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What If One Motor Could Move an Entire Robot Leg? Quaddle takes a very different approach to quadruped mechanics. Instead of using separate motors for the hip and knee, each leg uses a single servo with a mechanical linkage that drives both joints. That cuts the actuator count to... just four servos for the whole robot. The interesting part is that the mechanical design does more of the work normally handled by extra actuators. With the right linkage and gait timing, Quaddle can walk, move sideways and spin in place. Less motors. Less wiring. Less weight. More mechanical engineering. Also, the hardware and motion system can be hacked and experimented with. Would you try designing your own leg mechanism around this idea?show more

Praveen Kumar Verma

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12,229 views • 9 days ago •via X (Twitter)

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25 Grams of Hardware. 4 Motors. One Flying ESP32-S3. ESP-FLY is a tiny DIY quadcopter built around the XIAO ESP32-S3. It uses an MPU6050 IMU for motion sensing, four coreless motors, and supports Wi-Fi and ESP-NOW for control. The interesting part is that the flight controller is programmable, so you can experiment with sensor fusion, attitude control, PWM motor control and wireless communication. About 25g with the battery, yet it can actually fly.

25 Grams of Hardware. 4 Motors. One Flying ESP32-S3. ESP-FLY is a tiny DIY quadcopter built around the XIAO ESP32-S3. It uses an MPU6050 IMU for motion sensing, four coreless motors, and supports Wi-Fi and ESP-NOW for control. The interesting part is that the flight controller is programmable, so you can experiment with sensor fusion, attitude control, PWM motor control and wireless communication. About 25g with the battery, yet it can actually fly.

Praveen Kumar Verma

23,757 views • 20 days ago

Your chair is quietly wrecking your hips. Most adults sit ~10 hours a day. That parks the psoas and rectus femoris in chronic flexion. So: 1. They shorten. 2. The pelvis tips forward. 3. The lumbar spine takes the load. 4. The glutes go quiet. Walking lunges break it on every step. The trailing leg forces full hip extension (the position sitting never allows). That lengthens the flexors under load and wakes the glutes. The front leg has to decelerate and stabilize, so gluteus medius and deep core fire to stop pelvic drop. Left and right sides can’t hide anymore. Single-leg control isn’t a gym flex. Inability to hold a 10-second one-leg stand is linked to higher mortality risk. Balance declines with age faster than grip or gait. The Action Plan: If you sit most of the day, 2–3 sets of 8–10 walking lunges after work is mechanical medicine. Slow. Full extension on the back leg. Tall torso. Can you stand on one leg for 10 seconds without wobbling? Try it and tell me. #HipHealth #Posture

Your chair is quietly wrecking your hips. Most adults sit ~10 hours a day. That parks the psoas and rectus femoris in chronic flexion. So: 1. They shorten. 2. The pelvis tips forward. 3. The lumbar spine takes the load. 4. The glutes go quiet. Walking lunges break it on every step. The trailing leg forces full hip extension (the position sitting never allows). That lengthens the flexors under load and wakes the glutes. The front leg has to decelerate and stabilize, so gluteus medius and deep core fire to stop pelvic drop. Left and right sides can’t hide anymore. Single-leg control isn’t a gym flex. Inability to hold a 10-second one-leg stand is linked to higher mortality risk. Balance declines with age faster than grip or gait. The Action Plan: If you sit most of the day, 2–3 sets of 8–10 walking lunges after work is mechanical medicine. Slow. Full extension on the back leg. Tall torso. Can you stand on one leg for 10 seconds without wobbling? Try it and tell me. #HipHealth #Posture

Kristie Leong M.D.

14,812 views • 14 days ago

LEONARDO, also called LEO, was built by researchers at Caltech’s Center for Autonomous Systems and Technologies. Its full name means LEgs ONboARD drOne. The idea is simple but unusual: • Build a small biped robot • Give it drone-style thrust • Use the legs for ground contact • Use the propellers for balance and lift • Combine walking, hopping and flying in one system LEO is basically a hybrid between a walking robot and a flying drone. How it was built: • Two lightweight legs • Three actuated joints in each leg • Four propeller thrusters near the shoulders • A lightweight body • Leg motors for ground movement • Propellers for balance, lift and aerial control • Real-time control software that synchronizes the legs and propellers How it walks: • The legs move the robot forward • The feet touch the ground like a normal biped • The propellers constantly correct balance from above • The robot can stay upright even in unstable situations • The thrust reduces the risk of falling during difficult motions How it flies: • The legs stop being the main locomotion system • The four propellers generate lift • The robot behaves more like a drone • It can take off, fly over obstacles and land back on its legs What makes it different: • It does not walk like a normal humanoid • It does not fly like a normal drone • It blends both systems • The legs handle contact with the ground • The propellers act like fast stabilizers • The control system decides how much help comes from the legs and how much comes from thrust That is why LEO can: • Walk • Hop • Fly over obstacles • Ride a skateboard • Balance on a slackline The key idea is walking with aerial stabilization.

