Exorus Koh | Blog

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Dell XPS 15 Upgrade & Undervolting

Considerations for a replacement laptop—such as thermal limitations and cost efficiency—and a short narrative on SSD upgrades and undervolti

Archer: Workstation Build

A new workstation build with Intel Core i7-7820X Skylake-X processor, overclocked to 4.8 GHz. The machine is fitted into a Thermaltake Core

Can bullets fired into the air kill?

Is it possible for a projectile fired into the air to land and kill someone? Here we visit the fundamental physics of projectile motion, and

Extracting Data from Websites with Mathematica

This is partly a follow-up post to my article titled "Can bullets fired into the air kill?". In this write-up we examine how Mathe

The Human Body: 3D Image Projection in Mathematica

This is partly a follow-up post to my article titled "Can bullets fired into the air kill?". In this write-up we examine how Mathe

Manipulating Geographical Data with OpenStreetMap and QGIS

This is partly a follow-up post to my article titled "Can bullets fired into the air kill?". Here we examine the use of QGIS in th

Personal Desktop: Thermals and Overclocking

Four years ago I built a custom high-performance desktop, and two years ago I did a moderate overclock to deal with increasing computational

Tank Rover: Animations

In my robotics post on the remote-controlled tank rover and my demonstration video, I had included some animations illustrating the various

Tank Rover: Arduino and Behind-The-Scenes

Here we talk about the construction of the Arduino variant of my radio-controlled tank rover, going over the electronics and the programming

SIMC Planner

Three years ago I built the first version of a competition scheduling program meant for use by my school's staff; very recently I comple

Vibrating Membranes and Fancy Animations

In my robotics post on the linear harmonic oscillator I had showed an animation on the vibrational normal modes of a circular membrane—here

Six-Speed Gearbox: Generating 3D Graphics

Using Mathematica to generate translucent 3D schematic graphics for my Lego Six-Speed Gearbox, starting from raw Lego Digital Designer CAD m

Personal Desktop Build: The Shadow

A high-performance computer build with an Intel i7-4770K with 16 Gb of RAM, and an NVIDIA GTX 760, to be utilized for video editing, simulat