{"id":187032,"date":"2025-05-05T11:33:21","date_gmt":"2025-05-05T15:33:21","guid":{"rendered":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/?p=187032"},"modified":"2026-05-04T08:38:04","modified_gmt":"2026-05-04T12:38:04","slug":"line-of-sight-communication","status":"publish","type":"post","link":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/","title":{"rendered":"Line Of Sight Communication"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-1024x768.jpeg\" alt=\"\" class=\"wp-image-198362\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-1024x768.jpeg 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-300x225.jpeg 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-768x576.jpeg 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-1536x1152.jpeg 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-2048x1536.jpeg 2048w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-1920x1440.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-large-font-size\"><strong>Team Members<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.linkedin.com\/in\/burke-bryan\/\">Bryan Burke<\/a>, Electrical and Computer Engineering &#8217;25<\/li>\n\n\n\n<li><a href=\"http:\/\/www.linkedin.com\/in\/madison-king18\">Madison King<\/a>, Electrical and Computer Engineering &#8217;25<\/li>\n\n\n\n<li><a href=\"https:\/\/www.linkedin.com\/in\/ginawang124\/\">Gina Wang<\/a>, Electrical and Computer Engineering &#8217;25<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>Mentors<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Professor Jack Mottley<\/li>\n\n\n\n<li>Professor Dan Phinney<\/li>\n\n\n\n<li>Professor Irving Barron Martinez<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>Introduction<\/strong><\/p>\n\n\n\n<p>Our team&nbsp;designed a line of sign communications system that sends text messages between two devices using infrared lasers. The system utilizes Arduinos which send a Pulse Width Modulated signal between them. It allows users to enter their own 32 character messages using the provided keypad or choose from one of three preset messages.&nbsp;<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Hardware<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"578\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-4-1024x578.png\" alt=\"\" class=\"wp-image-191692\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-4-1024x578.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-4-300x169.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-4-768x433.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-4-340x191.png 340w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-4.png 1170w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 1: System Block Diagram<\/em><\/figcaption><\/figure>\n\n\n\n<p>Data is entered through the keypad before it is translated by the sending Arduino microcontroller to a train of pulses, which the laser sends. The pulse train is detected by the phototransistor a few feet away. However, the phtotsensor\u2019s output is very small, necessitating the use of a comparator in this design, which boosts the signal to a level where the receiving Arduino can interpret the data. From there, the message is displayed on the LCD display.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"976\" height=\"660\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-5.png\" alt=\"\" class=\"wp-image-191712\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-5.png 976w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-5-300x203.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-5-768x519.png 768w\" sizes=\"auto, (max-width: 976px) 100vw, 976px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 2: Receiver Circuit Diagram<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"669\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/Senior_Design_photo-1024x669.jpg\" alt=\"\" class=\"wp-image-198092\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/Senior_Design_photo-1024x669.jpg 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/Senior_Design_photo-300x196.jpg 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/Senior_Design_photo-768x502.jpg 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/Senior_Design_photo-1536x1003.jpg 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/Senior_Design_photo-2048x1338.jpg 2048w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/Senior_Design_photo-1920x1254.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 3: Photos of Finished Device&#8217;s Interior and Exterior<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"has-large-font-size\"><strong>Software<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"563\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-2-4-1024x563.png\" alt=\"\" class=\"wp-image-191742\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-2-4-1024x563.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-2-4-300x165.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-2-4-768x422.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-2-4-1536x845.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-2-4-2048x1126.png 2048w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-2-4-1920x1056.png 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 4: Sender Code Block Diagram<\/em><\/figcaption><\/figure>\n\n\n\n<p>The sending code interprets keypad inputs, where every 2 presses of the keypad corresponds to one character. The message will be displayed on the screen as the user enters it. Once the user confirms the message, the message is sent as a Pulse Width Modulated signal to the receiver. This signal contains a start bit followed by 6 bits for each character and then ends with a stop bit.