--- title: Light Following Robot Does It The Analog Way | daily.dev description: A light-following robot built using analog electronics instead of microcontrollers demonstrates that simple solutions can work effectively. The design uses... canonical: https://daily.dev/posts/light-following-robot-does-it-the-analog-way-efk3wxye5 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Light Following Robot Does It The Analog Way | daily.dev og:description: A light-following robot built using analog electronics instead of microcontrollers demonstrates that simple solutions can work effectively. The design uses... og:url: https://daily.dev/posts/light-following-robot-does-it-the-analog-way-efk3wxye5 og:image: https://api.daily.dev/og/posts/eFK3WxyE5.png og:image:alt: Light Following Robot Does It The Analog Way og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Light Following Robot Does It The Analog Way **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 0 upvotes · 0 comments ## Summary A light-following robot built using analog electronics instead of microcontrollers demonstrates that simple solutions can work effectively. The design uses light-dependent resistors (LDRs) wrapped in cardboard tubes for directional sensing, an op-amp to compare resistance values, and skid-steer motor control. An improved version adds a 555 timer IC for PWM-like control, enabling smoother steering by varying motor speeds based on light sensor ratios. The project showcases how analog circuits can accomplish tasks often solved with processors and code. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Robot Sees Light With No CPU](https://daily.dev/posts/robot-sees-light-with-no-cpu-ubonhy33a) · Hackaday · 0 upvotes · 0 comments - [Analog Circuitry Lets You Blow This LED Out](https://daily.dev/posts/analog-circuitry-lets-you-blow-this-led-out-avz6pro26) · Hackaday · 0 upvotes · 0 comments - [Transforming Lamp Built With LED Filaments](https://daily.dev/posts/transforming-lamp-built-with-led-filaments-mdcwxx3xr) · Hackaday · 0 upvotes · 0 comments - [Rethinking how robots move: Light and AI drive precise motion in soft robotic arm](https://daily.dev/posts/rethinking-how-robots-move-light-and-ai-drive-precise-motion-in-soft-robotic-arm-shcwzbmji) · Robohub · 0 upvotes · 0 comments --- Tags: [#robotics](https://daily.dev/tags/robotics), [#embedded](https://daily.dev/tags/embedded), [#sensors](https://daily.dev/tags/sensors) [View this post on daily.dev](https://daily.dev/posts/light-following-robot-does-it-the-analog-way-efk3wxye5) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Light Following Robot Does It The Analog Way","url":"https://daily.dev/posts/light-following-robot-does-it-the-analog-way-efk3wxye5","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/light-following-robot-does-it-the-analog-way-efk3wxye5"},"datePublished":"2026-01-29T00:08:07.146Z","dateModified":"2026-01-29T00:08:26.163Z","description":"A light-following robot built using analog electronics instead of microcontrollers demonstrates that simple solutions can work effectively. The design uses...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b5eaf1b7ba0198fa61e62352ea24b834?_a=AQAEulh","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/b5eaf1b7ba0198fa61e62352ea24b834?_a=AQAEulh","isAccessibleForFree":true,"articleSection":"Hackaday","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hackaday","logo":"https://media.daily.dev/image/upload/s--JhDfhy70--/f_auto,q_auto/v1767541814/logos/hackaday","url":"https://daily.dev/sources/hackaday"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/light-following-robot-does-it-the-analog-way-efk3wxye5","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"robotics,embedded,sensors","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hackaday","item":"https://daily.dev/sources/hackaday"},{"@type":"ListItem","position":3,"name":"Light Following Robot Does It The Analog Way"}]} ```