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A student built a real anti-gravity machine… using an Arduino. How to Make an Acoustic Levitator: Arduino Nano + motor driver + about 60 ultrasonic transducers. They all emit ~40 kHz sound. The sound waves meet and form fixed pockets in the air. Tiny bits of styrofoam get stuck... show more

Ilir Aliu

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817,022 görüntüleme • 4 ay önce •via X (Twitter)

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That’s insane! 🤯 A student built an acoustic levitation divide with an Arduino board. He built it using an Arduino Nano, a motor driver, and 60 ultrasonic transducers that can levitate low-density objects in place indefinitely. The transducers send out 40 kHz waves that create standing waves. The interference pattern produces nulls that trap objects. High-pressure areas form below and above the object, locking it in the low-pressure area between them. The transducers produce two sound waves moving in opposing directions at the same frequency and amplitude. The effect is that the low-pressure areas don't appear to move, like whipping a rope from both ends and having the wave meet in the middle. Sound waves are oscillating at high and low pressures. By creating a sound wave that doesn't move forward (a standing wave), you create areas of constant pressure. 🔉 Objects get trapped in the null points between high-pressure zones. The craziest part is that this was made more than 7 years ago! DIY levitation 😮‍💨 Reddit link: ~~ ♻️ Join the weekly robotics newsletter, and never miss any news →

That’s insane! 🤯 A student built an acoustic levitation divide with an Arduino board. He built it using an Arduino Nano, a motor driver, and 60 ultrasonic transducers that can levitate low-density objects in place indefinitely. The transducers send out 40 kHz waves that create standing waves. The interference pattern produces nulls that trap objects. High-pressure areas form below and above the object, locking it in the low-pressure area between them. The transducers produce two sound waves moving in opposing directions at the same frequency and amplitude. The effect is that the low-pressure areas don't appear to move, like whipping a rope from both ends and having the wave meet in the middle. Sound waves are oscillating at high and low pressures. By creating a sound wave that doesn't move forward (a standing wave), you create areas of constant pressure. 🔉 Objects get trapped in the null points between high-pressure zones. The craziest part is that this was made more than 7 years ago! DIY levitation 😮‍💨 Reddit link: ~~ ♻️ Join the weekly robotics newsletter, and never miss any news →

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Arduino-based radar system is a smart project that detects your surroundings with sound waves. Usually it's done using an ultrasonic sensor and a servo motor.🛜

Arduino-based radar system is a smart project that detects your surroundings with sound waves. Usually it's done using an ultrasonic sensor and a servo motor.🛜

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You don’t need expensive hardware to build something that feels like real robotics. An Arduino, a servo, and an ultrasonic sensor can scan space and turn echoes into a simple radar view. It sweeps, measures distance, and visualizes it in real time. Cheap, simple, and a solid way to understand how machines sense the world. Limits show up fast, which is where better sensing and smarter software come in. Original build by SunFounder —— Weekly robotics and AI insights. Subscribe free:

You don’t need expensive hardware to build something that feels like real robotics. An Arduino, a servo, and an ultrasonic sensor can scan space and turn echoes into a simple radar view. It sweeps, measures distance, and visualizes it in real time. Cheap, simple, and a solid way to understand how machines sense the world. Limits show up fast, which is where better sensing and smarter software come in. Original build by SunFounder —— Weekly robotics and AI insights. Subscribe free:

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Your new go-to tool from blink to think! The Arduino UNO Q combines a Qualcomm Dragonwing™ QRB2210 microprocessor and an STM32U585 microcontroller, making it the perfect dual-brain platform for your next innovation. Buy now:

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A game of shades : and an unbelievably delicate challenge. In ink painting, black actually comes in different “weights.” Painters change how thick, thin, dry, or wet the ink is to create depth and texture. Traditionally there are five main shades people talk about: burnt, dense, heavy, light, and clear. It’s all the same ink , just handled differently ,and that’s how they make a whole world of tones without using any color at all.

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Hal Labs the type of company to take a 13-second sound clip of Dedede exploding, put it in an official soundtrack and name that shit "9.3 Billion in Anguish" simply because they can

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AI in robotics gets all the attention right now, but sometimes the most interesting work is very practical. Viet built a small vision system that counts potatoes on a conveyor belt. No giant dataset. No huge model. Just a clear problem and a smart setup. He used Ultralytics’ ObjectCounter, trained a tiny YOLO11 nano model, and because there was no potato dataset, he annotated a single frame with SAM 2 and trained from that. One frame. Still works across the whole video. It is a good reminder that useful AI in industry often looks like this. Focused. Lightweight. Solves a real task. If you work in manufacturing or robotics, these small systems are usually the fastest wins. They save time, reduce errors, and do not need massive infrastructure. Nice work, Viet. His projects: —- Weekly robotics and AI insights. Subscribe free:

AI in robotics gets all the attention right now, but sometimes the most interesting work is very practical. Viet built a small vision system that counts potatoes on a conveyor belt. No giant dataset. No huge model. Just a clear problem and a smart setup. He used Ultralytics’ ObjectCounter, trained a tiny YOLO11 nano model, and because there was no potato dataset, he annotated a single frame with SAM 2 and trained from that. One frame. Still works across the whole video. It is a good reminder that useful AI in industry often looks like this. Focused. Lightweight. Solves a real task. If you work in manufacturing or robotics, these small systems are usually the fastest wins. They save time, reduce errors, and do not need massive infrastructure. Nice work, Viet. His projects: —- Weekly robotics and AI insights. Subscribe free:

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These birds have an instinct to collect paper stripes and put them in their tail because in the wild they use any material they can get to build their nests. This lingers on in pet birds. And this one teaches a young bird how to do it.

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"Explosion in Kharkiv" or something along those lines is the most frequent post I make. I've probably made a thousand of them by now, if not more. Air raid alerts are so frequent here that I usually don't even post about them. They can last for days, and the citizens of Kharkiv are forced to disregard them. Or we can have twelve of them in a day, and we will also be forced to disregard them. I often see online how central or western Ukraine complains about the alerts, and oh, how much I would give to have an actual solid warning about an attack like them. But "explosions in Kharkiv" always arrive unexpectedly. How surreal it is that we are forced to live like this. How horrific it is that thousands of bombs, missiles, and drones fall on a major city in Europe daily, and all the major press and political figures just pretend it doesn't happen. Because if they admit that it happens and they just watch it year after year, then what kind of people are they? Do they care at all?

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23,789 görüntüleme • 1 yıl önce

BREAKING: Another video of the Serbian police using a LRAD sonic cannon against the student protesters in Belgrade while they were holding their 15 minutes of silence. LRAD is an acoustic weapon that fires a targeted "beam" of sound at very high volume, up to 160 dB 🇷🇸

BREAKING: Another video of the Serbian police using a LRAD sonic cannon against the student protesters in Belgrade while they were holding their 15 minutes of silence. LRAD is an acoustic weapon that fires a targeted "beam" of sound at very high volume, up to 160 dB 🇷🇸

Visegrád 24

424,517 görüntüleme • 1 yıl önce

Leftists Try To Instigate ICE Agents In Maine - 1/21/26 During detainment, a handful of anti-ICE confront immigration enforcement. They demand to see the warrant and demand them to answer. These fools get ignored and instead an agent just films them back silently. Without instigators on the Left, there would no problems.

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TheUnquirer

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sadernoheart

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