{"action":"opened","issue":{"url":"https://api.github.com/repos/PX4/Firmware/issues/5627","repository_url":"https://api.github.com/repos/PX4/Firmware","labels_url":"https://api.github.com/repos/PX4/Firmware/issues/5627/labels{/name}","comments_url":"https://api.github.com/repos/PX4/Firmware/issues/5627/comments","events_url":"https://api.github.com/repos/PX4/Firmware/issues/5627/events","html_url":"https://github.com/PX4/Firmware/issues/5627","id":181986604,"number":5627,"title":"Barometric Altimeter Calibration.","user":{"login":"tubeme","id":12617619,"avatar_url":"https://avatars.githubusercontent.com/u/12617619?v=3","gravatar_id":"","url":"https://api.github.com/users/tubeme","html_url":"https://github.com/tubeme","followers_url":"https://api.github.com/users/tubeme/followers","following_url":"https://api.github.com/users/tubeme/following{/other_user}","gists_url":"https://api.github.com/users/tubeme/gists{/gist_id}","starred_url":"https://api.github.com/users/tubeme/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tubeme/subscriptions","organizations_url":"https://api.github.com/users/tubeme/orgs","repos_url":"https://api.github.com/users/tubeme/repos","events_url":"https://api.github.com/users/tubeme/events{/privacy}","received_events_url":"https://api.github.com/users/tubeme/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-10-10T10:57:37Z","updated_at":"2016-10-10T10:57:37Z","closed_at":null,"body":"Part of our flights are at see level. We have a lot of logs like this.\r\n\r\n![baro altitude](https://cloud.githubusercontent.com/assets/12617619/19233889/0f16a3ba-8ef1-11e6-9c5b-e962209bca35.png)\r\n\r\nIf PX4 is on the ground and has a GPS lock, the GPS altitude reading should be pretty stable and correct, given the machine is not moving. This could be used to some how calibrate the barometric sensor, prior flight. Or at least give us the option to calibrate it manually. "}}
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