Hackernews posts about Scratch

Scratch is a visual programming language and online community that empowers children to learn coding concepts through creative and interactive projects.

1. For first time, a cell built from scratch grows and divides (www.quantamagazine.org)
   951 points by defrost 5 days ago | 302 comments
2. Building a custom octocopter from scratch with no prior hardware experience (karolina.mgdubiel.com)
   417 points by noleary 9 days ago | 90 comments
3. Show HN: I wrote a C++ ray tracer from scratch without AI (github.com)
   155 points by martiano 22 days ago | 64 comments
4. Build a Basic AI Agent from Scratch: Long Task Planning (medium.com)
   142 points by ruxudev 27 days ago | 53 comments
5. Running DOS on Behringers DDX3216 with a DIY x86-Bios from Scratch (chrisdevblog.com)
   117 points by rasz 23 days ago | 33 comments
6. Making a vintage LLM from scratch (crlf.link)
   104 points by croqaz 26 days ago | 29 comments
7. Show HN: NanoEuler – GPT-2 scale model in pure C/CUDA from scratch (github.com)
   55 points by vforno 8 days ago | 26 comments
8. Deriving the SVD (Single Value Decomposition) from scratch (stillthinking.net)
   35 points by pcael 8 days ago | 17 comments
9. Robotics Teams Are Rebuilding the Data Stack from Scratch (rerun.io)
   34 points by Tycho87 15 days ago | 1 comments
10. ClojureWasm is a Clojure runtime written from scratch in Zig and Clojure, no JVM (github.com)
    34 points by yogthos 18 days ago | discuss
11. "I scratched my own itch" isn't good enough (2025) (longform.asmartbear.com)
    7 points by ogundipeore 18 days ago | discuss
12. Show HN: NanoEuler – GPT-2 scale model in pure C/CUDA from scratch (github.com)
    6 points by vforno 17 days ago | 3 comments
13. Show HN: I built 10 ML algos from scratch because fit() predict() are not enough (github.com)
    6 points by akmoleksandr 27 days ago | 2 comments
14. Perseverance Scratches the Martian Surface, Finds Organic Carbon (nautil.us)
    6 points by Brajeshwar 10 days ago | discuss
15. I made memory from scratch – polymatt [video] (www.youtube.com)
    5 points by seanbrodie 8 days ago | discuss
16. Show HN: FlashQwen – A from-scratch CUDA inference engine for Qwen3 (github.com)
    5 points by langtang1996 21 days ago | discuss
17. Researchers say they trained a foundation model from scratch for about $1,500 (venturebeat.com)
    5 points by vlod 25 days ago | discuss
18. Out-of-core LLM inference engine written from scratch in Rust (github.com)
    4 points by Vage91 2 days ago | discuss
19. Show HN: I trained a 1B LLM from scratch for $315 and open-sourced weights+data (huggingface.co)
    4 points by Aiit-threshold 5 days ago | discuss
20. Show HN: Git-temp – scratchpad folder for AI agents; doesn't clutter Git status (github.com)
    4 points by sebmellen 9 days ago | discuss
21. Rura: Interactive TUI scratchpad for building shell pipelines (github.com)
    4 points by loa_observer 11 days ago | discuss
22. Implementing CRYSTALS-Kyber (post-quantum cryptography) from scratch in Python (jani.isohanni.fi)
    4 points by nftde 11 days ago | discuss
23. Ask HN: Do you reindex from scratch after making changes to Spotlight settings?
    4 points by amichail 20 days ago | discuss
24. Building Hollywood Motion Capture from Scratch [video] (www.youtube.com)
    4 points by Fudgel 26 days ago | discuss
25. BoredOS: Three years of building an OS from scratch (And loving every minute) (blog.boreddev.nl)
    3 points by boreddevnl 29 days ago | 2 comments
26. Star Trek – LCARS from scratch in C (blog.mihaisafta.com)
    3 points by saftamihai 5 days ago | discuss
27. Khaos C2: Building a Custom Command and Control from Scratch (medium.com)
    3 points by 882542F3884314B 8 days ago | discuss
28. LLM from Scratch: a small LLM running inside MIT's Scratch (github.com)
    3 points by alexkranias 12 days ago | discuss
29. Fast Fourier Transform from Scratch (www.adiuvoengineering.com)
    3 points by hasheddan 19 days ago | discuss
30. Writing a browser-use agent from scratch – Part 1/3 – The Capture (pdufour.substack.com)
    3 points by thunderbong 21 days ago | discuss