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 in those pockets and just hang there. If you put your hand in, the pattern breaks and they fall. Same principle labs use to move droplets or samples without touching them. Credit: u/williamlk5341 on r/arduino Based on an “Acoustic Levitator” Instructable guide: ---- Weekly robotics and AI insights. Subscribe free:show more

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 →show more

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 →show more

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.🛜show more

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:show more

We’re gearing up for the official pre-order launch of... the Arduino VENTUNO Q. An AI computer designed to run LLMs and Agentic AI workloads locally at the edge without compromising performance. ⚡️ Engineers, developers, and innovators can now build AI and robotics that sense, decide, and act on their own, instantly, offline, faster. 📅 Pre-orders open August 25. Sign up to get notified the moment pre-orders go live ➡️show more

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:show more

🌱 Smart Greenhouse Automation Using Arduino & ESP32! 🤖🌿... What if your greenhouse could monitor the soil and water your plants automatically — with no manual intervention? In this project, we’ve built a fully functional smart greenhouse using Arduino and ESP32, designed to automate plant irrigation based on real-time soil moisture levels. 🔧 Key Features: ✅ Automatic soil moisture monitoring ✅ Smart & intelligent irrigation control ✅ Arduino + ESP32 integration ✅ Fully functional DIY project ✅ Affordable and easy to scale 🚀 More Than Just a DIY Project This project demonstrates how IoT, embedded systems, and automation can transform traditional environments into intelligent systems. And the possibilities go far beyond a small greenhouse — the same concepts can be scaled for smart agriculture, precision farming, professional greenhouses, and industrial agricultural applications. 📚 Want to explore more ESP32 projects? 🔥 Check out these Top 6 ESP32 eBooks: 💬 Let’s hear from you! Have you worked on a Smart Home, IoT, or Smart Agriculture project before? Which development board or sensor do you enjoy working with the most — ESP32, Arduino, or something else? 👇 Share your experience and ideas in the comments! #Arduino #ESP32 #IoT #SmartHome #SmartAgriculture #SmartFarming #Greenhouse #DIY #EmbeddedSystems #Automation #PrecisionAgriculture #OpenSource #IoTProjectsshow more

🚨WILD: A vibe coder just built a SONAR app... with GPT-6 Astra, that lets you scroll your macbook WITHOUT touching it, entirely in less than an hour. The app emits ultrasonic audio and uses the Doppler effect to detect the user's hand position and control scrolling. Double-tap in the air switches between scrolling up and down and pinch and hold enables zoom and Credits: Emanuel Perezshow more

Who says microcontrollers are only for sensors and IoT?... One developer used an ESP32-S3 to create an entire collection of interactive generative art, proving that embedded systems can be a creative medium too. The projects use Adafruit Qualia ESP32-S3 with a 2.1" round TFT display and an IMU for motion-based interaction, while the artwork is first prototyped in JavaScript and then ported to C++ and deployed with the Arduino IDE. Along the way, you will learn about computer graphics, embedded displays, animation, IMU sensors, generative art, optimization, and real-time rendering on resource-constrained hardware.show more

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 canshow more

SOMEONE FROM TOKYO IS MAPPING BIRD LANGUAGE INTO REAL... DATA PATTERNS AND THE VISUALIZATION LOOKS LIKE A NEURAL NETWORK DREAMING Every bird sound - frequency, duration, amplitude and modulation - gets converted into 3D space coordinates and rendered as a cluster of colored points in real time through Deepen AI. A microphone captures the acoustic signal, FFT breaks it down into frequency components from 1 kHz to 8 kHz where most birds communicate, an ML model classifies the pattern and the mapped data hits a graph where each call type gets its own color and position in space. Birds have a vocal repertoire of 5 to 200+ unique signals depending on the species - and every signal carries different information about predators, food, territory and mates that humans simply can't hear. The same technology that decodes bird language detects anomalies in industrial machinery, cardiac rhythms and structural vibrations in buildings - he just trained it on nature first.show more

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:show more

BaBot: A Ball-Balancing Robotics Kit BaBot is a do-it-yourself... ball-balancing robot kit designed as a hands-on platform for learning robotics and control systems. It enables users to explore concepts such as PID control, sensors, actuators, and software integration through practical experimentation. The kit is intended for students, makers, and others interested in applied robotics without requiring a formal engineering background. Credit: Babot Project #arduino #ai #robotics #3dprint #engineeringshow more

Beo Grace by Bang & Olufsen SA is designed... around an entirely new acoustic architecture, perfected by our engineers to deliver sound with remarkable fidelity. At the heart is a 12 mm titanium driver, producing deeper bass with detailed highs. The Beo Grace isn’t just listening to music. It draws you in to the sound, until you hear it and feel it, in all its vibrancy and depth.show more

The Basics of Electromagnetic Waves: Electricity and magnetism can... sit still, like static electricity in your hair or a magnet stuck to your fridge. But when they move and change, they actually create each other. Together, they team up to form invisible ripples of energy called electromagnetic waves. Unlike ocean waves or sound waves, which need water or air to ripple through, electromagnetic waves don't need any material at all. They can easily travel through the completely empty vacuum of space. Maxwell's Big Idea: In the 1860s and 1870s, a Scottish scientist named James Clerk Maxwell figured out how this works. He wrote down the math showing exactly how electricity and magnetism link together to make these travelling waves. Today, scientists call his famous rules Maxwell's Equations. Hertz Proves It: Later, a German physicist named Heinrich Hertz took Maxwell's ideas and brought them to life. He was the first person to actually create and catch radio waves. To honour his work, we use the word hertz to measure how fast a wave vibrates (one cycle per second). Hertz's experiments proved two massive ideas: Radio waves are just invisible light: He showed that radio waves travel at the exact same speed as light, proving that they are actually a form of light we just can't see. Going wireless: He finally figured out how to detach these energy fields from physical wires, allowing the waves to fly freely through the air exactly as Maxwell had predicted.show more

Visualizing 6-axis motion in real time using Arduino + MPU6050