{"id":81,"date":"2026-02-26T16:39:06","date_gmt":"2026-02-26T15:39:06","guid":{"rendered":"https:\/\/elrebo.de\/?p=81"},"modified":"2026-02-26T16:39:08","modified_gmt":"2026-02-26T15:39:08","slug":"hcsr04_sensor","status":"publish","type":"post","link":"https:\/\/www.elrebo.de\/index.php\/2026\/02\/26\/hcsr04_sensor\/","title":{"rendered":"hcsr04_sensor"},"content":{"rendered":"\n

An ESP-IDF component for Physical Computing<\/a><\/p>\n\n\n\n

Purpose<\/h2>\n\n\n\n

Distance measurement with an HCSR04 sensor for ESP32 systems.<\/p>\n\n\n\n

How it is done<\/h2>\n\n\n\n

Distance measurement is implemented as a simple C++ class Hcsr04Sensor<\/code>.<\/p>\n\n\n\n

It has one public method GetDistance<\/code>, which returns the measured distance as a float.<\/p>\n\n\n\n

Where to find it<\/h2>\n\n\n\n

hcsr04_sensor<\/code> is published on the ESP Registry at https:\/\/components.espressif.com\/components\/elrebo-de\/hcsr04_sensor<\/a>.<\/p>\n\n\n\n

The source code can be found at https:\/\/github.com\/elrebo-de\/hcsr04_sensor<\/a>.<\/p>\n\n\n\n

How to use it<\/h2>\n\n\n\n

As an ESP-IDF component hcsr04_sensor must be included into idf_component.yml as a dependency. As usual this can be done by executing this command:<\/p>\n\n\n\n

idf.py add-dependency \"elrebo-de\/hcsr04_sensor^1.0.6\"<\/code><\/p>\n\n\n\n

In CMakeLists.txt \"elrebo-de__hcsr04_sensor\"<\/code> has to be added as a requirement.<\/p>\n\n\n\n

Now you can include hcsr04_sensor.hpp<\/code> and use the Hcsr04Sensor class in your program.<\/p>\n","protected":false},"excerpt":{"rendered":"

An ESP-IDF component for Physical Computing Purpose Distance measurement with an HCSR04 sensor for ESP32 systems. How it is done Distance measurement is implemented as a simple C++ class Hcsr04Sensor. It has one public method GetDistance, which returns the measured distance as a float. Where to find it hcsr04_sensor is published on the ESP Registry […]<\/p>\n","protected":false},"author":2,"featured_media":134,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-81","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oss"],"_links":{"self":[{"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/posts\/81","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/comments?post=81"}],"version-history":[{"count":2,"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/posts\/81\/revisions"}],"predecessor-version":[{"id":135,"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/posts\/81\/revisions\/135"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/media\/134"}],"wp:attachment":[{"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/media?parent=81"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/categories?post=81"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.elrebo.de\/index.php\/wp-json\/wp\/v2\/tags?post=81"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}