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QuadRF is a phased array antenna that can see WiFi through walls, spot drones in the sky... and it's powered by a Pi 5 and FPGA board. Very neat device, we have a full video up on Geerling Engineering...

Jeff Geerling

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172,297 görüntüleme • 1 ay önce •via X (Twitter)

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Have you ever wondered how Starlink can keep talking to satellites moving across the sky? It uses a Phased-Array Antenna. It has many small antenna elements on a flat surface, and each one is given a tiny phase delay so the radio wave adds up in one chosen direction. That lets the beam steer electronically and stay locked onto a fast-moving satellite. In this animation, the beam pattern was generated using computational electromagnetics, by computing how the array’s directional pattern changes as those phases are updated.

Have you ever wondered how Starlink can keep talking to satellites moving across the sky? It uses a Phased-Array Antenna. It has many small antenna elements on a flat surface, and each one is given a tiny phase delay so the radio wave adds up in one chosen direction. That lets the beam steer electronically and stay locked onto a fast-moving satellite. In this animation, the beam pattern was generated using computational electromagnetics, by computing how the array’s directional pattern changes as those phases are updated.

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This video shows how AI turns WiFi routers into ‘cameras’ that can see people through walls With the help of AI, researchers were able to detect the movement of human bodies in a room using WiFi routers - even through walls

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Pi Network's vision is to build the world's most inclusive Peer-to-Peer marketplace, powered by $Pi. And we can see that happening. Pi Network #PiNetwork #UptoDate #PiUtility

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AI using just the ambient radio wave of a WiFi router can now “see through” walls and visualize where people are.

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Wifi signals can be used to see your body through walls. Using open source software and some cheap hardware, you can measure the disturbances in wifi waves emanating from a router. Those disturbances are measured and converted into body shapes to tell you where someone is in a room.

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Ukrainian remote detonation kits in a plastic case or sealed tube are intended for control of explosive devices defending positions or dropped by drones. The remote controller has a directional antenna, can use repeaters, and can query the status of the device. 1/

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“I want to take out a jet-powered Shahed head-on,” says Hero of Ukraine Hulk from the BULAVA unit of the Separate Presidential Brigade. We spent a night on duty with a soldier who is fully devoted to his mission and continues destroying enemy drones even while on leave. In the video, Hulk talks about new enemy tactics and demonstrates the Hornet Vision ecosystem by Wild Hornets in action — from interceptor STING drones to the revolutionary 360° antenna that is changing the tactics of this war. The full video featuring Hulk’s combat work and valuable experience is now available on our YouTube channel. Go watch it: 📹

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#BreakingNews | ‘We have a country, known as Iran, that for 47 years has been a failure. And they're very close to having a nuclear weapon. We can kick the can and get that 50,000 up to 55 and 60, it's no end, or we can take a stop and make a little journey into the Middle East

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New Writing Exercise video. This time we we made a category checklist with Trap Dickey and wrote a verse on the spot. Very fun. Full episode is out on RoneDotCom

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