{"id":399505,"date":"2026-01-10T16:12:08","date_gmt":"2026-01-10T16:12:08","guid":{"rendered":"https:\/\/www.newsbeep.com\/us\/399505\/"},"modified":"2026-01-10T16:12:08","modified_gmt":"2026-01-10T16:12:08","slug":"seeing-sound-with-a-laser","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us\/399505\/","title":{"rendered":"Seeing Sound With A Laser"},"content":{"rendered":"<p>You can hear sound, of course, but what if you could see it with a laser? That\u2019s what [Goosetopherson] thought about, and thus <a href=\"https:\/\/www.instructables.com\/Tone-Visualizer-Seeing-Sound-With-a-Laser\" target=\"_blank\" rel=\"nofollow noopener\">a new project<\/a> that you can see in the video below was born.<\/p>\n<p>The heart of the project is an I2S chip and an ESP32. Sound energy deforms a plastic film that causes a mirror to move. The moving mirror alters the course of the laser\u2019s beam.<\/p>\n<p>An important part of the project is the 3D printed enclosure designed in Fusion. Some wires are routed through during printing, and there are heat-set inserts.<\/p>\n<p>If you haven\u2019t run into it before, you can think of <a href=\"https:\/\/hackaday.com\/2019\/04\/18\/all-you-need-to-know-about-i2s\/\" rel=\"nofollow noopener\" target=\"_blank\">I2S as I2C for stereo audio<\/a>. It uses a synchronous protocol to push audio data using three wires. The board in question takes the digital data and decodes it to drive the speaker.<\/p>\n<p>This is a simple project that would lend itself to lots of substitutions if you decide to replicate it. In fact, we\u2019ve seen <a href=\"https:\/\/hackaday.com\/2024\/11\/13\/laser-sound-visualizations-are-not-hard-to-make\/\" rel=\"nofollow noopener\" target=\"_blank\">a version of this<\/a> that is nothing more than a Bluetooth speaker, some plastic film, a mirror, and a laser.<\/p>\n<\/p>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"You can hear sound, of course, but what if you could see it with a laser? That\u2019s what&hellip;\n","protected":false},"author":2,"featured_media":399506,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[199,79],"class_list":{"0":"post-399505","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physics","8":"tag-physics","9":"tag-science"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/399505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=399505"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/399505\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/399506"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=399505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=399505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=399505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}