At 9 a.m. on a July morning, a Ukrainian drone swooped low over a dirt road and struck two Russian soldiers on a motorcycle.
20hOpinion
The Lessons of Ukraine’s Drone Warfare
The U.S. and its allies have a lot to learn—and stand to pay an enormous price if they fail to do so.
Taste The Code on MSN
Build an Ultrasonic Arduino Air Drum Set for Hours of Fun
Learn how to make a touchless air drum set using Arduino and ultrasonic sensors for endless musical fun.
Three batteries deliver 96 minutes of 4K flight time without FAA registration hassles.
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