LEONARDO, also called LEO, was built by researchers at Caltech’s Center for Autonomous Systems and Technologies. Its full name means LEgs ONboARD drOne. The idea is simple but unusual: • Build a small biped robot • Give it drone-style thrust • Use the legs for ground contact • Use the propellers for balance and lift • Combine walking, hopping and flying in one system LEO is basically a hybrid between a walking robot and a flying drone. How it was built: • Two lightweight legs • Three actuated joints in each leg • Four propeller thrusters near the shoulders • A lightweight body • Leg motors for ground movement • Propellers for balance, lift and aerial control • Real-time control software that synchronizes the legs and propellers How it walks: • The legs move the robot forward • The feet touch the ground like a normal biped • The propellers constantly correct balance from above • The robot can stay upright even in unstable situations • The thrust reduces the risk of falling during difficult motions How it flies: • The legs stop being the main locomotion system • The four propellers generate lift • The robot behaves more like a drone • It can take off, fly over obstacles and land back on its legs What makes it different: • It does not walk like a normal humanoid • It does not fly like a normal drone • It blends both systems • The legs handle contact with the ground • The propellers act like fast stabilizers • The control system decides how much help comes from the legs and how much comes from thrust That is why LEO can: • Walk • Hop • Fly over obstacles • Ride a skateboard • Balance on a slackline The key idea is walking with aerial stabilization.

Techniahqrobot | humanoid robots

135,515 views • 2 months ago

We're open-sourcing Asimov Legs, a bipedal robotic system. It's a complete leg design with 6 DOF per leg, RSU ankle architecture, passive toe joints. Built with off-the-shelf components and compatible with MJF 3D printing. What we're open-sourcing & sharing: - Full mechanical CAD (STEP files) - Actuators list - XML files for simulation (MuJoCo) Repo for all: If you want to support the project, visit for partnership DM us.

We're open-sourcing Asimov Legs, a bipedal robotic system. It's a complete leg design with 6 DOF per leg, RSU ankle architecture, passive toe joints. Built with off-the-shelf components and compatible with MJF 3D printing. What we're open-sourcing & sharing: - Full mechanical CAD (STEP files) - Actuators list - XML files for simulation (MuJoCo) Repo for all: If you want to support the project, visit for partnership DM us.

Asimov

23,824 views • 8 months ago

as a former professional skater, I can say the technique here immediately reminds me of upper body positioning in speed skating. specifically the way the arms move across the body while the hips and torso rotate underneath them In skating that goofy motion helps manage the lateral shift of the center of mass and counter the angular momentum created by each leg it’s interesting is that the robot wasn’t explicitly taught to run this way the gait emerged through reinforcement learning as it searched for a faster, more stable and less thermally demanding way to move. yet it is not copying a speed skater It seems like two very different systems arrived at a similar solution to the same basic dynamics problem Convergent biomechanics ™ lol video is of an old competitor of mine who is currently crushing everyone in skating at the moment GUZMAN

as a former professional skater, I can say the technique here immediately reminds me of upper body positioning in speed skating. specifically the way the arms move across the body while the hips and torso rotate underneath them In skating that goofy motion helps manage the lateral shift of the center of mass and counter the angular momentum created by each leg it’s interesting is that the robot wasn’t explicitly taught to run this way the gait emerged through reinforcement learning as it searched for a faster, more stable and less thermally demanding way to move. yet it is not copying a speed skater It seems like two very different systems arrived at a similar solution to the same basic dynamics problem Convergent biomechanics ™ lol video is of an old competitor of mine who is currently crushing everyone in skating at the moment GUZMAN

Phoenix𝕏

65,286 views • 1 month ago

Can we make Transformers better and more efficient for robot learning? Excited to introduce Body Transformer (BoT), an architecture that leverages robot embodiment in the attention mechanism, by treating it as a graph of sensors and actuators.

