{"id":1877,"date":"2025-06-24T11:20:32","date_gmt":"2025-06-24T11:20:32","guid":{"rendered":"https:\/\/learnbydoing.dev\/?p=1877"},"modified":"2026-01-22T08:12:50","modified_gmt":"2026-01-22T08:12:50","slug":"how-to-use-a-button-with-arduino","status":"publish","type":"post","link":"https:\/\/learnbydoing.dev\/how-to-use-a-button-with-arduino\/","title":{"rendered":"How to use a button with Arduino"},"content":{"rendered":"
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  • \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
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    In this tutorial, we will explain how to use a push button with an Arduino board. We will walk through the correct wiring, <\/span>provide<\/span> a simple code example, and explain each step to help you understand how to detect button presses.<\/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

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    \u00a0\ud83d\udcdd Required components<\/span><\/span><\/h3>

    • 1 x <\/span><\/span>Arduino Uno<\/span><\/span><\/strong> (or compatible board)<\/span><\/span><\/p><\/li>

    • Push button<\/span><\/span><\/strong><\/li>
    • 10k\u03a9 resistor<\/span><\/span><\/strong><\/li>

    • Jumper wires<\/strong><\/p><\/li>

    • Breadboard<\/span><\/span>\u00a0<\/span><\/strong><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      Step 1: Wiring the Electronics<\/span><\/b>\u00a0<\/span><\/h3>

      The button has four legs (two pairs connected internally). We only need to use two pins, one on each side. Connect one button pin to digital pin 7 on the Arduino and the one below it to GND via a 10k\u03a9 pull-down resistor. So now connect the bottom right pin directly to 5V. This ensures that the input pin reads LOW when the button is not pressed and HIGH when it is pressed.<\/span>\u00a0<\/span><\/p>

      Basic wiring:<\/span>\u00a0<\/span><\/p>

      • Button pin 1 \u2192 Arduino digital pin 7<\/span><\/li>
      • Button pin 2 \u2192 GND via 10k\u03a9 resistor<\/span><\/li>
      • Button pin 4 \u2192 5V directly<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        \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
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        \ud83d\udda5\ufe0f\u200bStep 2: Writing the Code<\/span><\/b>\u00a0<\/span><\/h2>

        Below is a simple sketch that reads the button state and turns on the built-in LED when the button is pressed:<\/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

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        \ud83d\udce6 Complete Arduino code<\/span><\/span><\/h3>

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

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        \n\t\t\t\t\n\t\t\t\t\tconst int buttonPin = 7;     \/\/ Pin connected to the button \r\nconst int ledPin = 13;       \/\/ Built-in LED pin \r\n \r\nint buttonState = 0;         \/\/ Variable to hold the button state \r\n \r\nvoid setup() { \r\n  pinMode(buttonPin, INPUT); \/\/ Set the button pin as input \r\n  pinMode(ledPin, OUTPUT);   \/\/ Set the LED pin as output \r\n} \r\n \r\nvoid loop() { \r\n  buttonState = digitalRead(buttonPin); \/\/ Read the state of the button \r\n \r\n  if (buttonState == HIGH) { \r\n    digitalWrite(ledPin, HIGH); \/\/ Turn on LED if button is pressed \r\n  } else { \r\n    digitalWrite(ledPin, LOW);  \/\/ Turn off LED otherwise \r\n  } \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>const int buttonPin = 7;<\/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\"><span class=\"TextRun SCXW56802661 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW56802661 BCX0\">Defines the pin connected to the button.<\/span><\/span><span class=\"EOP SCXW56802661 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-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>const int ledPin = 13;<\/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\"><span class=\"TextRun SCXW7700825 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW7700825 BCX0\">Uses the built-in LED on most Arduino boards.<\/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-d361b1c elementor-widget elementor-widget-code-highlight\" data-id=\"d361b1c\" 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-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\"><span class=\"TextRun SCXW186641380 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW186641380 BCX0\">Sets up the pin modes for input and 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-85beade elementor-widget elementor-widget-code-highlight\" data-id=\"85beade\" 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-8c151f2 elementor-widget elementor-widget-text-editor\" data-id=\"8c151f2\" 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><span class=\"TextRun SCXW166058637 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW166058637 BCX0\">Reads the current state of the button (HIGH if pressed, LOW otherwise).<\/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-b11d22b elementor-widget elementor-widget-code-highlight\" data-id=\"b11d22b\" 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-d4803c2 elementor-widget elementor-widget-text-editor\" data-id=\"d4803c2\" 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><span class=\"TextRun SCXW154736565 BCX0\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW154736565 BCX0\">Turns the LED on or off based on the button state.<\/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-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\ufe0f\u200bStep 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><p><strong>The LED never turns on<\/strong><\/p><ul><li><span data-contrast=\"auto\">Check the wiring of the button and make sure you&#8217;re using a pull-down resistor.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li><li><span data-contrast=\"auto\">Make sure the correct digital pin number is used in the code.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li><\/ul><p>\u00a0<\/p><p><strong>The LED stays on constantly<\/strong><\/p><ul><li><span data-contrast=\"auto\">The button might be wired incorrectly, or creating a short to 5V.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li><li><span data-contrast=\"auto\">The input pin might be floating if the resistor is missing.<\/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 explain how to use a push button with an Arduino board. We will walk through the correct wiring, provide a simple code example, and explain each step to help you understand how to detect button presses.\u00a0 \u00a0\ud83d\udcdd Required components 1 x Arduino Uno (or compatible board) Push button 10k\u03a9 resistor [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":2062,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[68,69,43],"tags":[95,94,59,156,84,67,83,87,82,66,159,158,93,92,64],"class_list":["post-1877","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-arduino","category-electronics","category-tutorials","tag-adc","tag-analog","tag-arduino","tag-button","tag-c","tag-complete","tag-cpp","tag-guide","tag-ide","tag-learn-by-doing","tag-pulldown","tag-pullup","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 use a button 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-use-a-button-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 explain how to use a push button with an Arduino board. 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