--- title: Bumpy | daily.dev description: Bumpy is a fully open-source homemade MP3 player inspired by the iPod Shuffle. It features a scroll/click wheel UI, eight LED status indicators, and plays MP3... canonical: https://daily.dev/posts/bumpy-348xo4lmw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Bumpy | daily.dev og:description: Bumpy is a fully open-source homemade MP3 player inspired by the iPod Shuffle. It features a scroll/click wheel UI, eight LED status indicators, and plays MP3... og:url: https://daily.dev/posts/bumpy-348xo4lmw og:image: https://api.daily.dev/og/posts/348xO4lmW.png og:image:alt: Bumpy 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. # Bumpy **[Matt Keeter](https://daily.dev/sources/mattkeeter)** · 3 min read · 0 upvotes · 0 comments ## Summary Bumpy is a fully open-source homemade MP3 player inspired by the iPod Shuffle. It features a scroll/click wheel UI, eight LED status indicators, and plays MP3 files from a micro-SD card. The hardware is built around an ATmega32U4 microcontroller and VS1003 MP3 decoder chip on a custom two-layer PCB designed in Eagle and manufactured by OSH Park. The firmware handles FAT32 file reading via the sd-reader library and USB mass storage via the LUFA library. The 3D-printed resin case was produced at Formlabs. All source files — firmware, PCB design, and case files — are available on GitHub, with parts costing around $58 for a single build. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Emulating The IPod](https://daily.dev/posts/emulating-the-ipod-u7xhd2xw0) · Hackaday · 0 upvotes · 0 comments - [samcervantes/bumble-berry-pi: A cheap & easy to build raspberry pi cyberdeck](https://daily.dev/posts/samcervantes-bumble-berry-pi-a-cheap-easy-to-build-raspberry-pi-cyberdeck-zpfz2qugm) · Hacker News · 2 upvotes · 0 comments - [GitHub - WeebLabs/DSPi: A fully featured audio DSP firmware for the Raspberry Pi Pico \(RP2040\) and Pico 2 \(RP2350\).](https://daily.dev/posts/github---weeblabs-dspi-a-fully-featured-audio-dsp-firmware-for-the-raspberry-pi-pico-rp2040-and-p-97dhcbolr) · Hacker News · 0 upvotes · 0 comments - [Simple MIDI Sample Player Runs On ESP32](https://daily.dev/posts/simple-midi-sample-player-runs-on-esp32-9m6v6bz9q) · Hackaday · 0 upvotes · 0 comments - [Bean – Ploopy](https://daily.dev/posts/bean-ploopy-duzthrqyl) · Lobsters · 0 upvotes · 0 comments --- Tags: [#embedded](https://daily.dev/tags/embedded), [#firmware](https://daily.dev/tags/firmware) [View this post on daily.dev](https://daily.dev/posts/bumpy-348xo4lmw) ```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":"Bumpy","url":"https://daily.dev/posts/bumpy-348xo4lmw","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/bumpy-348xo4lmw"},"datePublished":"2026-03-31T12:30:36.351Z","dateModified":"2026-03-31T13:00:47.732Z","description":"Bumpy is a fully open-source homemade MP3 player inspired by the iPod Shuffle. 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