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Hackaday



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Last Build Date: Sat, 18 Nov 2017 16:38:00 +0000

 



Problems that Plagued an Edible Marble MachineEdible Marble Machine Featureddp2cnk

Sat, 18 Nov 2017 15:00:00 +0000

Prolific creator [Martin Raynsford] recently created a plus-sized edible version of his laser-cut Marble Machine for a Cake International exhibit and competition; it seemed simple to do at first but had quite a few gotchas waiting, and required some clever problem-solving.

The original idea was to assemble laser-cut gingerbread parts to make the machine. Gingerbread can be laser-cut quite well, and at first all seemed to be going perfectly well for [Martin]. However, after a few days the gingerbread was sagging badly. Fiddling with the recipe and the baking was to no avail, and it was clear [Martin] needed to …read more

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Becoming Your Own ISP, Just for Funmain450lewinday

Sat, 18 Nov 2017 12:00:00 +0000

When moving into a new house, it’s important to arrange for the connection of basic utilities. Electricity, water, and gas are simple enough, and then it’s generally fairly easy to set up a connection to an ISP for your internet connection. A router plugs into a phone line, or maybe a fiber connection and lovely packets start flowing out of the wall. But if you’re connected to the internet through an ISP, how is the ISP connected? [Kenneth] answers this in the form of an amusing tale.

It was during the purchase of data centre rack space that [Kenneth]’s challenge …read more

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Upgraded Hotel Room CoffeeIMG_20171022_202557engineermcevoy

Sat, 18 Nov 2017 09:00:00 +0000

The secret of cold-brew coffee is out. Department stores are selling gimmicks to make it at home or you can make it with a mason jar in good old-fashioned DIY style. This method is for the on-the-go hacker who may not have even the most spartan of equipment to brew a cold cup of Joe. Many hotel rooms are outfitted with a cheap percolating coffee machine and proprietary pods. The pods are just a sachet of filter paper with ground coffee inside.

Leave that percolating fire hazard unplugged and brew those pods overnight in a glass of water. In eight …read more

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Raspberry Pi Compute Module 3 in a GameBoy Originalmainbryancockfield

Sat, 18 Nov 2017 06:00:39 +0000

[Kite] has been making custom PCBs for GameBoys for a long time. Long enough, in fact, that other people have used his work to build even more feature-rich GameBoy platforms. Unfortunately some of their work had stagnated, so [Kite] picked it up and completed a new project: a GameBoy that uses a Raspberry Pi running on his upgraded GameBoy PCB.

At its core the build uses a Raspberry Pi 3, but one that has been shrunk down to the shape of a memory module, known as the Compute Module 3. (We featured the original build by [inches] before, but [Kite] …read more

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New Part Day: A fake Sun500Wled_02anool

Sat, 18 Nov 2017 03:00:36 +0000

LED technology has improved by leaps and bounds in recent years, with what was once considered unachievable being common place now. Two of the main parameters of interest, total input power and conversion efficiency have been steadily increasing over the years. An efficacy of 120 lumens/watt is fairly common nowadays, and it may not be improbable to expect double this figure in the near future. Input power ratings have also steadily increased, with single LED units capable of 100 W or more becoming common.

But the Chinese manufacturer Yuji seems to have hit the ball out of the park by …read more

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Your Next Wearable May Not Need Electricitymagfab-door-lock-800cornbreadninja

Sat, 18 Nov 2017 00:00:02 +0000

What if you could unlock a door with your shirtsleeve, or code a secret message into your tie? This could soon be a thing, because researchers at the University of Washington have created a fabric that can store data without any electronics whatsoever.  The fabric can be washed, dried, and even ironed without losing data. Oh, and it’s way cheaper than RFID.

By harnessing the ferromagnetic properties of conductive thread, [Justin Chen] and [Shyam Gollakota] have  proved the ability to store bit strings and 2D images through magnetization. The team used an embroidery machine to lay down thread in dense …read more

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Mindstorms Forkliftbots Gonna Take Your Jobforkliftbots_mainnerdyjb

Fri, 17 Nov 2017 21:01:42 +0000

With every advance in robotics, we get closer to being able to order stuff from Amazon and have no human being participate in its delivery. Key step in this dream: warehouse robots, smart forklifts able to control and inventory and entire warehouse full of pallets, without the meat community getting involved. [Thomas Risager] designed just such a system as part of his Masters Thesis in Software Engineering. It consists of five LEGO Mindstorms robots working in concert (video embedded below), linked via WiFi to a central laptop. Mindstorms’ native OS doesn’t support WiFi (!!!) so he reflashed the EV3’s ARM9 …read more

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