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"847\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-1-4-1024x847.png\" alt=\"\" class=\"wp-image-191762\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-1-4-1024x847.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-1-4-300x248.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-1-4-768x635.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-1-4-1536x1270.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-1-4.png 1849w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 5: Receiver Code block diagram<\/em><\/figcaption><\/figure>\n\n\n\n<p>The receiving code utilizes conditional logic with an interrupt that triggers when the signal changes. It analyzes the pulse duration to determine what pulse was sent. Once a message is completely received, it decodes the binary string to display the final message to the user.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"670\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-3-2-1024x670.png\" alt=\"\" class=\"wp-image-191752\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-3-2-1024x670.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-3-2-300x196.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-3-2-768x503.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-3-2-1536x1006.png 1536w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-3-2.png 1680w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 6: Keypad Diagram<\/em><\/figcaption><\/figure>\n\n\n\n<p>On the keypad, each button contains 1 number and 3 letters that are selected using the buttons on the far right column. In order to send the message, the user must select the &#8220;1&#8221; key followed by &#8220;1st Char.&#8221; There are also three pre-programmed messages available for the user to select. In order to select one, the user should select the &#8220;Preset Messages&#8221; button followed by the char button which corresponds to the message they would like.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-6-2-1024x768.png\" alt=\"\" class=\"wp-image-191792\" srcset=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-6-2-1024x768.png 1024w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-6-2-300x225.png 300w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-6-2-768x576.png 768w, https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/04\/Senior-Design-Block-Diagram-Page-6-2.png 1040w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Figure 7: Pulse Modulation Scheme<\/em><\/figcaption><\/figure>\n\n\n\n<p class=\"has-large-font-size\"><strong>Demo Video<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"wp-embed\"><div class=\"wp-embed-wrap\"><iframe loading=\"lazy\" title=\"Line of Sight Communication Demo Video\" width=\"1062\" height=\"597\" src=\"https:\/\/www.youtube.com\/embed\/eqdB7yyGIJU?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><\/div><\/div>\n<\/div><\/figure>\n\n\n\n<p class=\"has-large-font-size\"><strong>Future Recommendations<\/strong><\/p>\n\n\n\n<p>If continued work was done on this project these are the improvements that we would like to see made.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Improving the Range:<\/strong>&nbsp;In order to improve the range beyond 5 ft. there must be a way to better align the laser beam or limit the beam spread.&nbsp;A higher power laser could be implemented as well.<\/li>\n\n\n\n<li><strong>Faster Data Transmission<\/strong>: This would require a different laser with a faster switching speed to keep up with higher frequencies. It would also require the code to be modified to work at the microsecond scale.<\/li>\n\n\n\n<li><strong>Adding Voice Transmission:<\/strong>&nbsp;Additional hardware and software, specifically an ADC and DAC, would be required along with much higher switching speeds for successful voice transmission.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>Acknowledgements<\/strong><\/p>\n\n\n\n<p>Thank you to professors Jack Mottley, Dan Phinney and Irving Barron for their help and support while creating this project. We appreciate the technical expertise of Paul Osborne and Kyle Ohlschlager.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Our team\u00a0designed a line of sign communications system that sends text messages between two devices using infrared lasers.<\/p>\n","protected":false},"author":16712,"featured_media":198362,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[4442,116],"tags":[22772,22752,22802,22792,22762,22812,22782],"coauthors":[21332,21342,21352],"class_list":["post-187032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-archive","category-ece-archive","tag-arduino","tag-communication","tag-handheld","tag-infrared","tag-lasers","tag-pulse-width-modulation","tag-radiation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Line Of Sight Communication - Senior Design Day<\/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:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Line Of Sight Communication - Senior Design Day\" \/>\n<meta property=\"og:description\" content=\"Our team\u00a0designed a line of sign communications system that sends text messages between two devices using infrared lasers.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/\" \/>\n<meta property=\"og:site_name\" content=\"Senior Design Day\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-05T15:33:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-04T12:38:04+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-1200x630.