Hacker News London Meetup #4

Life & fun · 10d ago · louisabraham.github.io

Photosynthesis fires two of your iPhone

Life & fun · 28d ago · photosynthesis.camera

Take control of hair pulling, nail biting & skin picking

Life & fun · 28d ago · solouno.io

Scroll through all 43,252,003,274,489,856,000 reachable Rubik's Cube permutations.

Life & fun · 26d ago · everycube.alen.is

The Interactive 3D Encyclopedia

Life & fun · 21d ago · expeditione.fun

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

Workflow Automations for the Human 👾 AI Workforce

AI · 2025 · trace.so

I built the world's most impractical 1000-pixel display and anyone in the world can draw on it. It draws a single pixel at a time and takes 30-60 minutes to complete a single image. Anyone can participate in the project by voting for the next image to be drawn, and submitting images. https:&#x2F;&#x2F;kilopx.com&#x2F;

Work · 2025 · benholmen.com

Job boards are dead. Your network is alive

AI · 2025 · contra.com

Kitten TTS is an open-source series of tiny and expressive text-to-speech models for on-device applications. We are excited to launch a preview of our smallest model, which is less than 25 MB. This model has 15M parameters. This release supports English text-to-speech applications in eight voices: four male and four female. The model is quantized to int8 + fp16, and it uses onnx for runtime. The model is designed to run literally anywhere eg. raspberry pi, low-end smartphones, wearables, browsers etc. No GPU required! We're releasing this to give early users a sense of the latency and voices…

Dev tools · 2025 · github.com

I was wondering how I can arrange objects along a spherical helix path, and read some articles on it. I ended up learning about parametric equations again, and make this visualization to document what I learned: https:&#x2F;&#x2F;visualrambling.space&#x2F;moving-objects-in-3d&#x2F; feel free to visit and let me know what you think!

Life & fun · 2025 · visualrambling.space

For HTML Day 2025 [1], I made a web service that displays the current sky at your approximate location as a CSS gradient. Colours are simulated on-demand using atmospheric absorption and scattering coefficients. Updates every minute, without the use of client-side JavaScript. Source code and additional information is available on GitHub: https:&#x2F;&#x2F;github.com&#x2F;dnlzro&#x2F;horizon [1] https:&#x2F;&#x2F;html.energy&#x2F;html-day&#x2F;2025&#x2F;index.html

Dev tools · 2025 · sky.dlazaro.ca