--- title: It’s A Spectrum, With An RP2350 ULA | daily.dev description: A hobbyist named Vlad has built a ZX Spectrum-compatible homebrew computer using an RP2350 microcontroller to replace the original Sinclair ULA chip in... canonical: https://daily.dev/posts/it-s-a-spectrum-with-an-rp2350-ula-43keln3ze twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: It’s A Spectrum, With An RP2350 ULA | daily.dev og:description: A hobbyist named Vlad has built a ZX Spectrum-compatible homebrew computer using an RP2350 microcontroller to replace the original Sinclair ULA chip in... og:url: https://daily.dev/posts/it-s-a-spectrum-with-an-rp2350-ula-43keln3ze og:image: https://api.daily.dev/og/posts/43kELn3Ze.png og:image:alt: It’s A Spectrum, With An RP2350 ULA 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. # It’s A Spectrum, With An RP2350 ULA **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 1 upvotes · 0 comments ## Summary A hobbyist named Vlad has built a ZX Spectrum-compatible homebrew computer using an RP2350 microcontroller to replace the original Sinclair ULA chip in software. The build blends retro and modern elements, featuring a period-style rubber keyboard with Spectrum decals on phenolic stripboard, alongside both classic (cassette port, Sinclair joystick) and modern (VGA, gameport) interfaces. While not cycle-accurate to the original hardware, it runs games successfully. HDMI support is planned but not yet implemented, and there is no Spectrum edge connector for original peripherals. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Making A Retro\(ish\) Game Console From Scratch](https://daily.dev/posts/making-a-retro-ish-game-console-from-scratch-ltbc64ddx) · Hackaday · 0 upvotes · 0 comments - [Hackaday Europe 2026 – Building A Retro PC From Scratch](https://daily.dev/posts/hackaday-europe-2026-building-a-retro-pc-from-scratch-fqbse5mn7) · Hackaday · 0 upvotes · 0 comments - [Got an Atari 2600](https://daily.dev/posts/got-an-atari-2600-igiunalof) · Two Stop Bits · 0 upvotes · 0 comments - [Modern web for the ZX Spectrum](https://daily.dev/posts/modern-web-for-the-zx-spectrum-qay5tltk5) · Two Stop Bits · 1 upvotes · 0 comments - [It’s An Apple Lisa, On A FPGA](https://daily.dev/posts/it-s-an-apple-lisa-on-a-fpga-65anrjh0g) · Hackaday · 0 upvotes · 0 comments --- Tags: [#retrocomputing](https://daily.dev/tags/retrocomputing) [View this post on daily.dev](https://daily.dev/posts/it-s-a-spectrum-with-an-rp2350-ula-43keln3ze) ```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":"It’s A Spectrum, With An RP2350 ULA","url":"https://daily.dev/posts/it-s-a-spectrum-with-an-rp2350-ula-43keln3ze","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/it-s-a-spectrum-with-an-rp2350-ula-43keln3ze"},"datePublished":"2026-07-13T18:45:07.769Z","dateModified":"2026-07-17T14:21:40.341Z","description":"A hobbyist named Vlad has built a ZX Spectrum-compatible homebrew computer using an RP2350 microcontroller to replace the original Sinclair ULA chip in...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/aeff2caa8c61c39466bcef6100d810a8?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/aeff2caa8c61c39466bcef6100d810a8?_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/it-s-a-spectrum-with-an-rp2350-ula-43keln3ze","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"retrocomputing","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":"It’s A Spectrum, With An RP2350 ULA"}]} ```