{"id":2142,"date":"2025-06-30T16:01:31","date_gmt":"2025-06-30T16:01:31","guid":{"rendered":"https:\/\/learnbydoing.dev\/?p=2142"},"modified":"2026-01-10T22:36:19","modified_gmt":"2026-01-10T22:36:19","slug":"how-to-turn-on-a-spdt-relay-with-arduino","status":"publish","type":"post","link":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/","title":{"rendered":"How to turn on a SPDT RELAY with arduino"},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
    \n\t\t\t\t\t\t\t\t
  • \n\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\tArduino<\/span>, Electronics<\/span>, Tutoriales<\/span>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
    \n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t
    \n\t\t\t
    \n\t\t\t<\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
    \n\t\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    In this tutorial, we will learn how to control an SPDT relay module with an Arduino Uno using a push button as a toggle switch. Each press of the button will change the state of the relay: if the coil is off, it will turn on and stay on until the button is pressed again to turn it off.<\/span><\/span>\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

    \n\t\t\t\t
    \n\t\t\t\t\t\t\t\t\t

    \u00a0\ud83d\udcdd Required components<\/span><\/span><\/h3>
    • 1 x <\/span><\/span>Arduino Uno<\/span><\/span> (or compatible board)<\/span><\/span><\/li>
    • Push button<\/span><\/span><\/li>
    • LED\/Lamp (any color)<\/span><\/span><\/li>
    • 220\u03a9 resistor (for the LED)<\/span><\/span><\/li>
    • Power Supply<\/li>
    • Breadboard<\/span><\/span>\u00a0<\/span><\/li>
    • Jumper wires<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t

      Step 1: Wiring the Electronics<\/span><\/b>\u00a0<\/span><\/h3>

      1. Connect VCC of the relay module to Arduino 5V.<\/span><\/span>\u00a0<\/span>
      <\/span>2. Connect GND of the relay module to Arduino GND.<\/span><\/span>\u00a0<\/span>
      <\/span>3. Connect the IN pin of the relay module to Arduino digital pin 8.<\/span><\/span>\u00a0<\/span>
      <\/span>4. Connect one leg of the push button to Arduino digital pin 7.<\/span><\/span>\u00a0<\/span>
      <\/span>5. Connect the other leg of the button to GND.<\/span><\/span>\u00a0<\/span>
      <\/span>6. Also connect that same leg of the button directly to 5V.<\/span><\/span>\u00a0<\/span>
      <\/span>\u00a0<\/span>
      <\/span>When the button is pressed, pin 7 reads HIGH; when released, it reads LOW.<\/span><\/span>\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

      \n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
      \n\t\t\t\t
      \n\t\t\t\t\t\t\t\t\t

      \ud83d\udda5\ufe0fStep 2: Writing the Code<\/span><\/h3>

      This is the complete code to use the button with Arduino:<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

