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Magnetic Coupling – Torque Without Contact! ⚡
Tutorials Colin 2026-08-17 16:48 54
No mechanical connection, no wear, no leakage – magnetic couplings transmit torque through rare‑earth magnets. This video explains how axial and radial types work, with real‑world examples: overload protection for crushers, slip correction ...
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I Built a 20,000 RPM Brushless Motor from Scratch – And It’s a BEAST! 🔥
Tutorials Colin 2026-08-14 16:56 53
Watch me build a powerful inner‑rotor brushless motor using 3D‑printed parts, neodymium magnets, and hand‑wound coils. It hits 20,000 RPM on a 12V battery, delivers serious torque, and sounds like a beast. A fun DIY project for any maker! ⚡...
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Single‑Phase vs Three‑Phase Power – What’s the Difference? ⚡
Tutorials Colin 2026-08-14 15:23 51
Single‑phase needs a neutral wire to complete the circuit. Three‑phase has three live wires 120° apart – balanced, it runs without neutral and powers big motors. Line voltage is 380V. Delta connection gives 380V across each winding; wye (st...
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Acoustic Helmholtz Resonators Enable Wireless Micro-Robots and Ultralight Flying Machines
Science Colin 2026-08-13 17:25 86
Summary: Researchers have transformed Helmholtz resonators into wireless acoustic actuators capable of powering miniature robots, autonomous boats, and ultralight flying machines. The breakthrough demonstrates a scalable approach to acousti...
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Six‑Axis Force Sensors Explained – The Secret to Precision & Control 🦾
Tutorials Colin 2026-08-13 16:20 63
What if your robot could feel force like a human? That’s exactly what a six‑axis force sensor does – it measures forces in X, Y, Z and torques about all three axes simultaneously. From automotive welding to robotic massage and precision ass...
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Z1 Thermodynamic AI Chip Completes Tape-Out, Advancing Probabilistic Computing
Science Colin 2026-08-13 11:48 71
Summary: In August 2026, a US AI computing startup announced that its Z1 Thermodynamic AI Chip had completed tape-out and entered manufacturing, marking a major step toward commercializing probabilistic computing for generative AI, robotics...
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Why Can't You Just Plug In a Brushless DC Motor? ⚡
Tutorials Colin 2026-08-13 09:29 52
Unlike simple DC motors, brushless DC motors won't spin when you connect them directly to a power supply – they need an electronic controller (ESC) to energize the windings in the correct sequence. Without electronic commutation, they j...
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Encoder vs. Potentiometer – What’s the Difference? (Teardown Inside) 🔧
Tutorials Colin 2026-08-11 17:15 53
Potentiometers and encoders may look similar, but they work completely differently. A potentiometer is a variable resistor – turning it changes resistance. An encoder contains two microswitches with staggered timing, producing digital open/...
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How to Make a 200F Supercapacitor from Copper Foil ⚡
Tutorials Colin 2026-08-11 16:18 88
I built a working supercapacitor from scratch using copper foil, activated carbon, and a simple sodium hydroxide electrolyte. Watch the full process – cutting and etching the foil, coating the electrode paste, rolling it up, and testing the...
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What Does a Robot Joint Drive Actually Do? (It’s Not Just Power!)
Tutorials Colin 2026-08-10 17:08 60
Think a robot drive is just a power supply? Think again. In this video, I break down the real job of a joint drive – turning high‑level commands into precise motor currents. Using the muscle‑nervous system analogy, we cover PWM, FOC (field‑...
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TSMC Develops 0.42nm Interface Engineering Technology for Next-Generation MoS₂ Transistors
Science Colin 2026-08-10 14:32 106
Summary：TSMC and National Yang Ming Chiao Tung University have developed an atomic-scale interface engineering technology that significantly improves single-layer MoS₂ transistors, opening a new pathway for sub-1nm semiconductor chips.A bre...
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Inductors Explained – How They Work & Why They Matter ⚡
Tutorials Colin 2026-08-07 17:26 55
Ever wonder what makes your phone charger so efficient? The inductor plays a starring role. In this video, we break down how inductors work – from storing magnetic field energy to resisting current changes (that's the Faraday‑Lenz law a...
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