--- title: Airborne Particle Monitoring, The BIG Way | daily.dev description: A maker built a PM2.5 air quality monitor with an oversized wall-mounted LED display. A large addressable seven segment display PCB shows the particle count,... canonical: https://daily.dev/posts/airborne-particle-monitoring-the-big-way-yrwqvutmx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Airborne Particle Monitoring, The BIG Way | daily.dev og:description: A maker built a PM2.5 air quality monitor with an oversized wall-mounted LED display. A large addressable seven segment display PCB shows the particle count,... og:url: https://daily.dev/posts/airborne-particle-monitoring-the-big-way-yrwqvutmx og:image: https://api.daily.dev/og/posts/YRwqVutMx.png og:image:alt: Airborne Particle Monitoring, The BIG 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. # Airborne Particle Monitoring, The BIG Way **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 1 upvotes · 0 comments ## Summary A maker built a PM2.5 air quality monitor with an oversized wall-mounted LED display. A large addressable seven segment display PCB shows the particle count, with a tiny Seeed Studio Xiao board mounted on the back driving the particle sensor. The display's color changes as the particle count rises. Readings can also be logged over a USB serial port. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What microcontroller is used to drive a large seven segment LED display for a DIY PM2.5 air quality monitor? A Seeed Studio Xiao board mounted on the back of the display PCB drives a PM2.5 particle sensor and the large addressable LED seven segment display. The display shows the live particle count and changes color as readings rise, and logged data can be read out over a USB serial port. _Builders wiring up custom air quality displays follow similar DIY sensor projects on daily.dev._ ## Similar posts on daily.dev - [A Smarter DIY Air Filter](https://daily.dev/posts/a-smarter-diy-air-filter-alxbfvg10) · Hackaday · 0 upvotes · 0 comments - [BIGTREETECH Panda Sense Pro 8-in-1 smart air quality monitor works with Home Assistant and Klipper for 3D printers](https://daily.dev/posts/bigtreetech-panda-sense-pro-8-in-1-smart-air-quality-monitor-works-with-home-assistant-and-klipper-f-gqi8pvex5) · CNX Software · 0 upvotes · 0 comments - [You, too, can make this ESP32 air quality detector that works with Home Assistant](https://daily.dev/posts/you-too-can-make-this-esp32-air-quality-detector-that-works-with-home-assistant-s2y4gsbwo) · XDA Developers · 1 upvotes · 0 comments - [Air Lab is the Flipper Zero of air quality monitors](https://daily.dev/posts/air-lab-is-the-flipper-zero-of-air-quality-monitors-6vjhmtx5a) · Jeff Geerling · 0 upvotes · 0 comments - [2026 Green Powered Challenge: Solar-Powered Pollution Monitor](https://daily.dev/posts/2026-green-powered-challenge-solar-powered-pollution-monitor-sr8bout7w) · Hackaday · 0 upvotes · 0 comments --- Tags: [#hardware](https://daily.dev/tags/hardware) [View this post on daily.dev](https://daily.dev/posts/airborne-particle-monitoring-the-big-way-yrwqvutmx) ```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":"Airborne Particle Monitoring, The BIG Way","url":"https://daily.dev/posts/airborne-particle-monitoring-the-big-way-yrwqvutmx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/airborne-particle-monitoring-the-big-way-yrwqvutmx"},"datePublished":"2026-10-28T02:04:26.312Z","dateModified":"2026-10-28T03:58:34.435Z","description":"A maker built a PM2.5 air quality monitor with an oversized wall-mounted LED display. 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