KidsColorOnline – Free Coloring Pages
[Free Printable PDF + Online Color]
What it does
500+ free coloring pages, step-by-step drawing guides & printable activities for kids 2–12. No signup required. New content added weekly!
Free coloring pages, step-by-step drawing guides, storybooks & printable activities for kids aged 2–12. No sign-up. No credit card. No catch. Just pure creative fun. Beat the heat with our exclusive collection of 20+ free Summer coloring pages, beach scenes, sunshine drawings, tropical greeting card templates, and outdoor activity sheets. Perfect for kids aged 4–12. 1,200+ easy drawing tutorials with clear step-by-step photos and video guides. From cute animals to popular anime characters — designed for complete beginners, kids aged 4 and up. 200+ beautifully illustrated free coloring books for kids — adventure, bedtime, animals, and fun themes. Download as PDF and print at home. Perfect…from kidscoloronline.com
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Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.
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Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
Life & fun · 26d ago · baselashraf81.github.io
Launched alongside, August 2026
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Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com