--- title: Is This The Smallest Internet Radio? | daily.dev description: A hobbyist built an extremely compact internet radio using an ESP32-C3 microcontroller paired with a custom small PCB featuring a PCM5102A I2S DAC and... canonical: https://daily.dev/posts/is-this-the-smallest-internet-radio--udfwr8scy twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Is This The Smallest Internet Radio? | daily.dev og:description: A hobbyist built an extremely compact internet radio using an ESP32-C3 microcontroller paired with a custom small PCB featuring a PCM5102A I2S DAC and... og:url: https://daily.dev/posts/is-this-the-smallest-internet-radio--udfwr8scy og:image: https://api.daily.dev/og/posts/UdFwR8scy.png og:image:alt: Is This The Smallest Internet Radio? 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. # Is This The Smallest Internet Radio? **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 0 upvotes · 0 comments ## Summary A hobbyist built an extremely compact internet radio using an ESP32-C3 microcontroller paired with a custom small PCB featuring a PCM5102A I2S DAC and amplifier. The build, documented on Instructables, is notable mainly for its tiny size, with the connectors being comparatively large relative to the device itself. The maker speculates further miniaturization could come from dropping the connectors or using the ESP32's built-in (non-audio-grade) DAC, trading some audio quality for size. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [DIY SI5351 Radio Tunes In SW, MW, And More](https://daily.dev/posts/diy-si5351-radio-tunes-in-sw-mw-and-more-r0msaotyd) · Hackaday · 0 upvotes · 0 comments - [Someone turned a 60s Grundig Musikgerät radio into a networked speaker with an ESP32](https://daily.dev/posts/someone-turned-a-60s-grundig-musikger-t-radio-into-a-networked-speaker-with-an-esp32-l40fb3mm6) · XDA Developers · 0 upvotes · 0 comments - [Louder ESP32 Mini board adds WiFi and Bluetooth to old speakers for SqueezeLite, Snapclient, or ESPHome support](https://daily.dev/posts/louder-esp32-mini-board-adds-wifi-and-bluetooth-to-old-speakers-for-squeezelite-snapclient-or-esph-dd0nbmy7v) · CNX Software · 0 upvotes · 0 comments - [Another Radio On A Chip Design](https://daily.dev/posts/another-radio-on-a-chip-design-lkyxh9omu) · Hackaday · 0 upvotes · 0 comments - [PegorK/f32](https://daily.dev/posts/pegork-f32-jejkwsr9t) · Hacker News · 0 upvotes · 0 comments --- Tags: [#hardware](https://daily.dev/tags/hardware), [#iot](https://daily.dev/tags/iot), [#embedded](https://daily.dev/tags/embedded) [View this post on daily.dev](https://daily.dev/posts/is-this-the-smallest-internet-radio--udfwr8scy) ```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":"Is This The Smallest Internet Radio?","url":"https://daily.dev/posts/is-this-the-smallest-internet-radio--udfwr8scy","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/is-this-the-smallest-internet-radio--udfwr8scy"},"datePublished":"2026-10-03T05:23:10.140Z","dateModified":"2026-10-03T05:23:24.018Z","description":"A hobbyist built an extremely compact internet radio using an ESP32-C3 microcontroller paired with a custom small PCB featuring a PCM5102A I2S DAC and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5cd44281e6b672502083a0429c8d426a?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/5cd44281e6b672502083a0429c8d426a?_a=AQAEuop","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/is-this-the-smallest-internet-radio--udfwr8scy","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"hardware,iot,embedded","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":"Is This The Smallest Internet Radio?"}]} ```