{"id":743,"date":"2018-03-24T10:59:42","date_gmt":"2018-03-24T10:59:42","guid":{"rendered":"http:\/\/fambach.net\/?p=743"},"modified":"2026-10-10T11:12:45","modified_gmt":"2026-10-10T11:12:45","slug":"ardunino-mit-dht10-3","status":"publish","type":"post","link":"https:\/\/www.fambach.net\/en\/ardunino-mit-dht10-3\/","title":{"rendered":"Arduino \u2013 HC-SR04 Distance Sensor"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/#Grundlagen\" >Foundations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/#Aufbau\" >Structure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/#Schaltung\" >Circuit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/#Testprogramm\" >Test programme<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/#Output\" >Output<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/#Verwandte_Beitrage\" >Related Posts<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/#Quellen\" >Sources<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">Ansteuerung des HC-SR04 Ultraschall-Entfernungsmessers mit Hilfe des Arduino UNO.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"grundlagen\"><span class=\"ez-toc-section\" id=\"Grundlagen\"><\/span>Foundations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-embed-wordpress wp-block-embed is-type-wp-embed is-provider-stefan-039-s-webblog\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"14myQVquMV\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.fambach.net\/en\/sr-04-ultraschall-entfernungsmesser\/\" class=\"ub-content-link__anchor\">HC-SR04 Distance Sensor<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/blockquote><iframe loading=\"lazy\" title=\"\u201eHC-SR04 Distance Sensor \u2014 Stefan&#039;s WebBlog\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"https:\/\/www.fambach.net\/sr-04-ultraschall-entfernungsmesser\/embed\/#?secret=14myQVquMV\" data-secret=\"14myQVquMV\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"aufbau\"><span class=\"ez-toc-section\" id=\"Aufbau\"><\/span>Structure<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"653\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095347.jpg\" alt=\"Arduino mit Prototyping Board und SR04 Verkabelung perspektivisch\" data-id=\"752\" data-full-url=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095347.jpg\" data-link=\"https:\/\/www.fambach.net\/ardunino-mit-dht10-3\/20180324_095347\/\" class=\"wp-image-752\" srcset=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095347.jpg 800w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095347-15x12.jpg 15w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095347-300x245.jpg 300w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095347-768x627.jpg 768w\" sizes=\"auto, (max-width: 599px) calc(100vw - 50px), (max-width: 767px) calc(100vw - 70px), (max-width: 991px) 429px, (max-width: 1199px) 637px, 354px\"><figcaption class=\"blocks-gallery-item__caption\">Arduino mit Prototyping Board und SR04 Verkabelung perspektivisch<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"761\" src=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095339.jpg\" alt=\"Arduino mit Prototyping Board und SR04 Verkabelung perspektivisch\" data-id=\"751\" data-full-url=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095339.jpg\" data-link=\"https:\/\/www.fambach.net\/ardunino-mit-dht10-3\/20180324_095339\/\" class=\"wp-image-751\" srcset=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095339.jpg 800w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095339-13x12.jpg 13w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095339-300x285.jpg 300w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/20180324_095339-768x731.jpg 768w\" sizes=\"auto, (max-width: 599px) calc(100vw - 50px), (max-width: 767px) calc(100vw - 70px), (max-width: 991px) 429px, (max-width: 1199px) 637px, 354px\"><figcaption class=\"blocks-gallery-item__caption\">Arduino mit Prototyping Board und SR04 Verkabelung perspektivisch<\/figcaption><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"schaltung\"><span class=\"ez-toc-section\" id=\"Schaltung\"><\/span>Circuit<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">(Ich habe nachtr\u00e4glich noch die Pins von 0\/1 auf 2\/3 ge\u00e4ndert, weil an 0\/1 noch der ISP h\u00e4ngt).