Blacksmith Forge Made From the Bathroom Sink

The sweltering heat had finally moved on and Giant Tick season was coming to a close (not kidding, they are HUGE here), when I decided to fire up my hacked together blacksmith forge made out of an old bathroom sink and aquarium stand.

In the age-old formula I needed to supply an air source to a fuel to create enough heat to make iron malleable. I got the idea that this particular bathroom sink might be a good candidate for a fire bowl after I banged my shin with it and then cursed at it. It was clearly made of cast iron and as proof it was clearly unfazed by my tirade of words which I hope my son has learned from the Internet and not from listening to me remodel the bathroom.

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Tindie Becomes A Part Of The Hackaday Family

A little over two years ago, we announced that Hackaday became a part of Supplyframe. This was a natural fit: both sides are comprised of hardware engineers, computer scientists and hackers alike. We immediately pooled forces and set out to make Hackaday bigger, with a broader mission. So far, it has been an amazing journey: is approaching 100,000 registered users, The Hackaday Prize is in its second year, and the Hackaday Store is about to fulfill its 5,000th order.

The main theme behind all of this is fostering collaboration, learning, and providing incentives for everyone in the community to stop procrastinating and try to build something amazing. is here to inspire, to help develop projects in the open, and the Hackaday Store is to provide a way to turn passion projects into a self-sustainable lifestyle. While the road to community-powered innovation might not be easy, it’s something we’re all incredibly passionate about, and will continue investing in to further this goal.

With that in mind, we’re very excited to announce that everyone’s favorite hardware marketplace – Tindie, has been acquired by Supplyframe and will be joining the Hackaday family! Apart from the fact that most of us are personal fans of the website, we believe that Tindie fills an important gap in helping projects cross the chasm between prototype and initial production. Crowdfunding provides access to capital for some (and access to laughs for others), but it’s not always the way to go. You might not be ready to quit your day job or take on a project full-time. You might be working on rev1 of the project and want to try the “lean manufacturing” thing. Or maybe you’re building something for your own purposes and have some extras lying around. Tindie is a platform that has helped launch many such projects, and we’re incredibly lucky to have it be a part of Hackaday.

Now what?

Naturally, the question that’s on everyone’s mind is, what happens next? Are we going to mess things up? Paint Tindie in black? Change the fee structure? While we have ideas on things that we could help with, our main goal will be making sure that the Tindie community continues to thrive. The only changes we’re interested in are the ones that make the community stronger. We are fascinated with the challenges surrounding the supply chain and will be looking into tools to help sellers improve margins and ship better products. and Tindie combined represent the world’s largest repository of (working) Open Hardware products, so we will be looking into more closely integrating the two. We will also make efforts to grow the overall Tindie audience, as every new buyer helps move the community forward.

All of these are some of the ideas, but we’re ultimately looking at you for guidance: things we should do, problems we should attack, dreams of future capabilities.

Wish us luck in this new adventure.

Aleksandar Bradic

From Gates to FPGA’s – Part 1: Basic Logic

It’s time to do a series on logic including things such as programmable logic, state machines, and the lesser known demons such as switching hazards. It is best to start at the beginning — but even experts will enjoy this refresher and might even learn a trick or two. I’ll start with logic symbols, alternate symbols, small Boolean truth tables and some oddball things that we can do with basic logic. The narrative version is found in the video, with a full reference laid out in the rest of this post.


1The most simple piece of logic is inversion; making a high change to low or a low change to high. Shown are a couple of ways to write an inversion including the ubiquitous “bubble” that we can apply almost anywhere to imply an inversion or a “True Low”. If it was a one it is now a zero, where it was a low it is now a high, and where it was true it is now untrue.


2Moving on to the AND gate we see a simple truth table, also known as a Boolean Table, where it describes the function of “A AND B”. This is also our first opportunity to see the application of an alternate symbol. In this case a “low OR a low yields a low”


3Most if not all of the standard logic blocks come in an inverted form also such as the NAND gate shown here. The ability to invert logic functions is so useful in real life that I probably used at least three times the number of NAND gates as regular AND gates when doing medium or larger system design. The useful inversion can occur as spares or in line with the logic.

