{"id":20967,"date":"2024-04-04T16:39:47","date_gmt":"2024-04-04T20:39:47","guid":{"rendered":"https:\/\/reactivemusic.net\/?p=20967"},"modified":"2024-04-04T16:39:47","modified_gmt":"2024-04-04T20:39:47","slug":"detect-amplifier-keying-line-ptt-with-arduino","status":"publish","type":"post","link":"https:\/\/reactivemusic.net\/?p=20967","title":{"rendered":"Detect amplifier keying line (PTT) with Arduino"},"content":{"rendered":"<p>Use an Arduino to detect transmit\/receive state.<\/p>\n<p><iframe loading=\"lazy\" title=\"Detect amplifier keying line state with Arduino and Max\/MSP\" width=\"525\" height=\"295\" src=\"https:\/\/www.youtube.com\/embed\/stqwH6b245k?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><span class=\"yt-core-attributed-string yt-core-attributed-string--white-space-pre-wrap\" role=\"text\"><span class=\"yt-core-attributed-string--link-inherit-color\">Using an Arduino Uno to detect the transmit state of a radio. The amplifier keying line (PTT) is grounded on transmit. The Arduino sees it as a switch being pulled low. The keying line is connected to digital input 2 (D2) and ground. The digital input uses the builtin pullup resistor. The sketch is the Arduino digital | input pullup example. Max polls the serial data from the Arduino and displays the state of the keying line.<\/span><\/span><\/p>\n<div id=\"snippet\" class=\"style-scope ytd-text-inline-expander\"><\/div>\n<div class=\"style-scope ytd-watch-metadata\">\n<div id=\"items\" class=\"style-scope ytd-structured-description-content-renderer\">\n<h3 id=\"header\" class=\"style-scope ytd-video-description-transcript-section-renderer\">Files<\/h3>\n<p>arduino-ptt-detect2.maxpat &#8211; reads serial data from Arduino and converts to on\/off state. The patch is nearly identical to the Arduino serial read example in the max-projects github.<\/p>\n<p>ampkey2test2.ino &#8211; this sketch is almost identical to the Arduino Example | digital | input pullup &#8211; sketch. Except the baud rate is set to 38400.<\/p>\n<p>Note: files are not yet available. Local files in max teaching examples.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Use an Arduino to detect transmit\/receive state. Using an Arduino Uno to detect the transmit state of a radio. The amplifier keying line (PTT) is grounded on transmit. The Arduino sees it as a switch being pulled low. The keying line is connected to digital input 2 (D2) and ground. The digital input uses the &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/reactivemusic.net\/?p=20967\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Detect amplifier keying line (PTT) with Arduino&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[28,332],"tags":[20,55,345,26,243],"class_list":["post-20967","post","type-post","status-publish","format-standard","hentry","category-maxmsp","category-radio-2","tag-arduino","tag-electronics","tag-maxmsp","tag-sensors","tag-software-defined-radio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Detect amplifier keying line (PTT) with Arduino - reactive music<\/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:\/\/reactivemusic.net\/?p=20967\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Detect amplifier keying line (PTT) with Arduino - reactive music\" \/>\n<meta property=\"og:description\" content=\"Use an Arduino to detect transmit\/receive state. Using an Arduino Uno to detect the transmit state of a radio. The amplifier keying line (PTT) is grounded on transmit. The Arduino sees it as a switch being pulled low. The keying line is connected to digital input 2 (D2) and ground. 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Using an Arduino Uno to detect the transmit state of a radio. The amplifier keying line (PTT) is grounded on transmit. The Arduino sees it as a switch being pulled low. The keying line is connected to digital input 2 (D2) and ground. 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