Visualizing How Current and Voltage Behave in a Mag Loop Antenna
Ace electrical engineer, Jeri Ellsworth, is back to deep-nerding science and technology on YouTube.
antenna
Six Homebrew Hacks to Boost Your Wi-Fi
WiFi connections might not be quite as good as physical cable, but they do offer the ability to move your computer around without physically rewiring or reconnecting things. Unfortunately, these connections are usually limited to, at most, a couple hundred feet. On the other hand, if the signal is properly focused with an off-the-shelf or […]
MAKE Asks: Projects from our Pages
MAKE Asks: is a weekly column where we ask you, our readers, for responses to maker-related questions. We hope the column sparks interesting conversation and is a way for us to get to know more about each other.
DIY Fractal Antenna for Digital TV
Spotted in the MAKE Flickr Pool, this homemade fractal antenna for digital television signals by Roy Jacobsen of Fargo, ND. Instructions for, and discussions of, similar designs are available in this Instructable from William Ruckman. Judging from the comments over there, folks who have built their own fractal antennae are quite pleased with how they […]
First Pictures From the Pegboard Phased Array Radar
Yesterday I mentioned MIT’s soon-to-be-released open-courseware materials detailing a DIY phrased radar array radar system built from pegboard and wi-fi antennae. The project, from MIT engineers Drs. Bradley Perry, Jonathan Paul Kitchens, Patrick Bell, Jeffrey Herd, and Greg Charvat produces ‘radar video’ at about three frames per second. Greg just e-mailed me a link to […]
DIY Phased Array Radar From Pegboard and Wi-Fi Antennas
Yes, you read that correctly. No hard technical details are out yet, but this amazing project from MIT radar hackers Drs. Bradley Perry, Jonathan Paul Kitchens, Patrick Bell, Jeffrey Herd, and MAKE regular Gregory L. Charvat is soon to be published as part of MIT’s open courseware initiative. Cost of parts is about $950. The […]
Pneumatic Antenna Launcher uses Android, Free App for AR Scope
We have covered Alan’s Biocca’s fantastic clearinghouse site antennalaunchers.com before, and Brookfield, CT, resident Andrew Stoev’s basic launcher design appears to be a slightly up-gunned version of Alan’s CSV19 pneumatic antenna launcher. It’s a beautiful build, but my favorite feature is the quick-release mount he added for his Android device. Using a free app called GeoCam, his phone, when so mounted, becomes an augmented-reality aiming scope that provides GPS location, compass orientation, and (probably most usefully for this purpose) phone inclination data.
