--- title: Making RAM At Home In Your Own Semiconductor Fab | daily.dev description: A hobbyist known as Dr. Semiconductor has successfully fabricated a working 5×4 array of DRAM cells (20 bits total) in a home-built Class 100 cleanroom shed.... canonical: https://daily.dev/posts/making-ram-at-home-in-your-own-semiconductor-fab-eyosoqgtq twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Making RAM At Home In Your Own Semiconductor Fab | daily.dev og:description: A hobbyist known as Dr. Semiconductor has successfully fabricated a working 5×4 array of DRAM cells (20 bits total) in a home-built Class 100 cleanroom shed.... og:url: https://daily.dev/posts/making-ram-at-home-in-your-own-semiconductor-fab-eyosoqgtq og:image: https://api.daily.dev/og/posts/eYosoqGtq.png og:image:alt: Making RAM At Home In Your Own Semiconductor Fab 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. # Making RAM At Home In Your Own Semiconductor Fab **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 0 upvotes · 0 comments ## Summary A hobbyist known as Dr. Semiconductor has successfully fabricated a working 5×4 array of DRAM cells (20 bits total) in a home-built Class 100 cleanroom shed. The process mirrors industrial semiconductor fabrication at a small scale: photoresist coating, UV exposure through a mask, wet etching, and spin-on-glass doping instead of ion implantation. While the capacitors are somewhat leaky and the output is far from commercial DRAM, the project demonstrates that DIY semiconductor fabrication is achievable. The plan is to scale up to a larger DRAM array and eventually connect it to a PC. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Chips Just 10 Atoms Thick Could Bring Computers With Extremely Compact Memory](https://daily.dev/posts/chips-just-10-atoms-thick-could-bring-computers-with-extremely-compact-memory-ut8xnlo69) · Singularity Hub · 0 upvotes · 0 comments - [Capacitor Memory Makes Homebrew Relay Computer Historically Plausible](https://daily.dev/posts/capacitor-memory-makes-homebrew-relay-computer-historically-plausible-k79tzeorq) · Hackaday · 0 upvotes · 0 comments - [Post-rampocalyptic Chip-Swap Provides Desktop Memory At Laptop Prices](https://daily.dev/posts/post-rampocalyptic-chip-swap-provides-desktop-memory-at-laptop-prices-vu1thdzt8) · Hackaday · 0 upvotes · 0 comments - [Making LEDs In The Home Fab](https://daily.dev/posts/making-leds-in-the-home-fab-pdmlg9v8c) · Hackaday · 1 upvotes · 1 comments --- [View this post on daily.dev](https://daily.dev/posts/making-ram-at-home-in-your-own-semiconductor-fab-eyosoqgtq) ```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":"Making RAM At Home In Your Own Semiconductor Fab","url":"https://daily.dev/posts/making-ram-at-home-in-your-own-semiconductor-fab-eyosoqgtq","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/making-ram-at-home-in-your-own-semiconductor-fab-eyosoqgtq"},"datePublished":"2026-04-23T05:23:29.844Z","dateModified":"2026-04-23T05:23:48.707Z","description":"A hobbyist known as Dr. Semiconductor has successfully fabricated a working 5×4 array of DRAM cells (20 bits total) in a home-built Class 100 cleanroom shed....","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c8a6bb79026df01b7fdfa7a35c16079b?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/c8a6bb79026df01b7fdfa7a35c16079b?_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/making-ram-at-home-in-your-own-semiconductor-fab-eyosoqgtq","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"","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":"Making RAM At Home In Your Own Semiconductor Fab"}]} ```