{"id":116,"date":"2013-02-08T08:57:09","date_gmt":"2013-02-08T07:57:09","guid":{"rendered":"http:\/\/honza.paws.cz\/?p=116"},"modified":"2013-02-08T09:10:55","modified_gmt":"2013-02-08T08:10:55","slug":"ultrazvukovy-meric-vzdalenosti","status":"publish","type":"post","link":"http:\/\/honza.paws.cz\/?p=116","title":{"rendered":"Ultrazvukov\u00fd m\u011b\u0159i\u010d vzd\u00e1lenosti"},"content":{"rendered":"<p>Koupil jsem jej z DX.com, m\u00e1 ozna\u010den\u00ed HC-SR04, hledal jsem n\u00e1vod jak modul zprovoznit a na\u0161el odkaz na str\u00e1nku <a href=\"http:\/\/www.raspberrypi-spy.co.uk\/2012\/12\/ultrasonic-distance-measurement-using-python-part-1\/\" title=\"rpi spy\" target=\"_blank\">http:\/\/www.raspberrypi-spy.co.uk\/2012\/12\/ultrasonic-distance-measurement-using-python-part-1\/<\/a>. S malou obm\u011bnou v\u0161e funguje. M\u00edsto d\u011bli\u010de nap\u011bt\u00ed jsem za\u0159adil N-kan\u00e1l FET BS107, dle n\u00e1vodu <a href=\"http:\/\/www.astromik.org\/malymenu\/menuraspi.htm\" target=\"_blank\">na p\u0159ipojen\u00ed I\/O expanderu<\/a> port\u016f. Ten odd\u011bl\u00ed nap\u011b\u0165ov\u00e9 hladiny 3,3&nbsp;V pro RPi a 5&nbsp;V pro modul. Jako pull-up resistor jsem pou\u017eil v\u010dera omylem koupen\u00fd 330&nbsp;kOhm, ale funguje to i s 10&nbsp;k potenciometrem prota\u017een\u00fdm p\u0159es krajn\u00ed svorky. To je v\u0161e, program ze str\u00e1nky raspberry-spy funguje bez pot\u00ed\u017e\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Koupil jsem jej z DX.com, m\u00e1 ozna\u010den\u00ed HC-SR04, hledal jsem n\u00e1vod jak modul zprovoznit a na\u0161el odkaz na str\u00e1nku http:\/\/www.raspberrypi-spy.co.uk\/2012\/12\/ultrasonic-distance-measurement-using-python-part-1\/. S malou obm\u011bnou v\u0161e funguje. M\u00edsto d\u011bli\u010de nap\u011bt\u00ed jsem za\u0159adil N-kan\u00e1l FET BS107, dle n\u00e1vodu na p\u0159ipojen\u00ed I\/O expanderu port\u016f. Ten odd\u011bl\u00ed nap\u011b\u0165ov\u00e9 hladiny 3,3&nbsp;V pro RPi a 5&nbsp;V pro modul. Jako pull-up resistor jsem [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"_links":{"self":[{"href":"http:\/\/honza.paws.cz\/index.php?rest_route=\/wp\/v2\/posts\/116"}],"collection":[{"href":"http:\/\/honza.paws.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/honza.paws.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/honza.paws.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/honza.paws.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=116"}],"version-history":[{"count":2,"href":"http:\/\/honza.paws.cz\/index.php?rest_route=\/wp\/v2\/posts\/116\/revisions"}],"predecessor-version":[{"id":118,"href":"http:\/\/honza.paws.cz\/index.php?rest_route=\/wp\/v2\/posts\/116\/revisions\/118"}],"wp:attachment":[{"href":"http:\/\/honza.paws.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/honza.paws.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=116"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/honza.paws.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}