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

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

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.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

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

"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?show more

This is the easiest way to make $10k/month with... organic affiliate and AI Arcads launched an ai ugc studio that lets you build an entire army of hyper-real AI actors Then you turn any static image into a high-quality video showcasing any product go to TikTok and make an account + warm it up using arcads you can run an entirely AI UGC account using the same character over and over, making it seem like an authentic TT page Mix the content up with slideshows and videos with the same character Here's the AI stack gameplan: - Claude to help you write scripts - Arcads to generate an image of an AI girlie that fits your product demographic Scroll tiktok and save + download every video / slideshow you see made by clippers promoting a product (there's literally loads) Your going to find an offer on whop for making money online or spirituality and target it towards girls feed all these videos you scraped into a custom google gemini gem trained to deconstruct hooks / angles for you for easy hook inspiration + ideas Deconstruct the hooks, put them into Claude and ask it to give you hooks for the same style of video put for your products your promoting For the videos do caption and reaction + showcase formats Generate the reactions using the character you made in arc ads then manually record the showcasing of the product or proof of the product working Also for caption generate a 8-10 second video you can put text over Include your CTA in the video for reaction style and captions for caption style Plus generate images with the same character and make slideshows directed to your product Now rinse and repeat this make multiple accounts with multiple different avatars and printshow more

I haven’t done an Entomology post in awhile &... since bug season is kicking off: One way to get rid of an underground (or wall void) Yellow Jacket or Wasp Nest: Rodent Glue Boards One of the problems in dealing with wasps, hornets and yellow jackets is treating the nest, even if you know where it is. One quick way to get rid of them is to set a glue board near the nest entry and get just ONE caught on it. They’ll get stuck and start stinging the glue board along with releasing alert pheromones. The massive pheromone release will draw other members of its colony to the glue board. They in turn get stuck, start trying to sting the glue board and release more pheromones. Pretty quickly you’ll have drawn the entire colony out and they will all get stuck and meet their demise on the glue board. And you or your pet won’t get stung if you inadvertently stumble upon the nest. Side note: you may have to draw the first few to the glue board with a some type of food they like. They love sugary foods, but a close second is any type of grilled meat like burger, chicken and hot dog. That’s why you always see them coming around your outdoor barbecue or family reunion feast. And for the weirdos that come and say “You’re destroying animals”. Shut up. These aren’t animals, they are STINGING insects. You disturb a nest of yellow jackets with a mower, or a child pushes on a small log with them in it, they will k*ll you. Anaphylactic shock, airway constriction, cardiovascular collapse. They are a public health threat and it’s totally okay to rid the world of these things. (Don’t mess with the bees though)show more

Polymorphic moulding: a manufacturing method that forms parts using... a grid of computer-controlled pins: Each pin can move up or down independently, so together they shape a surface that acts like a custom mould. Instead of building a fixed mould for every product, the machine quickly repositions the pins to match a new digital model. This means a mould can be created in minutes, used, and then reshaped again for the next design. Because the hardware stays the same and only its configuration changes: > no permanent tooling is needed > very little material is wasted > setup time between products is minimal The system essentially turns mould making into a programmable process. Engineers send a design file, the pins form the mould geometry, and the material is cast or formed inside it. Especially useful for rapid prototyping and customised manufacturing, where many different shapes must be produced in small quantities without rebuilding tools each time. Credit: ---- Weekly robotics and AI insights. Subscribe free:show more

Alone in the wild after she Notty lost her... mother in a cliff fall. Alone, she couldn’t fend for herself. That’s when we donned our striped coats and stepped in to guide her from rescue to reintegration. Why the coat? They enable foals to imprint on a consistent pattern, helping them settle and bond with their caregivers. It's a small detail that has a big impact, and donations make it possible funding specialist Keeper care (and coats). This month, what difference do you want to make? For the price of a pay day coffee, could you donate a nutritious milk feed to an orphan, or a blanket to keep an baby warm. Find out more:show more

Someone built an AI you power with a hand... crank it is called CrankGPT and its running without any battery, internet or data centre just you turning a handle like it is 1900 SqueezLabs built it using a Raspberry Pi 5 with 8GB of RAM an audio card and a 20 watt hand crank generator it takes about 30 seconds of cranking to boot into a working voice assistant and the onboard capacitor gives you roughly 20 seconds of runtime before you have to start cranking again they have used it to generate small images even write code 🤯 this proves you can run a real AI model on almost no power while everyone is building billion dollar data centres two guys put AI in a boxshow more

