{"id":16814,"date":"2026-11-07T14:48:45","date_gmt":"2026-11-07T09:18:45","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=16814"},"modified":"2026-11-09T08:16:34","modified_gmt":"2026-11-09T02:46:34","slug":"how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\/","title":{"rendered":"How to upload an Easy BITX sketch by VU3GAO to the Raduino?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Uploading the Easy Bitx firmware by VU3GAO to a Raduino (Arduino Nano-based) board involves <strong>using the Arduino IDE to compile and flash the code via a USB cable<\/strong>. The Easy Bitx is a simplified transceiver utilizing an Si5351 VFO and a 10MHz IF.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2026\/11\/image-3-1024x576.png\" alt=\"\" class=\"wp-image-18490\" srcset=\"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2026\/11\/image-3-1024x576.png 1024w, https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2026\/11\/image-3-300x169.png 300w, https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2026\/11\/image-3-768x432.png 768w, https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2026\/11\/image-3.png 1306w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Prerequisites<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Arduino IDE:<\/strong> Installed on your computer.<\/li>\n\n\n\n<li><strong>USB Cable:<\/strong> Mini-B USB cable to connect the Raduino board.<\/li>\n\n\n\n<li><strong>Firmware:<\/strong> Download the VU3GAO Easy Bitx Firmware (typically file).<\/li>\n\n\n\n<li><strong>Libraries:<\/strong> Ensure the and libraries are installed in Arduino IDE.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Steps to Upload the Sketch<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Connect the Raduino:<\/strong> Connect the Raduino board (Arduino Nano) to your PC using the Mini-B USB cable. The board will receive power from the USB port.<\/li>\n\n\n\n<li><strong>Open the Sketch:<\/strong> Launch Arduino IDE, go to , and select the downloaded file (e.g., or ).<\/li>\n\n\n\n<li><strong>Configure Board &amp; Port:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Go to <strong>Tools &gt; Board<\/strong> and select <strong>&#8220;Arduino Nano&#8221;<\/strong>.<\/li>\n\n\n\n<li>Go to <strong>Tools &gt; Processor<\/strong> and select <strong>&#8220;ATmega328P&#8221;<\/strong> (or &#8220;ATmega328P (Old Bootloader)&#8221; if uploading fails).<\/li>\n\n\n\n<li>Go to <strong>Tools &gt; Port<\/strong> and select the COM port corresponding to your Nano.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Verify\/Compile:<\/strong> Click the <strong>Verify<\/strong> (check mark) button in the top left. Wait for &#8220;Done compiling&#8221; to ensure there are no errors.<\/li>\n\n\n\n<li><strong>Upload:<\/strong> Click the <strong>Upload<\/strong> (arrow pointing right) button. Wait until the IDE reports <strong>&#8220;Upload complete&#8221;<\/strong>.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Calibrating the Firmware (BFO Setup)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After uploading, you must set the Beat Frequency Oscillator (BFO) for your crystal filter:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Connect the Raduino, run the IDE, and open the <strong>Serial Monitor<\/strong> (set to 9600 baud).<\/li>\n\n\n\n<li>Power on the Raduino, and press and hold the tuning knob for 2 seconds to enter <strong>BFO Setup<\/strong> mode.<\/li>\n\n\n\n<li>Tune the BFO to align with your filter passband (typically 300Hz-3000Hz), using an audio spectrum analyzer if needed.<\/li>\n\n\n\n<li>Once the frequency is found, update the BFO value in the code if required and re-upload, or save the settings to the EEProm via the BFO aid. <\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Key Tips<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Power Supply:<\/strong> While the USB powers the board, ensure the main Easy Bitx board is powered separately during operations, though it can run off USB for testing.<\/li>\n\n\n\n<li><strong>BFO Value:<\/strong> The firmware allows for setting specific 10MHz IF BFO values.<\/li>\n\n\n\n<li><strong>Version:<\/strong> Ensure you are using the correct version of the sketch (e.g., v1.3 or v1.4 with Smeter). <\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uploading the Easy Bitx firmware by VU3GAO to a Raduino (Arduino Nano-based) board involves using the Arduino IDE to compile and flash the code via a USB cable. The Easy Bitx is a simplified transceiver utilizing an Si5351 VFO and a 10MHz IF. Prerequisites Steps to Upload the Sketch Calibrating the Firmware (BFO Setup) After [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":18468,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-16814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amateur-radio-ham-radio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to upload an Easy BITX sketch by VU3GAO to the Raduino? - Johnson&#039;s Techworld<\/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:\/\/johnsonfrancis.org\/techworld\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to upload an Easy BITX sketch by VU3GAO to the Raduino? - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"Uploading the Easy Bitx firmware by VU3GAO to a Raduino (Arduino Nano-based) board involves using the Arduino IDE to compile and flash the code via a USB cable. The Easy Bitx is a simplified transceiver utilizing an Si5351 VFO and a 10MHz IF. Prerequisites Steps to Upload the Sketch Calibrating the Firmware (BFO Setup) After [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/techworld\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\/\" \/>\n<meta property=\"og:site_name\" content=\"Johnson&#039;s Techworld\" \/>\n<meta property=\"article:published_time\" content=\"2026-11-07T09:18:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-09T02:46:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2026\/11\/How-to-upload-an-Easy-BITX-sketch-by-VU3GAO-to-the-Raduino.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1306\" \/>\n\t<meta property=\"og:image:height\" content=\"735\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"headline\":\"How to upload an Easy BITX sketch by VU3GAO to the Raduino?\",\"datePublished\":\"2026-11-07T09:18:45+00:00\",\"dateModified\":\"2026-11-09T02:46:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\\\/\"},\"wordCount\":378,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2026\\\/11\\\/How-to-upload-an-Easy-BITX-sketch-by-VU3GAO-to-the-Raduino.jpg\",\"articleSection\":[\"Amateur Radio (Ham Radio)\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/how-to-upload-an-easy-bitx-sketch-by-vu3gao-to-the-raduino\\\/\",\"name\":\"How to upload an Easy BITX sketch by VU3GAO to the Raduino? 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