":"https://api.github.com/repos/synthetos/g2/issues/72/labels{/name}","comments_url":"https://api.github.com/repos/synthetos/g2/issues/72/comments","events_url":"https://api.github.com/repos/synthetos/g2/issues/72/events","html_url":"https://github.com/synthetos/g2/issues/72","id":66604042,"number":72,"title":"Missed acc-/dec-ellerations","user":{"login":"stg","id":304625,"avatar_url":"https://avatars.githubusercontent.com/u/304625?v=3","gravatar_id":"","url":"https://api.github.com/users/stg","html_url":"https://github.com/stg","followers_url":"https://api.github.com/users/stg/followers","following_url":"https://api.github.com/users/stg/following{/other_user}","gists_url":"https://api.github.com/users/stg/gists{/gist_id}","starred_url":"https://api.github.com/users/stg/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/stg/subscriptions","organizations_url":"https://api.github.com/users/stg/orgs","repos_url":"https://api.github.com/users/stg/repos","events_url":"https://api.github.com/users/stg/events{/privacy}","received_events_url":"https://api.github.com/users/stg/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/synthetos/g2/labels/bug","name":"bug","color":"fc2929"}],"state":"closed","locked":false,"assignee":{"login":"giseburt","id":386001,"avatar_url":"https://avatars.githubusercontent.com/u/386001?v=3","gravatar_id":"","url":"https://api.github.com/users/giseburt","html_url":"https://github.com/giseburt","followers_url":"https://api.github.com/users/giseburt/followers","following_url":"https://api.github.com/users/giseburt/following{/other_user}","gists_url":"https://api.github.com/users/giseburt/gists{/gist_id}","starred_url":"https://api.github.com/users/giseburt/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/giseburt/subscriptions","organizations_url":"https://api.github.com/users/giseburt/orgs","repos_url":"https://api.github.com/users/giseburt/repos","events_url":"https://api.github.com/users/giseburt/events{/privacy}","received_events_url":"https://api.github.com/users/giseburt/received_events","type":"User","site_admin":false},"milestone":null,"comments":20,"created_at":"2015-04-06T13:14:57Z","updated_at":"2015-04-08T17:25:40Z","closed_at":"2015-04-08T17:25:40Z","body":"From #65:\r\n\r\n    When issuing multiple fast feeds with short duration on an empty queue (or double-clicking\r\n    move buttons in Chilipeppr with say 10mm). Replicated easily when machine is still by\r\n    issuing two G0 X10 (G91 mode) immediately after each other.\r\n    \r\n    This will accelerate, feed, decelerate for the first move, but then jump straight back to full\r\n    feed speed at the start of the second command (acceleration is skipped), followed by\r\n    normal deceleration.\r\n    \r\n    This causes loss of tracking every time one accidentally hits the move buttons too quickly.\r\n\r\n[edge 82.11]\r\n\r\nToday I observed similar behavior while running a program containing many short segments - movements without acceleration are being performed causing loss of tracking.\r\n\r\nI can't be sure that queue starvation is not occurring, as I don't know of a sure fire way to detect this (is there a way?), however the queue indicator in Chilipeppr never really goes beyond 2/3, but this also occurs when the queue is indicated to be pretty much full (far left).\r\n\r\nThe problem is **repeatable**.\r\n\r\nIs there anything known that should cause this behavior?\r\n\r\nAgain, the g-code contains *many short segments in the areas where the problem is observed* and I am guessing this is directly related. Most of the moves incorrectly performed are 0.25mm long, following and followed by moves at 90° bends of similar length.\r\n\r\nLet me know if there is interest in the configuration and/or offending g-code."}}