<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"679\" src=\"https:\/\/fambach.net\/wp-content\/uploads\/2018\/03\/RaspberryWithSR04_-1024x679.png\" alt=\"\" class=\"wp-image-755\" srcset=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/RaspberryWithSR04_-1024x679.png 1024w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/RaspberryWithSR04_-18x12.png 18w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/RaspberryWithSR04_-300x199.png 300w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/RaspberryWithSR04_-768x509.png 768w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/RaspberryWithSR04_.png 1158w\" sizes=\"auto, (max-width: 599px) calc(100vw - 50px), (max-width: 767px) calc(100vw - 70px), (max-width: 991px) 429px, (max-width: 1199px) 637px, 354px\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"testprogramm\"><span class=\"ez-toc-section\" id=\"Testprogramm\"><\/span>Test programme<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hier ein kleines Testprogramm. Es filtert zu kleine und zu gro\u00dfe Werte heraus und erm\u00f6glicht die Mittelwertbildung \u00fcber ein definiertes Intervall.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Source code <code>HCSR04Test.ino<\/code> (<span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/gist.github.com\/sfambach\/e4acc49c7a767fc160d487519b484e59\" class=\"ub-content-link__anchor\">GitHub Gist<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span>)<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp\">\/\/ *************************************************\n\/\/ SR04 Ultrasonic Distance Sensor\n\/\/ time to distance conversion is\n\/\/ divide by 2 (both ways to the obstical and back)\n\/\/ divide by sonic constant 29.1\n#define TRIGGER_PIN   3\n#define ECHO_PIN      2    \n#define SC_MM         5.82\n#define SC_CM         58.2\n\n#define MAX_DUR       300 * 58.2 \/\/ ~3m in dur \n#define MIN_DUR       2 * 58.2 \/\/ ~2cm in dur\n#define TO_SMALL      -1\n#define TO_BIG        -2\n#define INT_TO_SMALL  -3\n\n\n\/** get duration *\/\nlong getDur(int interval){\n  if(interval &lt; 1) return -3;\n  long dur=0;\n  \n  for(int i = 0; i &lt; interval; i++ ){\n    \/\/ init sensor\n    digitalWrite(TRIGGER_PIN, LOW);\n    delayMicroseconds(3);\n    noInterrupts();  \n  \n    \/\/ start 10 us pulse\n    digitalWrite(TRIGGER_PIN, HIGH); \n    delayMicroseconds(10);\n    digitalWrite(TRIGGER_PIN, LOW);\n    \n    dur += pulseIn(ECHO_PIN, HIGH); \/\/ determine the time\n    interrupts();\n    \n  }\n\n  dur \/= interval;\n  if(dur &gt; MAX_DUR ) { return TO_BIG;}\n \/\/ else if (dur &lt; MIN_DUR){ return TO_SMALL;}\n  return dur;\n}\n \nvoid initDist(){ pinMode(TRIGGER_PIN, OUTPUT); pinMode(ECHO_PIN, INPUT);}\n\n\/** get the distance in centi meter*\/\ndouble getDistCM(long dur){ return (dur \/ SC_CM);}\n\n\/** get the distance in milli meter*\/\nlong getDistMM(long dur) { return (dur \/ SC_MM);}\n\/\/ *************************************************\n\nvoid setup(){\n  Serial.begin(9600); \n  while(!Serial){delay(1);} \/\/ wait until the serial is ok (only for Leonardo)\n  initDist();\n}\n\nvoid loop (){\n  \n  Serial.print(\"Current distance is: \"); \n  long dur = getDur(5);\n  if(dur &gt; 0) Serial.println(getDistCM(dur));\n  else if( dur == TO_BIG) Serial.println(\"TO FAR\");\n  else if( dur == TO_SMALL) Serial.println(\"TO NEAR\");\n  delay(1000); \/\/ wait a second\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/fambach.net\/wp-content\/uploads\/2018\/03\/SR04Test.ino\" class=\"ub-content-link__anchor\">SR04Test.ino<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hier k\u00f6nnte jetzt noch der Median angewendet werden, um Ausrei\u00dfer herauszunehmen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In der Praxis bietet es sich wahrscheinlich an, die Millimeter wegzuk\u00fcrzen und nur die Zentimeterwerte, die wesentlich geringeren Schwankungen unterliegen, zu verwenden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"output\"><span class=\"ez-toc-section\" id=\"Output\"><\/span>Output<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"616\" height=\"412\" src=\"https:\/\/fambach.net\/wp-content\/uploads\/2018\/03\/2018-03-24-11_52_04-OuputSR04Test.png\" alt=\"\" class=\"wp-image-758\" srcset=\"https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/2018-03-24-11_52_04-OuputSR04Test.png 616w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/2018-03-24-11_52_04-OuputSR04Test-18x12.png 18w, https:\/\/www.fambach.net\/wp-content\/uploads\/2018\/03\/2018-03-24-11_52_04-OuputSR04Test-300x201.png 300w\" sizes=\"auto, (max-width: 