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bryan Burke, Madison King, Gina Wang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bryan Burke, Madison King, Gina Wang\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/\"},\"author\":{\"name\":\"Bryan Burke\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#\\\/schema\\\/person\\\/55323b8aeb97b53cece802f6aa877bc8\"},\"headline\":\"Line Of Sight Communication\",\"datePublished\":\"2025-05-05T15:33:21+00:00\",\"dateModified\":\"2026-05-04T12:38:04+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/\"},\"wordCount\":551,\"image\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/IMG_5541-scaled.jpeg\",\"keywords\":[\"Arduino\",\"Communication\",\"Handheld\",\"Infrared\",\"Lasers\",\"Pulse Width Modulation\",\"Radiation\"],\"articleSection\":[\"3. Programs Archive\",\"ECE Archive\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/\",\"name\":\"Line Of Sight Communication - Senior Design Day\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/IMG_5541-scaled.jpeg\",\"datePublished\":\"2025-05-05T15:33:21+00:00\",\"dateModified\":\"2026-05-04T12:38:04+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#\\\/schema\\\/person\\\/55323b8aeb97b53cece802f6aa877bc8\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/IMG_5541-scaled.jpeg\",\"contentUrl\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/IMG_5541-scaled.jpeg\",\"width\":2560,\"height\":1920},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/line-of-sight-communication\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Line Of Sight Communication\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#website\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/\",\"name\":\"Senior Design Day\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/#\\\/schema\\\/person\\\/55323b8aeb97b53cece802f6aa877bc8\",\"name\":\"Bryan Burke\",\"url\":\"https:\\\/\\\/www.hajim.rochester.edu\\\/senior-design-day\\\/author\\\/bburke10\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Line Of Sight Communication - Senior Design Day","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:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/","og_locale":"en_US","og_type":"article","og_title":"Line Of Sight Communication - Senior Design Day","og_description":"Our team\u00a0designed a line of sign communications system that sends text messages between two devices using infrared lasers.","og_url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/","og_site_name":"Senior Design Day","article_published_time":"2025-05-05T15:33:21+00:00","article_modified_time":"2026-05-04T12:38:04+00:00","og_image":[{"width":1200,"height":630,"url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-1200x630.jpeg","type":"image\/jpeg"}],"author":"Bryan Burke, Madison King, Gina Wang","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Bryan Burke, Madison King, Gina Wang","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/#article","isPartOf":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/"},"author":{"name":"Bryan Burke","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#\/schema\/person\/55323b8aeb97b53cece802f6aa877bc8"},"headline":"Line Of Sight Communication","datePublished":"2025-05-05T15:33:21+00:00","dateModified":"2026-05-04T12:38:04+00:00","mainEntityOfPage":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/"},"wordCount":551,"image":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/#primaryimage"},"thumbnailUrl":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-scaled.jpeg","keywords":["Arduino","Communication","Handheld","Infrared","Lasers","Pulse Width Modulation","Radiation"],"articleSection":["3. Programs Archive","ECE Archive"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/","name":"Line Of Sight Communication - Senior Design Day","isPartOf":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/#primaryimage"},"image":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/#primaryimage"},"thumbnailUrl":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-scaled.jpeg","datePublished":"2025-05-05T15:33:21+00:00","dateModified":"2026-05-04T12:38:04+00:00","author":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#\/schema\/person\/55323b8aeb97b53cece802f6aa877bc8"},"breadcrumb":{"@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/#primaryimage","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-scaled.jpeg","contentUrl":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-content\/uploads\/2025\/05\/IMG_5541-scaled.jpeg","width":2560,"height":1920},{"@type":"BreadcrumbList","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/line-of-sight-communication\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/"},{"@type":"ListItem","position":2,"name":"Line Of Sight Communication"}]},{"@type":"WebSite","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#website","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/","name":"Senior Design Day","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/#\/schema\/person\/55323b8aeb97b53cece802f6aa877bc8","name":"Bryan Burke","url":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/author\/bburke10\/"}]}},"_links":{"self":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts\/187032","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/users\/16712"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/comments?post=187032"}],"version-history":[{"count":23,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts\/187032\/revisions"}],"predecessor-version":[{"id":214332,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/posts\/187032\/revisions\/214332"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/media\/198362"}],"wp:attachment":[{"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/media?parent=187032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/categories?post=187032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/tags?post=187032"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.hajim.rochester.edu\/senior-design-day\/wp-json\/wp\/v2\/coauthors?post=187032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}