Did you know you could make complex rotating gears with just magnets?! Watch to see how they work!

You see gears in action and they’re pretty easy to fathom. Metal wheels with interlocking teeth – rotate one wheel and the other wheel rotates in the opposite direction. Change the size of one wheel and it affects the speed at which the other wheel rotates. That’s basically how any simple gearbox on an automobile/bicycle works, translating rotations from a motor or your feet into rotating wheels. What happens when you replace the teeth with magnets? The video above wonderfully explains how gears can work without the mechanical action of interlocking teeth… in fact, they can work without even touching each other! These magnetic gears are pretty interesting and whimsical to look at!

DIY Magnetic Gears Video

YouTuber Magnetic Games shows how these gears work by putting them together from scratch. With 3 3D-printed wheels, the apparatus comes to life. One wheel holds 32 magnets (16 on each side), while the other houses 8 magnets (4 on each side). A third stationary wheel comes with bolts attached in each hole (helping the magnetic attraction pass from one wheel to another), and the apparatus is set up with the wheels on a common axle.

DIY Magnetic Gears Video

Rotating one wheel causes the other to turn in the opposite direction. The wheel with more magnets rotates at a slower pace, while the wheel with less magnets rotates with a higher speed (sort of like a larger gear and smaller gear). Obviously, the magnetic resistance isn’t comparable to the physical resistance of metal gears (you couldn’t really use these in a car or bicycle), but it DOES highlight a unique relationship between gears and magnets – something I knew nothing of until now! Plus, think about it this way, less physical contact = less wear-and-tear…

DIY Magnetic Gears Video

DIY Magnetic Gears Video

Via TheAwesomer

This smart assistant with a microphone is here to be an assistant content creator while you multitask!

A personal assistant is one gadget that has the potential to change life on an everyday scale. Right from giving you the information you asked for, playing music when you’re feeling blue, turning on the lights to a specific hue in your living room, or doing some 50 random tasks you have in a day! Meet Miko, the portable smart assistant that does more than its intended function. Created by industrial designer Vandana Bhanushali, the smart device doubles as a microphone for content creation!

Miko has cardioid microphones to pick up the voice in real-time and amplifies the sound. This means we can use the cheeky little gadget for anything from small rallies, office meetings, live performances to even karaoke nights with buddies. Don’t mistake Miko for any ordinary mic, as it can address a room filled with 60 people in crystal clear vocals or audio. Even better, the gadget can be used in one of the two modes – either as a handheld mic or as a detachable lavalier clip mic. There’s a pin on the base mic that keeps it charged, and this base mic is further amped via the main dock. So as soon as we pick up the mic from the dock, it sets into action the voice amplification. This function makes the little gadget perfect for podcast creators or video content makers. Plus, the attractive design is well thought out to appeal to the next-gen crowd.

When you don’t require the mic or amplification, the cute little speaker turns to the task of being a smart assistant. For sure, this gadget is something unique amongst the very predictable products out there. However, Miko has the potential to get past the concept stage, and content creators will already be eying this gadget with keenness.

Designer: Vandana Bhanushali