Tacit: A Haptic Wrist Rangefinder

Tacit is a wearable system that translates the distance to anything you aim your hand toward into pressure on your wrist. The closer the object, the greater the pressure. Sweep your hand around, and the device conveys to you a tactile image of your surroundings. I designed Tacit to help... Read more »

Tiny Wanderer

In early 2011 my robot club, the Dallas Personal Robotics Group, was looking for a way to help our beginning members build up their skills. To this end, we produced a series of lessons covering 5 topics needed to make a simple, programmable robot: making PCBs with the toner transfer... Read more »

Guitar Bag

There are countless ways to show your personality through crafts. It’s easy to create beyond the traditional and come up with something truly unique. Instead of sewing a bag that can simply carry your stuff, you can come up with something that reflects who you are. This guitar bag does... Read more »

Hacking R/C Power Outlets

Switching plug-in appliances from your computer or microcontroller isn’t difficult in theory, but doing it without turning your home into a potential deathtrap can be tricky. The safer way is to rely on remote control rather than wiring directly. Read more »

Speed Vest

This lightweight night-cycling vest displays your current speed in glowing, 7-inch-tall numbers easily visible to cars. Read more »

Kitty Kaleidoscope

A typical kaleidoscope contains 2 mirrors angled at 60°, which reflect a pattern to create a symmetrical effect that we can emulate in software such as Photoshop. Here’s how I did it. Read more »