/challenges-projects/design-challenges/in-the-air-design-challenge/b/blog/posts/airmobile---30---bluetooth-issuesAfter recording this video, I closed down the bonnet with the intent to go around and collect some data. But as soon as I closed the bonnet, AirMobile sensor disconnected from the smartphone. I reopened the bonnet, and connection was backThe problem en-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/in-the-air-design-challenge/b/blog/posts/airmobile---30---bluetooth-issuesSat, 28 Feb 2015 01:43:21 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:390aaaa6-aaf9-4831-b519-6608323133c2mcb10<p><span>[mention:af9afcdd12d240cc981e22fc1d60c025:e9ed411860ed4f2ba0265705b8793d05]</span></p><p>The bonnet earthing or lack of earthing is not the issue with your bluetooth.</p><p>&nbsp;</p><p>You have a very efficient shield placed inbetween both halves of the bluetooth communication path. (unit and phone)</p><p>Because bluetooth is very low power levels (RF wise), the path loss when the bonnet is shut, causes this issue.</p><p>&nbsp;</p><p>With it open you were most likely getting a signal from under the rear of the bonnet to your phone, and that gap goes when it is closed.</p><p>&nbsp;</p><p>The use of an external antenna is probably the only option.</p><p>&nbsp;</p><p>Mark</p><img src="https://community.element14.com/aggbug?PostID=20002&AppID=102&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/challenges-projects/design-challenges/in-the-air-design-challenge/b/blog/posts/airmobile---30---bluetooth-issuesTue, 24 Feb 2015 11:03:11 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:390aaaa6-aaf9-4831-b519-6608323133c2fvan0<p>Ah, last minute problems, always a pain in the rear <span>[View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-390aaaa6-aaf9-4831-b519-6608323133c2/contentimage_5F00_1.png:16:16]</span> Trying to get some resolved myself ...</p><img src="https://community.element14.com/aggbug?PostID=20002&AppID=102&AppType=Weblog&ContentType=0" width="1" height="1">