{"id":29,"date":"2011-07-25T09:32:45","date_gmt":"2011-07-25T13:32:45","guid":{"rendered":"http:\/\/fll-freak.com\/blog\/?page_id=29"},"modified":"2015-10-14T21:57:07","modified_gmt":"2015-10-15T01:57:07","slug":"sailboat-race-timer","status":"publish","type":"page","link":"https:\/\/fll-freak.com\/blog\/?page_id=29","title":{"rendered":"Sailboat race timer"},"content":{"rendered":"<p>I am working on a sailboat race timer. This device blows a car horn at set intervals to warn a sailboat fleet of an impending start. My primary use is for solo practice on vacation. The unit runs from an MSP430 processor and a small motorcycle battery. Currently I am hung up on a problem where the processor reboots each time the horn blows. It must be a ground bounce\/current spike problem, but I have not been able to track it down. I even separated the power systems via an optocoupler and it still reboots.<\/p>\n<p>Swapped the MSP430 for a PIC and things seem to be working much better. Now I can run the whole thing off the same 12V motorcycle battery without needing a separate power source for the electronics.<\/p>\n<p>Next step is to start board layout.<\/p>\n<ul>\n<li>Design: %90<\/li>\n<li>Construction: %60<\/li>\n<li>Test: %20<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>I am working on a sailboat race timer. This device blows a car horn at set intervals to warn a sailboat fleet of an impending start. My primary use is for solo practice on vacation. The unit runs from an &hellip; <a href=\"https:\/\/fll-freak.com\/blog\/?page_id=29\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-29","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=\/wp\/v2\/pages\/29","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=29"}],"version-history":[{"count":3,"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=\/wp\/v2\/pages\/29\/revisions"}],"predecessor-version":[{"id":916,"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=\/wp\/v2\/pages\/29\/revisions\/916"}],"wp:attachment":[{"href":"https:\/\/fll-freak.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=29"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}