599px) calc(100vw - 50px), (max-width: 767px) calc(100vw - 70px), (max-width: 991px) 429px, (max-width: 1199px) 637px, 354px\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"verwandte-beitraege\"><span class=\"ez-toc-section\" id=\"Verwandte_Beitrage\"><\/span>Related Posts<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<div class=\"display-posts-listing\"><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/ftmini-laser\/\">TF Mini Laser Rangefinder<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/gy-530-vl53l0x-laserentfernungsmesser\/\">GY-530 VL53L0X Laser Rangefinder<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/rc-auto-mit-ps2-controller\/\">RC car with PS2 controller<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/ardunino-mit-dht10-3\/\">Arduino \u2013 HC-SR04 Entfernungsmesser<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/raspberry-pi-3-us-100\/\">Controlling the US-100 distance sensor with a Raspberry Pi 3<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/us-100\/\">US-100<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/sr-04-ultraschall-entfernungsmesser\/\">HC-SR04 Distance Sensor<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><div class=\"listing-item\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a class=\"title ub-content-link__anchor\" href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/\">US-015<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"quellen\"><span class=\"ez-toc-section\" id=\"Quellen\"><\/span>Sources<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-embed-wordpress wp-block-embed is-type-wp-embed is-provider-mikrocontroller-elektronik-de\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"4E9d0wBXwa\"><span class=\"ub-content-link ub-content-link--ok ub-content-link--status-after\"><a href=\"https:\/\/www.mikrocontroller-elektronik.de\/ultraschallsensor-hc-sr04\/\" class=\"ub-content-link__anchor\">Ultraschall Sensor HC-SR04 und kompatible Ultraschall-Module<\/a><span class=\"ub-status ub-status--ok\" title=\"Link status: OK\"><span class=\"ub-status__icon\" aria-hidden=\"true\">\u25cf<\/span><span class=\"screen-reader-text\">Link status: OK<\/span><\/span><\/span><\/blockquote><iframe loading=\"lazy\" title=\"\u201eUltraschall Sensor HC-SR04 und kompatible Ultraschall-Module\u201c \u2014 Mikrocontroller-Elektronik.de\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"https:\/\/www.mikrocontroller-elektronik.de\/ultraschallsensor-hc-sr04\/embed\/#?secret=4E9d0wBXwa\" data-secret=\"4E9d0wBXwa\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>","protected":false},"excerpt":{"rendered":"<p>Ansteuerung des HC-SR04 Ultraschall-Entfernungsmessers mit Hilfe des Arduino UNO. Grundlagen Aufbau Schaltung (Ich habe nachtr\u00e4glich noch die Pins von 0\/1 auf 2\/3 ge\u00e4ndert, weil an 0\/1 noch der ISP h\u00e4ngt). Testprogramm Hier ein kleines Testprogramm. Es filtert zu kleine und zu gro\u00dfe Werte heraus und erm\u00f6glicht die Mittelwertbildung \u00fcber ein definiertes Intervall. Quellcode HCSR04Test.ino (GitHub &#8230;<\/p>\n<a href=\"https:\/\/www.fambach.net\/en\/us-015-ultraschall-entfernungsmesser\/\" class=\"read-more-link\">Carry on reading <span class=\"screen-reader-text\">\"US-015\"<\/span> <span class=\"meta-nav\">\u2192<\/span><\/a>","protected":false},"author":1,"featured_media":751,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[178,180,184,210],"tags":[94,22,28,7],"class_list":["post-743","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino-projekte","category-ardunio-uno","category-c-c","category-ultraschallsensoren","tag-arduino-projekte","tag-ardunio-uno","tag-c-c","tag-ultraschallsensoren","penguin-post","penguin-post-not-sticky"],"modified_by":"sfambach","_links":{"self":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/comments?post=743"}],"version-history":[{"count":16,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/743\/revisions"}],"predecessor-version":[{"id":19037,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/posts\/743\/revisions\/19037"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/media\/751"}],"wp:attachment":[{"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/media?parent=743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/categories?post=743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fambach.net\/en\/wp-json\/wp\/v2\/tags?post=743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}