Chetan Sharma

The “useless machine” is a classic DIY project. It’s a box with a single switch. When you press the switch, the box extends an arm and turns it off. It is truly a masterful representation of existential ennui in the 21st century. Let’s make an excessive version of it. [Read More]

How do you prevent a hall of rowdy mechanical engineering students from destroying brand-new power tools? Why is this even a problem? [Read More]

Some projects are born of meticulous planning. Others are born out of boredom. Witness the latter with the following project: [Read More]

“Cheap” and “Laser Cutter” are not words that are normally seen together; the CO2 laser tubes they use are often to blame for this. Cooling systems, high-voltage power supplies, and flying-mirror assemblies don’t help. [Read More]

A head-pointer is a little-known tidbit of technology used by those with limited control of their extremities. It consists of a stick (often with a capacitive stylus attached) that is secured to the head of a patient. Using this stick, a patient can operate buttons, keyboards, tablets, and more using... [Read More]