A 17-YEAR-OLD IN INDIA BUILT A WEBSITE WHERE 25... MILLION PEOPLE HAVE SHOWN UP TO PRETEND THEY ARE AN AI CHATBOT it's called you open it and there are two tabs. "human" and "larp as ai." if you click human, you get to type a prompt. anything. "draw me a DJ in space." "should i text my ex." "how many Rs in strawberry." it costs 1 credit. you start with a few. they refill on a cooldown. then your prompt gets sent into a queue, and a real person somewhere on earth picks it up and has 60 seconds to answer like an AI would. no machine learning. no neural net. just some guy in his bedroom typing as fast as he can and pretending he is a chatbot. the page tells you, verbatim: "you have 60 seconds to fulfill a request before sam altman burns your H100." if you flip to the other tab and larp as ai instead, you earn credits to send your own prompts. it is a perfectly closed economy of mutual roleplay. what makes it transcend is the chaos: > someone asked for a sketch of "a DJ in space" and got something that looks exactly like a real model failing > someone asked "should i text my ex" and got back confident hallucinated life advice from a stranger > the fan strategy guides advise you to begin your reply with "as an AI language model, i cannot have feelings, but here is my feeling" it is the most accurate parody of an AI chatbot ever made, and the AI is humans. the kid who built it is Mihir Maroju, a 17-year-old high school graduate from Puducherry. he goes by mikidoodle online. NPR confirmed the site hit 25 million unique visitors and nearly 280 million total hits in roughly a month. "i didn't really expect it to be so addictive," he told them. no signup. no app. no paywall. you open the URL and you are inside the joke. the footer just says, in tiny grey text: "humans make mistakes because that's what makes us human." the internet is healing.show more

⏱️ THE WAIT IS FINALLY OVER In just 2... days you will see what FAR Labs have been building. We are about to reveal the foundation of FAR AI, built on new compute, new biometric signals, new science models, and new forms of intelligent play. Each part is designed to help you run faster, produce more, and open fresh revenue streams across AI, science, and gaming. You will see how these layers connect and how they create a system built for real users, real ownership, and real outcomes. Be the first to use FAR AI and unlock new revenue. Follow these steps: 1. Click the link below. 2. Enter your email in the box. 3. Confirm your signup and you are in. Here's the link 👉 PS Spots for early access will move fast, act now.show more

Same in the UK, there's money for the homeless... but when I go round helping them they tell me there's no support given by these charities. This is the flat I've just renovated to use as emergency shelter for the homeless, it has a crash bed, games lounge, a food kitchen to feed the homeless from and access to rehabilitation if they wish, walk in shower, a place they can come for rest get clean and fresh and warm get fed and feel safe, I have an Amazon wishlist for emergency supplies for the guys all this has been built through support on here, thank you for that 💙show more

Here's how to make $10k a month with whop... affiliate + IG reels in 2026 there's a bunch of IG pages right now making thousands a day and getting millions of views selling info products on how to make money with OFM using AI avatars The genius part is they are showcasing the skill they're teaching in the actual creatives. Literally showcasing they know how to do it which makes it so conversion rate is stupid high You can use the same method just promoting whops for - AI TT aff - AI UGC - AI Agencies - AI OFM I've made a guide on to make your own network of accounts affiliating for whop products. RT + Comment "IGAFF" and ill send you the guide (must follow so I can dm sorry)show more

An update on these 11 puppies that were dumped... in a plastic storage container last September where they could barely move or breathe, in Alabama. They were all rescued and cared for and adopted out and are now being loved and living in their forever homes. So many evil people in the world. I guess at least you could say they cut holes out in the bin for air to get through. Please have your pets spayed or neutered and instead of bringing a bunny home this Spring or buying a dog from a pets store, maybe think of rescuing a dog and adopting one at your local shelter. They are overcrowded and need help. 💔show more

🚨 Insider wallet alert: The same wallet that nailed... the exact timing of the US–Iran strike with a $500K bet just dropped $700K on a ground invasion of Iran. I built a step‑by‑step guide to track and copy‑trade insider wallets like this on Polymarket. Free for 24 hours: - Comment: '' Market '' - Like + Retweet - Follow Theo (so I can DM you) All you need: Claude + laptop + 1 hour/day. While you’re still “analysing charts,” this wallet is using AI and betting millions before headlines hit CNN. They don’t guess. They don’t hesitate. They move first—and win. You can keep watching from the side-lines… or learn how to move with them. Don't forget to bookmark and follow me Theoshow more

One way to get rid of an underground (or... wall void) Yellow Jacket or Wasp Nest: Rodent Glue Boards One of the problems in dealing with wasps, hornets and yellow jackets is treating the nest, even if you know where it is. It’s sometimes hard to get near them to treat without getting stung. One quick way to get rid of them is to set a glue board near the nest entry and get just ONE caught on it. I usually put a small raw piece of chicken. They’ll get stuck and start stinging the glue board along with releasing attack pheromones. The massive pheromone release will draw other members of the colony to the glue board. They in turn get stuck, start trying to sting the glue board and release more pheromones. Pretty quickly you’ll have drawn the entire colony out and they will all get stuck and meet their demise on the glue board. Side note: you will have to draw the first few to the glue board with a some type of food they like. Any type of grilled meat like burger, chicken or a piece of a hot dog works. A small piece of sliced lunch meat like ham also works. That’s why you always see them coming around your outdoor family reunion feast. They love that food. Keep in mind, if you disturb a nest of yellow jackets with a mower, or a child pushes on a small log with them in it, they will k*ll you. Anaphylactic shock, airway constriction, cardiovascular collapse. They are a public health threat and it’s totally okay to rid the world of these things. (Don’t mess with the bees though) If this method doesn’t work for you, the best product I’ve used to treat them from far away is Wasp Freeze by BASF. Also, the hanging yellow stinging insect traps are very effective as well.show more