Pan/Tilt wheel trainer ends up being a different way to play Quake

pan-tilt-wheel-controller

This is a special controller that [Gary Scott] built to help train camera operators. The pan and tilt controls on high-end movie cameras use wheels to pan and tilt smoothly. This rig can be built rather inexpensively and used to practice following a subject as you would with a camera. This is where the project takes a turn into familiar territory. [Gary] set up a system so that you can play the … [Read more...]

Cryptography – learn what it’s all about

from-0-to-cryptography-diffie-hellman-key-exchange

The concept of cryptography touches our lives many times per day, and that's probably a conservative estimate. We have a pretty good idea of how it works, having dealt with public-key cryptography for things like remote git repositories or ssh tunneling without a password. But we still enjoyed reading [Tiberiu Barbu's] primer on the subject which he calls From 0 to Cryptography. He begins the … [Read more...]

Personal Energy Orb prevents your life from being swallowed by the Internets

peo19

We love the Internet, but we are definitely guilty of losing track of the time we spend traipsing around our virtual haunts. This project will not only remind you to get out and exercise, it will cripple your digital experience if you don't heed its colorful warning. [Janko Hofmann] calls it the Personal Energy Orb. It's really just an Arduino and an RGB LED. But as with most creations, the … [Read more...]

Wii Nunchuck controlled robot exhibits rock solid balancing

rock-solid-self-balancing-robot

[Willy Wampa] is showing off his self-balancing robot. What strikes us about the build is how well tuned his feedback loop seems to be. In the video after the break you will see that there is absolutely no visible oscillation used to keep its balance. The parts used are quite easy to obtain. The acrylic mounting plates are his wife's design and were custom cut through the Pololu service. They … [Read more...]

Another great backyard observatory build

another-great-backyard-observatory

With a little help from their friends [Jeff Fisher] and his dad built this observatory in their back yard. Their use of simple building materials and techniques show that you can create a respectable home observatory without breaking the bank. It starts with a footing for the telescope mount. This is completely separated from the building that surrounds it so there will be no issue with … [Read more...]

This diy fume extractor will be a showpiece for your workbench

well-finished-fume-extractor

We have no idea how well this diy fume extractor works, but it sure does look great! We've been thinking that it's time to stop trying to blow away the solder fumes while working on project and this might be just the kind of motivation we need. The 6" cube doesn't get in the way of your work, and since it includes a carbon filter it should keep the smell of burning flux to a minimum. [Jeff's] … [Read more...]

Tutorial explains the concepts behind an IMU

sensor_board

[Anilm3] wrote in to share the IMU tutorial series he is working on. An Inertial Measurement Unit is most often found in self-balancing robots and quadcopters, providing enough high-speed sensor data to keep up with the effects of gravity.  He previously used some all-in-one IMU devices in school which did most of the work for him. But he wanted to grind down and look at what each sensor spits … [Read more...]