The World's First Pneumatic Cannon with Android-Powered Scope
When you think of spud guns, you think of potatoes flying through the air at high speeds and exploding into a fine mist of mashed starchiness. What you don't think is that a potato launcher can actually be useful, and not just for practicing your aim. Think of what would happen if you combined a normal spud cannon with the awesome power of the Plumett AL-52, a grappling hook launcher powered by compressed air. What you get it is a practical spud gun that can help slingshot Christmas lights over your roof, but for amateur radio enthusiast Andrey Stoev, it has an even better application.
Being an amateur radio enthusiast means that Andrey sometimes has to set up long lengths of impromptu antennas, which can be as long as 160 meters. The best way to get the antennas up in the air is by draping them over trees, which is usually done by shooting fishing line over the intended path with a bow and arrow, even a slingshot. Andrey's antenna launcher design makes things a little easier (and funner).
His design is built on the foundation of the Alan Biocca's CSV19 Pneumatic Antenna Launcher, which launches tennis balls with 150 yards of fishing line attached over treetops, so that antennas can be hoisted up into the air. One of Andrey's impressive modifications is an augmented reality digital HUD (heads-up display), which is actually his Android smartphone running a mobile app called GeoCam, which displays elevation and azimuth for him.