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Last Build Date: Tue, 22 Aug 2017 07:25:02 +0000

 



Electric Longboard with All-New Everythingskateboardnerdyjb

Tue, 22 Aug 2017 05:00:45 +0000

We love [lolomolo]’s Open Source electric longboard project. Why? Because he completely re-engineered everything while working on the project all through college. He tackled each challenge, be it electronic or mechanical as it came, and ended up making everything himself.

The 48″ x 13″ deck is a rather unique construction utilizing carbon fiber and Baltic birch. In testing the deck, [lolomol] found the deflection was less than an inch with 500 lbs. on the other end. He modified the Caliber II trucks to add four 2250W Turnigy Aerodrive brushless outrunners driving the wheels with the help of belts. The motors …read more

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A Detailed Guide for 3D Printing Enclosures37michaeluttmark

Tue, 22 Aug 2017 02:00:52 +0000

We’ve all have projects that are done, but not complete. They work, but they’re just a few PCBs wired together precariously on our desks. But fear not! A true maker’s blog has gifted us with a detailed step-by-step guide on how to make a project enclosure.

Having purchased an MP Select Mini 3D Printer, there was little to do but find something practical to print. What better than an enclosure for a recently finished Time/Date/Temperature display Arduino based device?

The enclosure in this guide, while quite nice, isn’t the main attraction here. The real feature is the incredibly detailed instructions …read more

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Open Source Modular Rocket Avionics Packagerocket-wb-featurednerdyjb

Mon, 21 Aug 2017 23:01:35 +0000

Cambridge postgraduate student [Adam Greig] helped design a rocket avionics system consisting of a series of disc-shaped PCBs arranged in a stack. There’s a lot that went into the system and you can get a good look at it all through the flickr album.

Built with the help of Cambridge University Spaceflight, the Martlet is a 3-staging sounding rocket that lifts to 15km/50K feet on Cesaroni Pro98 engines. [Adam]’s control system uses several Arm Cortex M4s on various boards rather than having just one brain controlling everything.

Each disc is a module that plays a specific role in the system. …read more

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Horizontal Magnetic Levitation Experimentslev-featbodgewires

Mon, 21 Aug 2017 20:01:56 +0000

Levitating chairs from the Jetsons still have a few years of becoming a commercial product though they are fun to think about. One such curious inventor, [Conor Patrick], took a deep dive into the world of maglev and came up with a plan to create a clock with levitating hands. He shares the first part of his journey to horizontal levitational control.

[Conor Patrick] bought an off-the-shelf levitation product that was capable of horizontal levitation. Upon dissecting it he found a large magnet, four electromagnet coils, and a hall effect sensor. These parts collectively form a closed-loop control to hold …read more

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Hackaday Prize Entry: MappyDot, a Micro Smart LiDAR Sensor5059851502884608179dp2cnk

Mon, 21 Aug 2017 18:30:23 +0000

[Blecky]’s entry to the Hackaday Prize is MappyDot, a tiny board less than a square inch in size that holds a VL53L0X time-of-flight distance sensor and can measure distances of up to 2 meters.

MappyDot is more than just a breakout board; the ATMega328PB microcontroller on each PCB provides filtering, an easy to use  I2C interface, and automatically handles up to 112 boards connected in a bus. The idea is that one or a few MappyDots can be used by themselves, but managing a large number is just as easy. By dotting a device with multiple MappyDots pointing in different …read more

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Living Logic: Biological Circuits for the Electrically MindedBioLogicmichaeluttmark

Mon, 21 Aug 2017 17:01:43 +0000

Did you know you can build fundamental circuits using biological methods? These aren’t your average circuits, but they work just like common electrical components. We talk alot about normal silicon and copper circuits ‘roud here, but it’s time to get our hands wet and see what we can do with the power of life!

In 1703, Gottfried Wilhelm Leibniz published his Explication de l’Arithmétique Binaire (translated). Inspired by the I Ching, an ancient Chinese classic, Leibniz established that the principles of arithmetic and logic could be combined and represented by just 1s and 0s. Two hundred years later in …read more

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Amphibious Houseboat Hits the Open Roadboat-1adamfabio

Mon, 21 Aug 2017 15:30:30 +0000

What’s better than having your own houseboat? How about an amphibious houseboat? That’s exactly what [Theon Parseghian] is building in his driveway. It all started with a derelict 32-foot long houseboat. A 1967 model with a rusted steel hull, [Theon] originally bought it as a guest house.

[Theon] couldn’t let the boat rust away in his back yard though. Quickly decided to get it back on the open water…. and on the road. An amphibious houseboat. While looking for large tractor tires, [Theon] found an entire crop sprayer which hadn’t been used in years. This crop sprayer was a giant …read more

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