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Instant-on tiny ESP32 PC with an editor, compiler, and apps installer

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This started as a "cyberdeck" style crafts project using ESP32-S3, for some retro coding. Then I got carried away and wrote a self-hosted mini C compiler for it. Now I published the whole system that runs it. The core reusable parts are also packaged in Espressif Components Registry as "BreezyBox".So far, this platform lives up to my dreams: instant on, snappy when optimized, flexible with resource allocation.I upgraded to a bigger screeen: Waveshare ESP32-S3-Touch-LCD-7B, 7", 1024x600. It takes some effort to drive it with good speed on the S3, but this sort of challenge is exactly why I started this project, so I am having fun.It captures a lot of the old school DOS era coding experience. I created a custom fast text mode driver, plan to add VGA-like graphics next. ANSI text demos run smooth, as you can see in the demo video featured in the Readme.App installs also work smoothly. The first time it installed 6 apps from my git repo with one command, felt like, "OMG, I got homebrew to run on a toaster!" And best of all, it can install from any repo, no approvals or waiting, you just publish a compatible ELF file in your release.It is something like Raspberry Pi, but without the overhead of a full server-grade OS.Repo: [https://github.com/valdanylchuk/breezydemo/](https://github.com/valdanylchuk/breezydemo/)If you like small elegant systems that punch above their weight, consider trying this sort of setup! It is surprisingly capable.

HN · launched Jan 29, 2026 · 7 upvotes (top 65%) · 1 view

Niche: experimental and embedded operating systems · 142 launches, 6 in the last 7 days ▼ -60% · Explore this niche →

Category and tags

  • Horizontal
  • Hardware & robotics
  • Prosumer
  • Not AI
  • Hobby / open-source project

Visit website ↗ Source listing ↗

Could you build this?

No Writing a custom C compiler, self-hosted OS/shell environment, and embedded system for an ESP32 microcontroller requires deep embedded engineering and compiler design.

What it would actually take: Requires writing an entire C compiler backend/frontend targeting Xtensa/RISC-V architectures, memory management suited for KB-scale SRAM, and custom display/input drivers for ESP32-S3 peripherals. The software stack involves bare-metal C or FreeRTOS integration and custom assembly routines for instruction execution. This demands rare expertise across embedded hardware, hardware peripherals, and compiler architecture.

Discussion

No comments on this launch.

Competitors

Other products that read as similar to this one : 158 launches clear the similarity bar, closest 8 shown.

Attention rank: #109 of 159 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 90 days after the earliest competitor.

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.