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Hackaday



Fresh hacks every day



Last Build Date: Wed, 01 Mar 2017 18:01:29 +0000

 



That Time I Spent $20 For 25 .STL Filesusbstickbrianbenchoffkitchenfoldercontents1The back of this USB thumb drive's packaging

Wed, 01 Mar 2017 18:01:24 +0000

Last weekend I ran out of filament for my 3D printer midway through a print. Yes, it’s evidence of poor planning, but I’ve done this a few times and I can always run over to Lowe’s or Home Depot or Staples and grab an overpriced spool of crappy filament to tide me over until the good, cheap filament arrives via UPS.

The Staples in my neck of the woods was one of the few stores in the country to host a, ‘premium, in-store experience’ featuring MakerBot printers. Until a few months ago, this was a great place to pick up …read more

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Friday Hack Chat: Raspberry Pi Principal Hardware Engineer Roger Thorntonraspberry-pi-hack-chat-featuredMike Szczysrpichat1-01join-hack-chat

Wed, 01 Mar 2017 17:01:41 +0000

Have you heard about the new Raspberry Pi Zero W which now includes WiFi and Bluetooth? Of course you have. Want to know what went into the addition to the popular design? Now’s the time to ask when this week’s Hack Chat is led by Roger Thornton, chief hardware engineer for Raspberry Pi.

Raspberry Pi was born on February 29th, 2012 and has seen a remarkable number of hardware flavors and revisions. Throughout, the hardware has been both dependable and affordable — not an easy thing to accomplish. Roger will discuss the process his team uses to go from concept, …read more

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Create Cheap Philips Hue Compatible Deviceshue_01anool

Wed, 01 Mar 2017 16:00:00 +0000

The Philips Hue range is a great way to add wirelessly controllable lighting to your home, but the protocol is proprietary which makes it difficult to add our own custom hardware. [Peter] found a way to create his own Hue compatible devices based on cheap JN5168 modules that are able to connect to the Hue bridge. This means you can roll out your own lamps using cheap RGB or White LEDs, a power supply and the JN5168 Zigbee Light Link module.

He started off by trying to clone a Zigbee Light Link device to a MeshBee — Seeed studio’s open …read more

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Where Are the Autonomous Lawnmowers?hackaday-cut-grass-featuredwillsweatmanreel mower0403

Wed, 01 Mar 2017 15:01:16 +0000

It’s impossible to know when society began to manicure its front lawns. Truth be told — cutting the grass was, and still is a necessity. But keeping the weeds at bay, trimming, edging and so forth is not. Having a nice lawn has become a status symbol of modern suburbia all across the globe. When the aliens arrive, one of the first things they will surely notice is how nice our front lawns are. This feature of our civilization could have only been made possible with the advent of specialized grass-cutting machines.

It could be argued that the very first …read more

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Using a Jewelry Kit to Resin-Encase Electronicsclear-cast-headlinerdp2cnkclear-cast-square

Wed, 01 Mar 2017 12:01:00 +0000

Some of us have looked at clear resin jewelry casting kits online and started to get ideas. Hackaday’s own [Nava Whiteford] decided to take the plunge and share the results. After purchasing a reasonably economical clear resin jewelry casting kit from eBay, a simple trial run consisted of embedding a solar lantern into some of the clear resin to see how it turned out. The results were crude, but promising. A short video overview is embedded below.

The big hangup was lack of a proper mold. [Nava]’s attempt to use a plastic bag and a cup as an expedient stand-in …read more

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DIY 3D Slicer is a Dynamoslice250wd5gnr1

Wed, 01 Mar 2017 09:01:14 +0000

We all know that hacker that won’t use a regular compiler. If he’s not using assembly language, he uses a compiler he wrote. If you don’t know him, maybe it is you! If you really don’t know one, then meet these two. [Nathan Fuller] and [Andy Baldwin] want to encourage you to write your own 3D slicer.

Their post is very detailed and uses Autodesk Dynamo as a graphical programming language. However, the details aren’t really specific to Dynamo. It is like a compiler. You sort of know what it must be doing, but until you’ve seen one taken apart, …read more

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Beefy 100 Amp Electronic Load uses Two MOSFETsloadwd5gnr1

Wed, 01 Mar 2017 06:00:00 +0000

[Kerry Wong] had some extreme MOSFETs (IXTK90N25L2) and decided to create a high current electronic load. The result was a two-channel beast that can handle 50 A per channel. Together, they can sink 400 W and can handle a peak of 1 kW for brief periods. You can see a demo in the video below.

An electronic load is essentially a load resistor you can connect to a source and the resistance is set by an input voltage. So if the load is set to 10 A and you connect it to a 12 V source, the MOSFET should look …read more

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