      \n\t\t\t\t
      \n\t\t\t\t\t\t\t
      \n\t\t\t
      \n\t\t\t\t\n\t\t\t\t\tconst int buttonPin = 7;      \/\/ Pin connected to the button \r\nconst int ledPin = 8;        \/\/ Pin connected to the LED \r\n \r\nint buttonState = 0;          \/\/ Variable to store button state \r\n \r\nvoid setup() { \r\n  pinMode(buttonPin, INPUT);  \/\/ Set button pin as input \r\n  pinMode(rlay, OUTPUT);    \/\/ Set LED pin as output \r\n} \r\n \r\nvoid loop() { \r\n  buttonState = digitalRead(buttonPin); \r\n \r\n  if (buttonState == HIGH) { \r\n    digitalWrite(relay, HIGH); \/\/ Turn LED on \r\n  } else { \r\n    digitalWrite(relay, LOW);  \/\/ Turn LED off \r\n  } \r\n} <\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a888ec elementor-widget elementor-widget-text-editor\" data-id=\"7a888ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><b>\ud83d\udd0e\u00a0<\/b><b>Breaking down the Code<\/b><\/h3><p>Let\u2019s review the code section by section:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-01f8801 elementor-widget elementor-widget-code-highlight\" data-id=\"01f8801\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-tomorrow copy-to-clipboard\">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-cpp line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-cpp\">\n\t\t\t\t\t<xmp>buttonPin<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16783b7 elementor-widget elementor-widget-text-editor\" data-id=\"16783b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1857\" data-end=\"1885\">\u00a0I<span class=\"TextRun SCXW178997497 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW178997497 BCX0\">s used to detect the button press.<\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7242351 elementor-widget elementor-widget-code-highlight\" data-id=\"7242351\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-tomorrow copy-to-clipboard\">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-cpp line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-cpp\">\n\t\t\t\t\t<xmp>ledPin<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0887672 elementor-widget elementor-widget-text-editor\" data-id=\"0887672\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1857\" data-end=\"1885\">\u00a0C<span class=\"TextRun SCXW220550607 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW220550607 BCX0\">ontrols the LED.<\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-988ae1f elementor-widget elementor-widget-code-highlight\" data-id=\"988ae1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-tomorrow copy-to-clipboard\">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-cpp line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-cpp\">\n\t\t\t\t\t<xmp>pinMode()<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-455a2f8 elementor-widget elementor-widget-text-editor\" data-id=\"455a2f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1857\" data-end=\"1885\">\u00a0S<span class=\"TextRun SCXW19431217 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW19431217 BCX0\">ets up the pins as input or output.<\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6503883 elementor-widget elementor-widget-code-highlight\" data-id=\"6503883\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-tomorrow copy-to-clipboard\">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-cpp line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-cpp\">\n\t\t\t\t\t<xmp>digitalRead()<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b51cf90 elementor-widget elementor-widget-text-editor\" data-id=\"b51cf90\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"3514\" data-end=\"3644\">\u00a0C<span class=\"TextRun SCXW186641380 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW186641380 BCX0\"><span class=\"TextRun SCXW46389094 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW46389094 BCX0\">hecks if the button is pressed.<\/span><\/span><\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-52f7e5d elementor-widget elementor-widget-code-highlight\" data-id=\"52f7e5d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"code-highlight.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"prismjs-tomorrow copy-to-clipboard\">\n\t\t\t<pre data-line=\"\" class=\"highlight-height language-cpp line-numbers\">\n\t\t\t\t<code readonly=\"true\" class=\"language-cpp\">\n\t\t\t\t\t<xmp>digitalWrite()<\/xmp>\n\t\t\t\t<\/code>\n\t\t\t<\/pre>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2547d99 elementor-widget elementor-widget-text-editor\" data-id=\"2547d99\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"0\" data-end=\"69\">T<span class=\"TextRun SCXW259034391 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW259034391 BCX0\">urns the LED on or off based on the button&#8217;s state.