{"action":"created","issue":{"url":"https://api.github.com/repos/kriswiner/MPU9250/issues/202","repository_url":"https://api.github.com/repos/kriswiner/MPU9250","labels_url":"https://api.github.com/repos/kriswiner/MPU9250/issues/202/labels{/name}","comments_url":"https://api.github.com/repos/kriswiner/MPU9250/issues/202/comments","events_url":"https://api.github.com/repos/kriswiner/MPU9250/issues/202/events","html_url":"https://github.com/kriswiner/MPU9250/issues/202","id":273098023,"number":202,"title":"where to buy MPU9250 with breakout?","user":{"login":"scheng98","id":15881047,"avatar_url":"https://avatars1.githubusercontent.com/u/15881047?v=4","gravatar_id":"","url":"https://api.github.com/users/scheng98","html_url":"https://github.com/scheng98","followers_url":"https://api.github.com/users/scheng98/followers","following_url":"https://api.github.com/users/scheng98/following{/other_user}","gists_url":"https://api.github.com/users/scheng98/gists{/gist_id}","starred_url":"https://api.github.com/users/scheng98/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/scheng98/subscriptions","organizations_url":"https://api.github.com/users/scheng98/orgs","repos_url":"https://api.github.com/users/scheng98/repos","events_url":"https://api.github.com/users/scheng98/events{/privacy}","received_events_url":"https://api.github.com/users/scheng98/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-11-11T00:32:55Z","updated_at":"2017-11-11T00:38:53Z","closed_at":null,"author_association":"NONE","body":"Hi Kris,\r\n\r\nI got one MPU9250 working fine. \r\n\r\nLater my co-worker bough 4 more MPU9250s (actually MPU9255, WHOAMI returns 0x73) from internet and it's a complete mess. All of 4 new ones looks like same, but three of them failed in i2c scan() routine you provided. I also verified the result on a scope and a logic analyzer. Clearly these MPU9250 didn't do proper action in I2C address phase on 9th clock. The last one is able to do I2C communication but its performance is also bad compared with my original MPU9250. I tried all suggestions I can find on your posts and on internet with pull up reigster/power supply/int pin/reset routine. But none of them works. So I simply stopped wasting time there. \r\n\r\nWould you help to recommend a good vendor of MPU9250 with breakout that you tested before?\r\n\r\nthanks again for your help and I own you as many beers as you want. :-)\r\n\r\ncheers,\r\n\r\nSteve"},"comment":{"url":"https://api.github.com/repos/kriswiner/MPU9250/issues/comments/343623643","html_url":"https://github.com/kriswiner/MPU9250/issues/202#issuecomment-343623643","issue_url":"https://api.github.com/repos/kriswiner/MPU9250/issues/202","id":343623643,"user":{"login":"kriswiner","id":6698410,"avatar_url":"https://avatars3.githubusercontent.com/u/6698410?v=4","gravatar_id":"","url":"https://api.github.com/users/kriswiner","html_url":"https://github.com/kriswiner","followers_url":"https://api.github.com/users/kriswiner/followers","following_url":"https://api.github.com/users/kriswiner/following{/other_user}","gists_url":"https://api.github.com/users/kriswiner/gists{/gist_id}","starred_url":"https://api.github.com/users/kriswiner/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kriswiner/subscriptions","organizations_url":"https://api.github.com/users/kriswiner/orgs","repos_url":"https://api.github.com/users/kriswiner/repos","events_url":"https://api.github.com/users/kriswiner/events{/privacy}","received_events_url":"https://api.github.com/users/kriswiner/received_events","type":"User","site_admin":false},"created_at":"2017-11-11T00:38:53Z","updated_at":"2017-11-11T00:38:53Z","author_association":"OWNER","body":"I make two varieties, one for breadboard and one for mounting on the back\nof Teensies and Dragonflies. You can find them both here:\n\nhttps://www.tindie.com/products/onehorse/mpu9250-teensy-3x-add-on-shields/?pt=ac_prod_search\n\nThere is also an addon for my Ladybug STM32L4 board here:\n\nhttps://www.tindie.com/products/TleraCorp/mpu9250-add-ons-for-ladybug/?pt=ac_prod_search\n\nand lastly, I can make custom boards but this is more expensive, etc.\n\nOn Fri, Nov 10, 2017 at 4:32 PM, scheng98 <notifications@github.com> wrote:\n\n> Hi Kris,\n>\n> I got one MPU9250 working fine.\n>\n> Later my co-worker bough 4 more MPU9250s (actually MPU9255, WHOAMI returns\n> 0x73) from internet and it's a complete mess. All of 4 new ones looks like\n> same, but three of them failed in i2c scan() routine you provided. I also\n> verified the result on a scope and a logic analyzer. Clearly these MPU9250\n> The last one is able to do I2C communication but its performance is also\n> bad compared with my original MPU9250. I tried all suggestions I can find\n> on your posts and on internet with pull up reigster/power supply/int\n> pin/reset routine. But none of them works. So I simply stopped wasting time\n> there.\n>\n> Would you help to recommend a good vendor of MPU9250 with breakout that\n> you tested before?\n>\n> thanks again for your help and I own you as many beers as you want. :-)\n>\n> cheers,\n>\n> Steve\n>\n> —\n> You are receiving this because you are subscribed to this thread.\n> Reply to this email directly, view it on GitHub\n> <https://github.com/kriswiner/MPU9250/issues/202>, or mute the thread\n> <https://github.com/notifications/unsubscribe-auth/AGY1qtxTDQdUUv_PdxI-rH_dZxTubRQBks5s1Os4gaJpZM4QaRoK>\n> .\n>\n"}}
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