{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12248","repository_url":"https://api.github.com/repos/MarlinFirmware/Marlin","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12248/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12248/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12248/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/12248","id":374697934,"node_id":"MDU6SXNzdWUzNzQ2OTc5MzQ=","number":12248,"title":"TMC2130 Sensorless Homing feels rougher in 1.1.9","user":{"login":"FelixHauser","id":6338374,"node_id":"MDQ6VXNlcjYzMzgzNzQ=","avatar_url":"https://avatars2.githubusercontent.com/u/6338374?v=4","gravatar_id":"","url":"https://api.github.com/users/FelixHauser","html_url":"https://github.com/FelixHauser","followers_url":"https://api.github.com/users/FelixHauser/followers","following_url":"https://api.github.com/users/FelixHauser/following{/other_user}","gists_url":"https://api.github.com/users/FelixHauser/gists{/gist_id}","starred_url":"https://api.github.com/users/FelixHauser/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/FelixHauser/subscriptions","organizations_url":"https://api.github.com/users/FelixHauser/orgs","repos_url":"https://api.github.com/users/FelixHauser/repos","events_url":"https://api.github.com/users/FelixHauser/events{/privacy}","received_events_url":"https://api.github.com/users/FelixHauser/received_events","type":"User","site_admin":false},"labels":[{"id":848340248,"node_id":"MDU6TGFiZWw4NDgzNDAyNDg=","url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/F:%20Trinamic","name":"F: Trinamic","color":"3cc9c9","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2018-10-27T22:56:03Z","updated_at":"2018-12-22T01:50:58Z","closed_at":null,"author_association":"NONE","body":"### Description\r\n\r\nSensorless Homing with Marlin 1.1.9 feels a lot rougher as it was with Marlin 1.1.8\r\n\r\n### Steps to Reproduce\r\n\r\nUpdate to Marlin 1.1.9 with the equivalent setting as with 1.1.8\r\n\r\n**Expected behavior:** \r\n\r\nI expected sensorless homing to be as quiet as it was before.\r\n\r\n**Actual behavior:** \r\n\r\nIt's not. It feels like the motors are ramming to the MIN positions for the homing to trigger. It's quite a lot noisier, evidently.\r\n\r\n#### Additional Information\r\n\r\nSo I've been finally able to tackle down on Marlin 1.1.9. My printer is a cartesian prusa-like with a steel frame. Out of the 5 printers I own, this is the one delivering the nicest parts. The controller board is a Rumba v1.1 of which I'm pretty happy about. The X and Y axis are driven by 2 original TMC2130s, connected to the correct ports. The Z and E axis were driven by 2 original TMC2208 on Stand Alone Mode. Everything was working really well, but I wanted to take advantage of the new features of v1.1.9  \r\nI copy-pasted the settings of v1.1.8: steps/mm, federates, accelerations etc. I also copied (or transferred) the settings for the TMC drivers. I ended up changing the Extruder driver in order to avoid the problem mentioned on issue #11825 but everything else was ok. I configured as Software-SPI with the same pins I used before (MISO:50; MOSI:51 and SCK:52) ans so far so good.\r\nThe only problem I'm seeing is, as mentioned, that the Sensorless Homing seems way rougher compared as it was before. With 1.1.8 seemed much smoother. I tried to dial the sensitivity down to 5, but it doesn't help all that much. Lower than 5 leads to false positives. Also, I disabled the homing bump as suggested. Talking to a printing buddy of mine, he experienced the same behavior using the same board and drivers.\r\n\r\nIs this behavior normal or is there something I missed to configure? Is somebody else experiencing this?. I haven't seen any issue regarding this topic, if I missed I apologize in advance.\r\n\r\nThanks in advance.\r\n\r\n\r\n\r\n\r\n\r\n\r\n[Configuration_1.1.8.txt](https://github.com/MarlinFirmware/Marlin/files/2522291/Configuration_1.1.8.txt)\r\n[Configuration_1.1.9.txt](https://github.com/MarlinFirmware/Marlin/files/2522292/Configuration_1.1.9.txt)\r\n[Configuration_adv_1.1.8.txt](https://github.com/MarlinFirmware/Marlin/files/2522293/Configuration_adv_1.1.8.txt)\r\n[Configuration_adv_1.1.9.txt](https://github.com/MarlinFirmware/Marlin/files/2522294/Configuration_adv_1.1.9.txt)\r\n[pins_RUMBA_1.1.8.txt](https://github.com/MarlinFirmware/Marlin/files/2522295/pins_RUMBA_1.1.8.txt)\r\n[pins_RUMBA_1.1.9.txt](https://github.com/MarlinFirmware/Marlin/files/2522296/pins_RUMBA_1.1.9.txt)\r\n\r\n \r\n"},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/449536539","html_url":"https://github.com/MarlinFirmware/Marlin/issues/12248#issuecomment-449536539","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/12248","id":449536539,"node_id":"MDEyOklzc3VlQ29tbWVudDQ0OTUzNjUzOQ==","user":{"login":"worlderic","id":19903116,"node_id":"MDQ6VXNlcjE5OTAzMTE2","avatar_url":"https://avatars2.githubusercontent.com/u/19903116?v=4","gravatar_id":"","url":"https://api.github.com/users/worlderic","html_url":"https://github.com/worlderic","followers_url":"https://api.github.com/users/worlderic/followers","following_url":"https://api.github.com/users/worlderic/following{/other_user}","gists_url":"https://api.github.com/users/worlderic/gists{/gist_id}","starred_url":"https://api.github.com/users/worlderic/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/worlderic/subscriptions","organizations_url":"https://api.github.com/users/worlderic/orgs","repos_url":"https://api.github.com/users/worlderic/repos","events_url":"https://api.github.com/users/worlderic/events{/privacy}","received_events_url":"https://api.github.com/users/worlderic/received_events","type":"User","site_admin":false},"created_at":"2018-12-22T01:50:58Z","updated_at":"2018-12-22T01:50:58Z","author_association":"NONE","body":"sensorless homing need “stall guard”，this only work in tmc2130‘s coolstep mode，&must turn off stealchop，so noise is larger"}}
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