Can we make Transformers better and more efficient for robot learning? Excited to introduce Body Transformer (BoT), an architecture that leverages robot embodiment in the attention mechanism, by treating it as a graph of sensors and actuators.

Carlo Sferrazza

60,714 views • 2 years ago

What an amazing opportunity for my son Will to work with one of the greatest ever Leg Spin bowlers and now The Best Leg Spin Bowling Coach in the world - Stuart MacGill It was such a pleasure and honour to be there to hear the incredibly simple way that he explains the art of leg spin bowling, the hardest skill in cricket. If there are any budding leg spinners out there, you need to reach out to Stu to get started, as you won’t get anyone better in the world!!

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Shane Watson

154,000 views • 1 year ago

This might be one of the most under-trained muscles in your whole lower leg. It's called the tibialis anterior, it runs down the front of your shin, and its main job is to lift the front of your foot up when you walk. At the lowest point of your step, your toes may only clear the floor by about a centimetre. Also called, minimum toe clearance in gait studies. This muscle is a big part of what keeps your toes off the ground. So when it gets weak, especially with age, your toes can scuff the floor and you trip more easily. That slow, foot-dragging walk you see in a lot of older people often comes down to weak shins. It's also what helps lower your foot down gently after your heel lands, instead of letting it slap flat. And because most people train their calves far more than the front of the leg, that imbalance can contribute to shin splints. A go-to for runners Also shows up in knee rehab Try this wall-supported version. You can do it anywhere.

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Dr Neha Chawla || FreeGym

31,450 views • 2 months ago

Pouring one out for the poor gymrats that are still wasting their gains by doing shoulder presses with dumbbells. When they could it with more weight, more tension, and less faff, by just using a machine instead.

Pouring one out for the poor gymrats that are still wasting their gains by doing shoulder presses with dumbbells. When they could it with more weight, more tension, and less faff, by just using a machine instead.

Sama Hoole

191,087 views • 9 months ago

Design Engineering Tip: Add friction at the end of a scroll interaction. When users reach the edge of a scrollable area, the movement should not just stop instantly. A subtle resistance, bounce, or slowdown can make the interface feel more physical and less mechanical. It helps users understand that they reached a boundary without needing extra labels or visual indicators. Used carefully, this can make scrolling feel more natural and closer to how objects behave in the real world.

Design Engineering Tip: Add friction at the end of a scroll interaction. When users reach the edge of a scrollable area, the movement should not just stop instantly. A subtle resistance, bounce, or slowdown can make the interface feel more physical and less mechanical. It helps users understand that they reached a boundary without needing extra labels or visual indicators. Used carefully, this can make scrolling feel more natural and closer to how objects behave in the real world.

Gabriel

25,730 views • 2 months ago

Don't you have a haptic chair for VR gaming? Don't worry, your friendly humanoid robot can help you with that! In a recent research paper from the University of Colorado, researchers experimented with using a humanoid robot to literally grab your chair and move it during VR racing sessions to make the game more realistic. And from the users' feedback, it seemed to work. I guess they took inspiration from those viral videos, where in some low-budget arcades, the owner literally moved the station with his own hands. I can't wait for the fail videos caused by this technology... Full video is available here: #VirtualReality #VR #technology

Don't you have a haptic chair for VR gaming? Don't worry, your friendly humanoid robot can help you with that! In a recent research paper from the University of Colorado, researchers experimented with using a humanoid robot to literally grab your chair and move it during VR racing sessions to make the game more realistic. And from the users' feedback, it seemed to work. I guess they took inspiration from those viral videos, where in some low-budget arcades, the owner literally moved the station with his own hands. I can't wait for the fail videos caused by this technology... Full video is available here: #VirtualReality #VR #technology

TonyVT SkarredGhost

80,441 views • 5 months ago

Cornell engineers have developed a robotic collective that behaves less like a machine and more like a material that flows, reshapes, and adapts to its environment without centralized control. The system, called the Cross-Link Collective, consists of dozens of small robots that have limited mobility individually, but together exhibit coordinated and sustained motion. The research, published May 20 in Science Robotics, demonstrates a robotic system that resembles soft matter, continuously deforming and reorganizing as it moves, driven by what researchers call mechanical intelligence. Cornell Duffield College of Engineering Cornell Research & Innovation Read more:

