{"action":"created","issue":{"url":"https://api.github.com/repos/iNavFlight/inav/issues/164","repository_url":"https://api.github.com/repos/iNavFlight/inav","labels_url":"https://api.github.com/repos/iNavFlight/inav/issues/164/labels{/name}","comments_url":"https://api.github.com/repos/iNavFlight/inav/issues/164/comments","events_url":"https://api.github.com/repos/iNavFlight/inav/issues/164/events","html_url":"https://github.com/iNavFlight/inav/issues/164","id":148726655,"number":164,"title":"gps reading wrong puts me in north sea","user":{"login":"richsemc","id":16622724,"avatar_url":"https://avatars.githubusercontent.com/u/16622724?v=3","gravatar_id":"","url":"https://api.github.com/users/richsemc","html_url":"https://github.com/richsemc","followers_url":"https://api.github.com/users/richsemc/followers","following_url":"https://api.github.com/users/richsemc/following{/other_user}","gists_url":"https://api.github.com/users/richsemc/gists{/gist_id}","starred_url":"https://api.github.com/users/richsemc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/richsemc/subscriptions","organizations_url":"https://api.github.com/users/richsemc/orgs","repos_url":"https://api.github.com/users/richsemc/repos","events_url":"https://api.github.com/users/richsemc/events{/privacy}","received_events_url":"https://api.github.com/users/richsemc/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":11,"created_at":"2016-04-15T18:01:11Z","updated_at":"2016-08-03T02:53:39Z","closed_at":null,"body":"I have a 250 quad with SPracing F3 board, with Crius CN-06 V3 Ublox GPS module.\r\nThe board is flashed with Inav and is setup with luxfloat. the compass is fully isolated from and interference , gps reads 10 sat's and shows position fine on mobile EZ-GUI, altitude measures fine when I take off. the quad flies perfect on Angle mode. and alt hold\r\nThe problem I have had for the past 4 weeks is that  gps  hold it starts flying of with it's nose down and looks as though it is going back to china in wild movements, changing all pid settings makes no difference. Pos, Posr, Mag, NavR\r\nI have used blackbox tools and converted files to csv,gpx, when I look at the co-ordinance on google maps it shows me 49km east of my position, my home position is 53.38771880 -0.370416800 it looks as though it's not taking into account the minus on the software but EZgui does\r\nlinks to attached files\r\nhttps://www.dropbox.com/s/fzalxaj5sqlvnw0/bblog154.01.csv?dl=0\r\nhttps://www.dropbox.com/s/1kgmr0taovigxyg/bblog154.01.event?dl=0\r\nhttps://www.dropbox.com/s/fu3mvg48pbvsgve/bblog154.01.gps.csv?dl=0\r\nhttps://www.dropbox.com/s/t4ebitw3ina0zbs/bblog154.01.gps.gpx?dl=0\r\nfull blackbox log file\r\nhttps://www.dropbox.com/s/intoj0xaq9vx4a0/bblog154.TXT?dl=0\r\nRichard welch"},"comment":{"url":"https://api.github.com/repos/iNavFlight/inav/issues/comments/237120197","html_url":"https://github.com/iNavFlight/inav/issues/164#issuecomment-237120197","issue_url":"https://api.github.com/repos/iNavFlight/inav/issues/164","id":237120197,"user":{"login":"digitalentity","id":11059099,"avatar_url":"https://avatars.githubusercontent.com/u/11059099?v=3","gravatar_id":"","url":"https://api.github.com/users/digitalentity","html_url":"https://github.com/digitalentity","followers_url":"https://api.github.com/users/digitalentity/followers","following_url":"https://api.github.com/users/digitalentity/following{/other_user}","gists_url":"https://api.github.com/users/digitalentity/gists{/gist_id}","starred_url":"https://api.github.com/users/digitalentity/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/digitalentity/subscriptions","organizations_url":"https://api.github.com/users/digitalentity/orgs","repos_url":"https://api.github.com/users/digitalentity/repos","events_url":"https://api.github.com/users/digitalentity/events{/privacy}","received_events_url":"https://api.github.com/users/digitalentity/received_events","type":"User","site_admin":false},"created_at":"2016-08-03T02:53:38Z","updated_at":"2016-08-03T02:53:38Z","body":"On the other hand - no need to test. You have extreme interference on your compass from power wires, ESCs, motors, PDB or battery.\r\n![image](https://cloud.githubusercontent.com/assets/11059099/17352272/abc0472e-5978-11e6-8693-a84671869309.png)\r\nIn the picture you can clearly see the correlation between throttle stick (below) and magnetometer readings (above). In all your flights I'm seing heading or ~20deg when throttle up and ~35 deg when throttle down.\r\nCan you upload a photo of your setup and a close-up of your compass placement?"}}
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