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Hackaday



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Last Build Date: Sun, 19 Nov 2017 10:48:11 +0000

 



3D Printed Cookie Molds for the Best SpeculoosIMG_8644christiantrapp101017

Sun, 19 Nov 2017 09:01:54 +0000

Experiencing nostalgia for the outstanding Belgian cuisine [Adam], currently stuck in Ohio, found himself in craving some home-made speculoos. For the uninitiated, speculoos is what those brown cookies usually served with coffee on planes dream of becoming one day.

To add some extra regional flavour, [Adam] decided to print his own molds featuring motifs from Brussels. The risks of 3D prints in the kitchen are the subject of a lively discussion. They are addressed in this project by recommending the use of food safe filament and sealant for the molds. The fact that the dough will be removed from the …read more

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Brits: Make A Vote, Put Cash A Hackerspace’s Wayheart-illustration-aviva-community-fund-blogviewjennylist

Sun, 19 Nov 2017 07:31:13 +0000

Those of you who have been involved in the running of a hackerspace or makerspace will know the never-ending struggle to maintain financial solvency, and the quest for sources of income to move your organisation forward. It’s certainly a topic upon which Hackaday’s crew have some experience, more than one of us has helped run a space.

A good avenue to explore lies with community grants: money from organisations on a philanthropic basis to invest in community organisations. These can come from charities, governmental organisations, or even from companies as part of their corporate social responsibility. It’s this last source …read more

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Huge 74181 is a Classic ALU You Can Actually Understand74181-featuredjennylist

Sun, 19 Nov 2017 06:01:36 +0000

You can no longer buy a brand-new 74181, they’ve been out of production for years. All is not lost though, for [Dave’s Dev Lab] have created a facsimile of one on a printed circuit board, using modern single-gate 74-series chips.

Why on earth would you want an oversized replica of an outdated logic chip from nearly five decades ago, we hear you ask? The answer lies in education. If you were to embark on learning about the internals of a microprocessor by taking a modern example such as the one that powers the device on which you are reading this, …read more

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DS212 Oscilloscope Review: Open Source and Great for Hackingds212-oscilloscope-reviewwd5gnr1

Sun, 19 Nov 2017 03:01:09 +0000

We’ve seen plenty of oscilloscopes that look like repurposed cell phones. Usually, though, they only have one channel. The DS212, has two channels and a signal generator! [Marco] gives his review and a quick tear down in the video below.

The scope isn’t going to replace a big bench instrument, but for a portable scope with a rechargeable battery, it isn’t bad. The 1 MHz analog bandwidth combines with a 10 megasample per second front end and 8K of sample memory. The signal generator can produce basic waveforms up to 1 MHz. We were somewhat surprised the unit didn’t sport …read more

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Drill the Wet Side Wet and the Dry Side DryFF62GBPJA36KNJVdpsm64

Sun, 19 Nov 2017 00:01:38 +0000

Working mostly in metal as he does, [Tuomas Soikkeli] has invested in some nice tools. So when his sweet magnetic-base drill was in need of a new home, he built this two-in-one drilling station to maximize shop space and add some versatility to boot.

For the non-metalworkers out there, a mag-base drill is basically a portable drill press where the base is replaced with a strong electromagnet like the one shown here. They’re often used in the construction trades to drill holes in steel beams or columns, and often include nice features like a built-in coolant system.

[Tuomas] effectively turned …read more

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3D Printed WiFi Reflectors Custom Designed for the Buildingwifi-reflector-featuredkripthor

Sat, 18 Nov 2017 21:01:52 +0000

Are you a wizard at antenna design? Chances are you’ve never even given it a try, but this tool could change that. Most home-made WiFi signal boosting antenna plans around the Internet share one feature: they are directional antennas or reflectors. But WiPrint is a tool for designing custom WiFi reflectors that map to the specific application.

If we want to increase the signal strength in two or three different locations the traditional solution is an omnidirectional antenna. The problem is, although a good omnidirectional antenna increases the signal power in those locations we want, it also increases the signal …read more

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MiSTer Upgrades Vintage Computer Recreationsmistwd5gnr1

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

The MiST project provides an FPGA-based platform for recreating vintage computers. We recently saw an upgraded board — MiSTer — with a similar goal but with increased capability. You can see a video of the board acting like an Apple ][ playing Pac Man, below.

The board isn’t emulating the target computer. Rather, it uses an FPGA to host a hardware implementation of the target. There are cores for Apple, Atari, Commodore, Coleco, Sega, Sinclair and many other computers. There are also many arcade game cores for games like Defender, Galaga, and Frogger.

The MISTer uses a Terasic DE-10 board …read more

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