{"action":"opened","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4172","repository_url":"https://api.github.com/repos/MarlinFirmware/Marlin","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4172/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4172/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/4172/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/4172","id":163036575,"number":4172,"title":"Z axis not homing","user":{"login":"jaredabrandt001","id":19554372,"avatar_url":"https://avatars.githubusercontent.com/u/19554372?v=3","gravatar_id":"","url":"https://api.github.com/users/jaredabrandt001","html_url":"https://github.com/jaredabrandt001","followers_url":"https://api.github.com/users/jaredabrandt001/followers","following_url":"https://api.github.com/users/jaredabrandt001/following{/other_user}","gists_url":"https://api.github.com/users/jaredabrandt001/gists{/gist_id}","starred_url":"https://api.github.com/users/jaredabrandt001/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jaredabrandt001/subscriptions","organizations_url":"https://api.github.com/users/jaredabrandt001/orgs","repos_url":"https://api.github.com/users/jaredabrandt001/repos","events_url":"https://api.github.com/users/jaredabrandt001/events{/privacy}","received_events_url":"https://api.github.com/users/jaredabrandt001/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-06-29T21:58:46Z","updated_at":"2016-06-29T21:58:46Z","closed_at":null,"body":"Hi,\r\nI have a RepRap Prusa Mendel RAMPS 1.4.  I have ran an old version of Marlin on this machine for nearly a year, but need to get the Marlin version updated so I can use the servo functions.  I plan to add a lifting servo for the 2nd extruder so it will print cleanly.  I'm now trying to get the latest unreleased version of Marlin working.  I couldn't get the latest released version to work with my LCD.  Latest unreleased version seems to work well.\r\nSo the only issue I'm having is the Z axis not homing.  I have a simple Z axis min limit switch.  When I use autohome from LCD the X and Y home (touch 2x's now?) but the Z axis never lowers.  I can trip the Z endstop and the Z axis moves up, then back down, then I trigger the endstop again and it is finished with the homing routine.  So the Z axis and limit switches work as intended.  It just doesn't initiate the 1st homing move.  Homing speed is set proper.  I've tried G28 Z0 and it behaves the same as the LCD initiated homing, without the X and Y homing.\r\nI liked the way the homing worked with my 2013 version of Marlin.  I don't care for the autolevel or z probe features.  Any way to easily go back?\r\nMaybe something with the z probe or autolevel is set wrong for my limit switch?\r\nThanks!\r\nJared"}}
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