<\/span><\/span><span class=\"EOP SCXW259034391 BCX0\" data-ccp-props=\"{}\">\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c92ae44 elementor-widget elementor-widget-text-editor\" data-id=\"c92ae44\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><b style=\"color: inherit; font-family: inherit; font-size: 2rem; text-wrap-mode: initial;\"><span data-contrast=\"none\">\ud83d\udee0\ufe0fStep 3: Troubleshooting<\/span><\/b><span style=\"color: inherit; font-family: inherit; font-size: 2rem; text-wrap-mode: initial;\" data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3><p><strong>\u00a0<\/strong><\/p><h3><strong>Relay does not change state:<\/strong><\/h3><ul><li><p><span data-contrast=\"auto\">Check that the relay module VCC and GND are properly connected.<\/span><\/p><\/li><li><span data-contrast=\"auto\">Ensure a stable 12V supply and common ground.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>In this tutorial, we will learn how to control an SPDT relay module with an Arduino Uno using a push button as a toggle switch. Each press of the button will change the state of the relay: if the coil is off, it will turn on and stay on until the button is pressed again [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":2148,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[68,69,43],"tags":[153,95,94,59,84,67,109,83,154,87,82,155,66,152,93,92,64],"class_list":["post-2142","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino","category-electronics","category-tutorials","tag-ac","tag-adc","tag-analog","tag-arduino","tag-c","tag-complete","tag-control","tag-cpp","tag-dc","tag-guide","tag-ide","tag-insulated","tag-learn-by-doing","tag-relay","tag-resistance","tag-resistor","tag-tutorial"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to turn on a SPDT RELAY with arduino - Learn by Doing!<\/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:\/\/learnbydoing.dev\/es\/how-to-turn-on-a-spdt-relay-with-arduino\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Installing ROS 2 Jazzy on Ubuntu 24.04: Step-by-Step Tutorial\" \/>\n<meta property=\"og:description\" content=\"In this tutorial, we will learn how to control an SPDT relay module with an Arduino Uno using a push button as a toggle switch. Each press of the button will change the state of the relay: if the coil is off, it will turn on and stay on until the button is pressed again [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/learnbydoing.dev\/es\/how-to-turn-on-a-spdt-relay-with-arduino\/\" \/>\n<meta property=\"og:site_name\" content=\"Learn by Doing!\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-30T16:01:31+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-10T22:36:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Progetto-senza-titolo-14.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/\"},\"author\":{\"name\":\"\",\"@id\":\"\"},\"headline\":\"How to turn on a SPDT RELAY with arduino\",\"datePublished\":\"2025-06-30T16:01:31+00:00\",\"dateModified\":\"2026-01-10T22:36:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/\"},\"wordCount\":258,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/learnbydoing.dev\/es\/#organization\"},\"image\":{\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp\",\"keywords\":[\"AC\",\"adc\",\"analog\",\"Arduino\",\"c++\",\"complete\",\"control\",\"cpp\",\"DC\",\"Guide\",\"ide\",\"insulated\",\"learn by doing\",\"relay\",\"resistance\",\"resistor\",\"tutorial\"],\"articleSection\":[\"Arduino\",\"Electronics\",\"Tutorials\"],\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/\",\"url\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/\",\"name\":\"How to turn on a SPDT RELAY with arduino - Learn by Doing!\",\"isPartOf\":{\"@id\":\"https:\/\/learnbydoing.dev\/es\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp\",\"datePublished\":\"2025-06-30T16:01:31+00:00\",\"dateModified\":\"2026-01-10T22:36:19+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage\",\"url\":\"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp\",\"contentUrl\":\"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp\",\"width\":1920,\"height\":1080},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/learnbydoing.dev\/es\/learn-by-doing-es\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to turn on a SPDT RELAY with arduino\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/learnbydoing.dev\/es\/#website\",\"url\":\"https:\/\/learnbydoing.dev\/es\/\",\"name\":\"Learn by Doing!\",\"description\":\"Learn Robotics the fun way\",\"publisher\":{\"@id\":\"https:\/\/learnbydoing.dev\/es\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/learnbydoing.dev\/es\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/learnbydoing.dev\/es\/#organization\",\"name\":\"Learn by Doing!\",\"url\":\"https:\/\/learnbydoing.dev\/es\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\/\/learnbydoing.dev\/es\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/cropped-cropped-cropped-Progetto-senza-titolo-6-1.png\",\"contentUrl\":\"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/cropped-cropped-cropped-Progetto-senza-titolo-6-1.png\",\"width\":512,\"height\":512,\"caption\":\"Learn by Doing!