Cornell engineers have developed a robotic collective that behaves less like a machine and more like a material that flows, reshapes, and adapts to its environment without centralized control. The system, called the Cross-Link Collective, consists of dozens of small robots that have limited mobility individually, but together exhibit coordinated and sustained motion. The research, published May 20 in Science Robotics, demonstrates a robotic system that resembles soft matter, continuously deforming and reorganizing as it moves, driven by what researchers call mechanical intelligence. Cornell Duffield College of Engineering Cornell Research & Innovation Read more:

Cornell University

74,155 views • 4 months ago

The Pelvic Whip👇 A Big League pitcher’s pelvis can rotates faster that 900 Degrees per second To maximize that speed with proper timing, many of our athletes and coaches like the feeling of keeping the pelvis closed THEN Exploding! BUT, if the front side groin is tight, the lead leg will just drag the pelvis open which is a much slower version of pelvic rotation To get around this, some guys land in a valgus position (Knee Caved in) on the front leg since you don’t need full Adductor Range of Motion to do this. And Some step across body which can also work around this. This Test / Exercise To see how your groin affects your pelvis, hold your knee out while performing this exercise. You will know immediately if this affects you or not! 👊

The Pelvic Whip👇 A Big League pitcher’s pelvis can rotates faster that 900 Degrees per second To maximize that speed with proper timing, many of our athletes and coaches like the feeling of keeping the pelvis closed THEN Exploding! BUT, if the front side groin is tight, the lead leg will just drag the pelvis open which is a much slower version of pelvic rotation To get around this, some guys land in a valgus position (Knee Caved in) on the front leg since you don’t need full Adductor Range of Motion to do this. And Some step across body which can also work around this. This Test / Exercise To see how your groin affects your pelvis, hold your knee out while performing this exercise. You will know immediately if this affects you or not! 👊

Armored Heat

14,598 views • 5 months ago

You point at the mess and say "clean this." That is the whole manual. Matic just shipped this. No app, no map to draw, no menu. The robot listens in more than 70 languages, watches where your hand points, and drives to that spot. Say "follow me" and it trails you into the next room. All of it runs on the robot itself, so it works with the WiFi off. Nine years of work for one thing: a machine you talk to like a dog that actually listens. Matic Robots

You point at the mess and say "clean this." That is the whole manual. Matic just shipped this. No app, no map to draw, no menu. The robot listens in more than 70 languages, watches where your hand points, and drives to that spot. Say "follow me" and it trails you into the next room. All of it runs on the robot itself, so it works with the WiFi off. Nine years of work for one thing: a machine you talk to like a dog that actually listens. Matic Robots

Chubby♨️

495,322 views • 1 month ago

The Master Mystery, 1918 a silent film serial with 15 parts starring Harry Houdini. The film is as a very early depiction of a robot, which predates Metropolis and The Mechanical Man in 1921. Houdini portrays an agent of the US justice department named Quentin Locke. Locke is assigned to investigate a criminal cartel that is defended by a mysterious and powerful robot called "Q the Automaton".

The Master Mystery, 1918 a silent film serial with 15 parts starring Harry Houdini. The film is as a very early depiction of a robot, which predates Metropolis and The Mechanical Man in 1921. Houdini portrays an agent of the US justice department named Quentin Locke. Locke is assigned to investigate a criminal cartel that is defended by a mysterious and powerful robot called "Q the Automaton".

Brian Roemmele

17,968 views • 4 months ago

OWLMAXXING for the Neck One of the most Underrated muscle groups to train: the neck supports the brain, and being strong in it means less neck pain, better athletic movement, and a thicker neck enhancing aesthetics. I like to OWLMAXX with this simple dumbbell rotation exercise done on both sides of the head, the front of the head, and the back of the head as well. The aim of the game is to take the neck through extended ranges of motion in a controlled manner with added weight. You can also use a small weight plate if you're just starting with this exercise, or just the weight of the head itself hanging off the bench is a great place to start.

OWLMAXXING for the Neck One of the most Underrated muscle groups to train: the neck supports the brain, and being strong in it means less neck pain, better athletic movement, and a thicker neck enhancing aesthetics. I like to OWLMAXX with this simple dumbbell rotation exercise done on both sides of the head, the front of the head, and the back of the head as well. The aim of the game is to take the neck through extended ranges of motion in a controlled manner with added weight. You can also use a small weight plate if you're just starting with this exercise, or just the weight of the head itself hanging off the bench is a great place to start.

