{"id":5671,"date":"2013-09-02T13:07:40","date_gmt":"2013-09-02T13:07:40","guid":{"rendered":"http:\/\/178.62.14.192\/?p=5671"},"modified":"2013-09-02T13:07:40","modified_gmt":"2013-09-02T13:07:40","slug":"cheap-as-chips-ultrasonic-sr04-distance-sensor-raspberrypi-compatible","status":"publish","type":"post","link":"https:\/\/www.recantha.co.uk\/blog\/?p=5671","title":{"rendered":"Cheap-as-chips ultrasonic SR04 distance sensor &#8211; #RaspberryPi compatible"},"content":{"rendered":"<p style=\"text-align: center;\"><a href=\"http:\/\/hobbycomponents.com\/index.php\/modu\/modu-sens\/ultrasonic-module-hc-sr04-distance-sensor.html\"><img data-recalc-dims=\"1\" decoding=\"async\" alt=\"Ultrasonic Module HC-SR04 Distance Sensor\" src=\"https:\/\/i0.wp.com\/178.62.14.192\/wp-content\/uploads\/2013\/09\/hcardu0047_800.jpg?w=560\" \/><\/a><\/p>\n<p>I&#8217;ve just been browsing a little (waiting for the coffee to kick in!) and come across some SR04 distance sensor modules at Hobby Components. These are ridiculously cheap at \u00a31.75 (inc VAT) and are very close in price to those available from China. I use one of these in my Picorder and several other people have had success using them. It doesn&#8217;t take much programming and the sensor sends a digital signal (so no mucking about with analog-to-digital converters).<\/p>\n<p>These are great fun if you need to measure distance or be alerted on proximity. The sensor does its stuff by sending out ultrasonic pulses (like sonar) and then reading how long it takes for the &#8216;pings&#8217; to come back.<\/p>\n<p><a href=\"http:\/\/hobbycomponents.com\/index.php\/modu\/modu-sens\/ultrasonic-module-hc-sr04-distance-sensor.html\">Shop online with Hobby Components.<\/a><\/p>\n<p><em>I don&#8217;t have any affiliation or agreement with Hobby Components, I&#8217;m just passing on deals when I find them, whoever I find them with.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve just been browsing a little (waiting for the coffee to kick in!) and come across some SR04 distance sensor modules at Hobby Components. These are ridiculously cheap at \u00a31.75 (inc VAT) and are very close in price to those&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=5671\">Read more &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[37,47],"tags":[],"class_list":["post-5671","post","type-post","status-publish","format-standard","hentry","category-picorder","category-rpi-shopping"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Cheap-as-chips ultrasonic SR04 distance sensor - #RaspberryPi compatible - Raspberry Pi Pod<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.recantha.co.uk\/blog\/?p=5671\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cheap-as-chips ultrasonic SR04 distance sensor - #RaspberryPi compatible - Raspberry Pi Pod\" \/>\n<meta property=\"og:description\" content=\"I&#8217;ve just been browsing a little (waiting for the coffee to kick in!) and come across some SR04 distance sensor modules at Hobby Components. These are ridiculously cheap at \u00a31.75 (inc VAT) and are very close in price to those&hellip;Read more &rarr;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.recantha.co.uk\/blog\/?p=5671\" \/>\n<meta property=\"og:site_name\" content=\"Raspberry Pi Pod\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/recantha\/\" \/>\n<meta property=\"article:published_time\" content=\"2013-09-02T13:07:40+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/178.62.14.192\/wp-content\/uploads\/2013\/09\/hcardu0047_800.jpg\" \/>\n<meta name=\"author\" content=\"Michael Horne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@recantha\" \/>\n<meta name=\"twitter:site\" content=\"@recantha\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Michael Horne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=5671#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/?p=5671\"},\"author\":{\"name\":\"Michael Horne\",\"@id\":\"https:\/\/www.recantha.co.uk\/blog\/#\/schema\/person\/c27c4ef2ee1c18b130f1fcd5dcdbb263\"},\"headline\":\"Cheap-as-chips ultrasonic SR04 distance sensor &#8211; 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Ultrasonic sensor","author":"Michael Horne","date":"6 February 2013","format":false,"excerpt":"Raspberry Pi - Ultrasonic sensor - YouTube. Great tutorial on how to get the SR04 Ultrasonic distance sensor up-and-running on the Pi. This is what I'm using on the PiPodCorder and the tutorial uses some of the same code and identical wiring.","rel":"","context":"In &quot;Making&quot;","block_context":{"text":"Making","link":"https:\/\/www.recantha.co.uk\/blog\/?cat=50"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":369,"url":"https:\/\/www.recantha.co.uk\/blog\/?p=369","url_meta":{"origin":5671,"position":1},"title":"Redwing Pi scripts released","author":"Michael Horne","date":"29 October 2012","format":false,"excerpt":"Following the Milton Keynes Raspberry Jam, and the fair amount of success running the PiPodCorder with a working temperature sensor and LCD read-out, I've decided to put the code onto GitHub in the hope that somewhere someone will find them useful! 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