{"id":384,"date":"2026-02-06T14:43:15","date_gmt":"2026-02-06T06:43:15","guid":{"rendered":"https:\/\/ctrhuby.com\/?p=384"},"modified":"2026-02-09T22:22:14","modified_gmt":"2026-02-09T14:22:14","slug":"esp32-tutorials-101-connectting-you-esp32","status":"publish","type":"post","link":"https:\/\/ctrhuby.com\/?p=384","title":{"rendered":"Tutorial 01: Hello World ESP32C3"},"content":{"rendered":"\n\n\n<h2 class=\"wp-block-heading\">What you need to follow this tutorial<\/h2>\n\n\n\n<p>To follow today&#8217;s tutorial, you will need:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A USB Cable<\/li>\n\n\n\n<li>A ESP32 Board<\/li>\n\n\n\n<li>A computer with internet connected <\/li>\n\n\n\n<li>An Arduino IDE in your computer<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Get your Arduino IDE ready<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Install your Arduino<\/h3>\n\n\n\n<p>visiting <a href=\"https:\/\/www.arduino.cc\/en\/software\/\">https:\/\/www.arduino.cc\/en\/software\/<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1711\" height=\"908\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/img_v3_02um_5fe817ea-15ee-463d-876e-c134c13a8e6g.webp\" alt=\"esp32 tutorial\" class=\"wp-image-411\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Allow esp32 Board in Arduino<\/h3>\n\n\n\n<p>Arduino IDE does not support esp32 boards automatically, to use esp32 boards in Arduino, we need to run some settings first.<\/p>\n\n\n\n<p>Selctct: <strong>Tools&#8212;Board&#8212;Boards Manager<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1726\" height=\"956\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/4d83dbf9-4227-42ea-b014-2e27e5643631.webp\" alt=\"\" class=\"wp-image-421\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1914\" height=\"1043\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/ScreenShot_2026-02-09_142410_000.webp\" alt=\"\" class=\"wp-image-424\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Select Board and Port<\/h3>\n\n\n\n<p>After connecting your ESP32C3 board with your computer, select your board and your port. <\/p>\n\n\n\n<p>In this guide, we\u2019re using the <strong>ESP32C3<\/strong>, so select <strong>&#8216;ESP32C3 Dev Module&#8217;<\/strong> from the board menu. If you see multiple ports and aren&#8217;t sure which one to use, here&#8217;s a quick trick: unplug your ESP32C3 and see which port disappears. That\u2019s your target! Reconnect the board and select that port to proceed.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1919\" height=\"1080\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/d70e444a-a1c5-4c50-87b6-026750a6656c.webp\" alt=\"\" class=\"wp-image-430\"\/><\/figure>\n\n\n\n<p>&#8220;If everything is set up correctly, you should see your <strong>board model<\/strong> and <strong>port number<\/strong> displayed in the <strong>bottom-right corner<\/strong> of the Arduino IDE.&#8221;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1915\" height=\"1115\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/7afe7130-571f-4b79-9fe4-92ff4fa6bfe5.webp\" alt=\"\" class=\"wp-image-431\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Write your first line of codes<\/h3>\n\n\n\n<p>Press <strong>Ctrl + N<\/strong> to start a new sketch. Then, open the <strong>Serial Monitor<\/strong> and check your <strong>baud rate<\/strong> settings.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1265\" height=\"794\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/1197fb66-9828-4636-9ff7-92fea4011254.webp\" alt=\"\" class=\"wp-image-432\"\/><\/figure>\n\n\n\n<p>Copy the codes below into you sketch, replace the 9600 with the baud rate of your Arduino.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>void setup() {\n  \/\/ put your setup code here, to run once:\n  Serial.begin(9600);\n}\n\nvoid loop() {\n  \/\/ put your main code here, to run repeatedly:\n  Serial.println(\"Hello Word\");\n  delay(1000);\n}<\/code><\/pre>\n\n\n\n<p>The code snippet consists of two main functions: setup() and loop(). The void keyword at the beginning indicates that these functions do not return any values to the system.<\/p>\n\n\n\n<p>The <code>setup()<\/code> function runs only once\u2014whenever the board is powered on or reset. In contrast, the <code>loop()<\/code> function executes continuously, running over and over again until the power is disconnected or a critical error occurs.<\/p>\n\n\n\n<p><strong>Serial.begin(baud_rate) <\/strong>initializes the communication speed. If the baud rate doesn&#8217;t match, your Serial Monitor will likely display &#8216;tofu&#8217; (gibberish characters) instead of readable text.<\/p>\n\n\n\n<p><strong>Serial.println(&#8220;your words&#8221;)<\/strong> outputs your message to the Serial Monitor. Meanwhile, <strong>Delay(1000)<\/strong> pauses the program for 1,000 milliseconds (exactly 1 second). Once the delay is over, the <strong>loop()<\/strong> function continues, executing the code blocks over and over again.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hello World<\/h3>\n\n\n\n<p>Now, we have finish our codes. Before ESP32C3 can run our program, we need to compile our codes and upload our codes to our board.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1402\" height=\"856\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/esp32compile.png\" alt=\"\" class=\"wp-image-455\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1397\" height=\"883\" src=\"https:\/\/ctrhuby.com\/wp-content\/uploads\/2026\/02\/esp32printout.png\" alt=\"\" class=\"wp-image-454\"\/><\/figure>\n\n\n\n<p>Perfect, you have run your first ESP32C3 project!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What you need to follow this tutorial To follow today&#8217;s tutorial, you will need: Get your Arduino IDE ready Install your Arduino visiting https:\/\/www.arduino.cc\/en\/software\/ Allow esp32 Board in Arduino Arduino IDE does not support esp32 boards automatically, to use esp32 boards in Arduino, we need to run some settings first. Selctct: Tools&#8212;Board&#8212;Boards Manager Select Board [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":456,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[31,29,30],"class_list":["post-384","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-esp32-tutorial-beginner","tag-arduino","tag-esp32","tag-tutorial"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tutorial 01: Hello World ESP32C3 - CTR HUBY<\/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:\/\/ctrhuby.com\/?p=384\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tutorial 01: Hello World ESP32C3 - CTR HUBY\" \/>\n<meta property=\"og:description\" content=\"What you need to follow this tutorial To follow today&#8217;s tutorial, you will need: Get your Arduino IDE ready Install your Arduino visiting https:\/\/www.arduino.cc\/en\/software\/ Allow esp32 Board in Arduino Arduino IDE does not support esp32 boards automatically, to use esp32 boards in Arduino, we need to run some settings first. 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