⚡️🌞 Sol Brah 🌞🐬

63,915 views • 4 months ago

Raptor 3 got better by becoming less complicated. Rocket engineering gets interesting when the upgrade is deleting a lot of the stuff. SpaceX stripped out secondary lines, purge systems, wiring, sensors, avionics boxes, and spark igniters, then replaced many bolted flanges with welded joints. That means less weight, fewer leak paths, and fewer things sitting there waiting to fail. The hard part was making “simpler” actually work. SpaceX / Writer: Annette, Grok Imagine Designer: Janné

Raptor 3 got better by becoming less complicated. Rocket engineering gets interesting when the upgrade is deleting a lot of the stuff. SpaceX stripped out secondary lines, purge systems, wiring, sensors, avionics boxes, and spark igniters, then replaced many bolted flanges with welded joints. That means less weight, fewer leak paths, and fewer things sitting there waiting to fail. The hard part was making “simpler” actually work. SpaceX / Writer: Annette, Grok Imagine Designer: Janné

Mario Nawfal

51,445 views • 17 days ago

So… the 1X NEO home robot is not actually autonomous. Behind the scenes, it’ll often be teleoperated by humans, meaning someone, somewhere, could literally remote-control a robot inside your living room. I wanted the dawn of embodied AI. Instead, I’m apparently paying $499/month for a robot avatar with a human pilot. It’s impressive tech. But also… kind of dystopian? A robot that looks alive, yet secretly puppeteered, the uncanny valley just got a new basement level. Feels less like the “post-labor future,” and more like we just outsourced physical presence itself.

VraserX e/acc

724,207 views • 11 months ago

$40 hours of human work. That’s what this humanoid could save every month! A construction company is already testing a Unitree G1 on a real job site, using the robot for site inspections, 360° imaging, data collection and progress monitoring. The robot starts at around $13,500, while the company says its deployment can save roughly 40 hours of work every month. That adds up to around 480 hours a year from a machine that costs a fraction of traditional industrial equipment. The interesting part is that this isn't about replacing an entire construction worker. It's about removing hundreds of repetitive hours from the workflow, including walking inspection routes, documenting progress and collecting information across the site. Humans can then spend their time on decisions and tasks that actually require them. This is where humanoid robots become economically interesting. Construction sites are already designed around human movement, so a robot with two arms, two legs and a human-sized body can potentially work in the same spaces without rebuilding the entire environment. Every additional task it learns turns those same hardware costs into more productive hours. And the economics get even more interesting as prices fall and production scales. A robot that saves 480 hours per year doesn't need to be perfect or replace a full-time employee to justify its existence. It just needs to reliably take over the boring, repetitive work that companies are already paying humans to do. 480 hours saved. Thousands of dollars in hardware. One construction site. This is how humanoids will enter the workforce, not by replacing everyone overnight, but by quietly taking over the hours nobody wants to spend.$

40 hours of human work. That’s what this humanoid could save every month! A construction company is already testing a Unitree G1 on a real job site, using the robot for site inspections, 360° imaging, data collection and progress monitoring. The robot starts at around $13,500, while the company says its deployment can save roughly 40 hours of work every month. That adds up to around 480 hours a year from a machine that costs a fraction of traditional industrial equipment. The interesting part is that this isn't about replacing an entire construction worker. It's about removing hundreds of repetitive hours from the workflow, including walking inspection routes, documenting progress and collecting information across the site. Humans can then spend their time on decisions and tasks that actually require them. This is where humanoid robots become economically interesting. Construction sites are already designed around human movement, so a robot with two arms, two legs and a human-sized body can potentially work in the same spaces without rebuilding the entire environment. Every additional task it learns turns those same hardware costs into more productive hours. And the economics get even more interesting as prices fall and production scales. A robot that saves 480 hours per year doesn't need to be perfect or replace a full-time employee to justify its existence. It just needs to reliably take over the boring, repetitive work that companies are already paying humans to do. 480 hours saved. Thousands of dollars in hardware. One construction site. This is how humanoids will enter the workforce, not by replacing everyone overnight, but by quietly taking over the hours nobody wants to spend.

Future Memo

18,925 views • 12 days ago