raw.org

If you want to learn about PID control that is a basic algorithm for autonomous tasks, have a look! What do you think about the visualization? https://raw.org/book/control-theory/introduction-to-pid-controllers/

After ages of inactivity, xarg.org is back under the new name raw.org - expect cool things to come! :)

Just published Trackball.js, which enables you freely rotate your DOM elements using CSS 3D transforms
https://www.xarg.org/2021/07/trackball-rotation-using-quaternions/ 😁

Trackball Rotation using Quaternions • Computer Science and Machine Learning Introduction to an intuitive 3D rotation of DOM elements using JavaScript

A new paper was published: The Inverse Kinematics of a Stewart Platform

Inverse Kinematics of a Stewart Platform • Open Source is Everything A mathematical derivation of the Inverse Kinematics of a Stewart Platform

You know the game Lights Out? I spent quite some time finding a solver/AI for it. Here is the result

LightsOut Solution using Linear Algebra • Code is poetry A mathematical derivation on how to solve the Lights Out puzzle using linear algebra - with an implementation in JavaScript

Just a small note today for the case you need to draw an error ellipse from a covariance matrix some day in machine learning

How to plot a covariance error ellipse • Code is poetry A mathematical derivation on how to plot a covariance error ellipse in Matlab and JavaScript

When you're gambling on the streets with a coin, have you ever wondered how you can make it a fair game? Here is how

Make a Fair Coin from a Biased Coin • Code is poetry A mathematical derivation on how to create a unbiased coin given a biased coin

A small math derivation to draw a roller chain (like a tank tread) in SVG

Mathematics of a roller chain animation • Code is poetry A mathematical derivation on how to animate a roller chain using SVG

https://www.xarg.org/2017/07/operate-a-syma-s107g-remote-control-helicopter-with-an-arduino/

Operate a Syma S107G Remote Control Helicopter with an Arduino • Code is poetry A deep dive into the remote control toy helicopter Syma S107G to get controlled with an Arduino board

The next piece of the big puzzle I'm working on is here: A game controller library for node.js!

Using Gamepads in JavaScript via node.js • Code is poetry A node.js library to work with Sony PlayStation controllers, Microsoft XBOX controllers SNES or a bunch of other controllers

I just published a JavaScript DHCP implementation http://www.xarg.org/2017/06/a-pure-javascript-dhcp-implementation/

Using a Wii Nunchuk with Arduino We've all grown up with gamepads in the hands, which makes them ideal to combine them with literally any possible application. A great invention of Nintendo is the Nunchuk, a cheap extension for the Wii U remote. As it uses I2C as transportation protocol, it's easy to access the raw data of the…