\"},\"image\":{\"@id\":\"https:\/\/learnbydoing.dev\/es\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.linkedin.com\/in\/antonio-brandi-512166bb\/\"]},{\"@type\":\"Person\",\"@id\":\"\",\"url\":\"https:\/\/learnbydoing.dev\/es\/author\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to turn on a SPDT RELAY with arduino - Learn by Doing!","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/learnbydoing.dev\/es\/how-to-turn-on-a-spdt-relay-with-arduino\/","og_locale":"es_ES","og_type":"article","og_title":"Installing ROS 2 Jazzy on Ubuntu 24.04: Step-by-Step Tutorial","og_description":"In this tutorial, we will learn how to control an SPDT relay module with an Arduino Uno using a push button as a toggle switch. Each press of the button will change the state of the relay: if the coil is off, it will turn on and stay on until the button is pressed again [&hellip;]","og_url":"https:\/\/learnbydoing.dev\/es\/how-to-turn-on-a-spdt-relay-with-arduino\/","og_site_name":"Learn by Doing!","article_published_time":"2025-06-30T16:01:31+00:00","article_modified_time":"2026-01-10T22:36:19+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Progetto-senza-titolo-14.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"","Tiempo de lectura":"3 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#article","isPartOf":{"@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/"},"author":{"name":"","@id":""},"headline":"How to turn on a SPDT RELAY with arduino","datePublished":"2025-06-30T16:01:31+00:00","dateModified":"2026-01-10T22:36:19+00:00","mainEntityOfPage":{"@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/"},"wordCount":258,"commentCount":0,"publisher":{"@id":"https:\/\/learnbydoing.dev\/es\/#organization"},"image":{"@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage"},"thumbnailUrl":"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp","keywords":["AC","adc","analog","Arduino","c++","complete","control","cpp","DC","Guide","ide","insulated","learn by doing","relay","resistance","resistor","tutorial"],"articleSection":["Arduino","Electronics","Tutorials"],"inLanguage":"es","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/","url":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/","name":"How to turn on a SPDT RELAY with arduino - Learn by Doing!","isPartOf":{"@id":"https:\/\/learnbydoing.dev\/es\/#website"},"primaryImageOfPage":{"@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage"},"image":{"@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage"},"thumbnailUrl":"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp","datePublished":"2025-06-30T16:01:31+00:00","dateModified":"2026-01-10T22:36:19+00:00","breadcrumb":{"@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#breadcrumb"},"inLanguage":"es","potentialAction":[{"@type":"ReadAction","target":["https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/"]}]},{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#primaryimage","url":"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp","contentUrl":"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/Relay-1-1.webp","width":1920,"height":1080},{"@type":"BreadcrumbList","@id":"https:\/\/learnbydoing.dev\/how-to-turn-on-a-spdt-relay-with-arduino\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/learnbydoing.dev\/es\/learn-by-doing-es\/"},{"@type":"ListItem","position":2,"name":"How to turn on a SPDT RELAY with arduino"}]},{"@type":"WebSite","@id":"https:\/\/learnbydoing.dev\/es\/#website","url":"https:\/\/learnbydoing.dev\/es\/","name":"Learn by Doing!","description":"Learn Robotics the fun way","publisher":{"@id":"https:\/\/learnbydoing.dev\/es\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/learnbydoing.dev\/es\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es"},{"@type":"Organization","@id":"https:\/\/learnbydoing.dev\/es\/#organization","name":"Learn by Doing!","url":"https:\/\/learnbydoing.dev\/es\/","logo":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/learnbydoing.dev\/es\/#\/schema\/logo\/image\/","url":"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/cropped-cropped-cropped-Progetto-senza-titolo-6-1.png","contentUrl":"https:\/\/learnbydoing.dev\/wp-content\/uploads\/2025\/06\/cropped-cropped-cropped-Progetto-senza-titolo-6-1.png","width":512,"height":512,"caption":"Learn by Doing!"},"image":{"@id":"https:\/\/learnbydoing.dev\/es\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/in\/antonio-brandi-512166bb\/"]},{"@type":"Person","@id":"","url":"https:\/\/learnbydoing.dev\/es\/author\/"}]}},"_links":{"self":[{"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/posts\/2142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/comments?post=2142"}],"version-history":[{"count":27,"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/posts\/2142\/revisions"}],"predecessor-version":[{"id":5598,"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/posts\/2142\/revisions\/5598"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/media\/2148"}],"wp:attachment":[{"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/media?parent=2142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/categories?post=2142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learnbydoing.dev\/es\/wp-json\/wp\/v2\/tags?post=2142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}