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Live Now: 2015 Hackaday Prize Worldwide: LA

Right now we’re throwing a huge workshop, meetup, and hackathon in Pasadena.

Events include a ‘Zero to Product’ workshop that will take everyone through PCB design, manufacturing techniques, CAM, soldering, testing, and blowing up caps and releasing blue smoke. You can check out the live stream of that here (or below).

Later on this evening, we’ll be having a few short talks from some LA-area hackers, builders and engineers.

Tomorrow is Open Hack Day, where the Hackaday Design Lab will have tables filled with components, dev boards, soldering irons, and enough blinkey stuff to blind someone. Live stream below.

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Hardware You Might See in a Bar in New York

Our New York City trip for the TechCrunch hackathon is just about wrapped up, and this weekend we’re hosting a hardware hackathon at the Hackaday Design Lab in Pasadena, but there’s still one more event from NYC left to cover: our drink-up in the city.

Our drink-up took over about 90% of the Antler Beer and Wine Dispensary, with the usual, not electronically enabled patrons sufficiently annoyed.

datarecorderWhile this meetup was really just a meet-and-greet pregame for the TechCrunch hackathon, and not a proper ‘bring a hack’, that didn’t stop a few people from toting out some very cool hardware. [Katie Fortunato] trucked out a flight data recorder (or an airplane’s black box, painted orange for visibility) that is supposedly from a 747.

This flight data recorder keeps relevant data on a loop of mylar tape. We didn’t crack into that part of the black box, but we did manage to dig into the electronics. Very weird stuff in there; the control electronics have a backplane design, where each card has a connector that’s basically 2 rows of 50 or 75 female pin sockets. These cards aren’t keyed in any way, and they must be placed in the backplane in a certain order. The circuits are extremely simple; just a mix of op-amps, 74- and 54-series logic (no, we can’t figure that one out, either), buffers, and inverters. The latest date code was some time in the early 80s, and all the boards had a conformal coating on them. There’s a weird connector on the outside of the black box [Katie] promises to document on her profile.

Also at the event were a few folks from NYC Resistor, a few people from the IoTGotham meetup, some of the crew from littleBits. Somewhere in the pictures below is a Ms. PacMan/Galaga cabinet. Yes, I tested the bee overflow cheat, it works, but the high score was above 500,000.

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Caption CERN Contest Week 11

Week 10 of the Caption CERN Contest is a wrap folks! Our surprised scientist brewed up a ton of great captions from our great community. We may never know what exactly is in that keg/carboy, or what the heck is draining into that bucket. Still, it’s probably safe to say that no one has put this much thought into those particular items since this scientist performed his research.

The Funnies:

  • “After many decades of hard work, Dr. Milton and his research was moved down into basement after he complained one too many times about his missing stapler.” – [joe_pumpernickle]
  • “Parker! Get down here! Ever since that radioactive spider bit you, you’ve crawling up the walls!”-[DainBramage]
  • “It rubs the dielectric grease on its relay contacts or else it gets the hose again” -Team effort from [MechaTweak] and [Nick Sayer]

The winner for this week is [airbuckles] with “Meet Dooglas, experimenting with beer brewing, CERN style. Shown here controlling the critical HOP collider.” [airbuckles] won’t need any buckles for his new Robot T-Shirt From The Hackaday Store!

Week 11: A double-header!

cern-11-smWe’ve got something a bit different for week 11: Two images from CERN’s archives! Both of these images feature a lovely PDP-11 from Digital Equipment in Galway, Ireland. They also feature two CERN researchers. The scientist on the left is wearing typical hacker attire – sneakers, jeans, and a comfy shirt. The hacker on the right went for something which we’re guessing was a bit more stylish back in 1982, but hasn’t quite held up to the test of time.

These scientists must have been doing some heavy-duty number crunching to need a PDP-11. Do you know what that strange hand wired rack of equipment is in the center? Do you have any idea where we can find a pair of harem pants like the woman on the left? Write a caption and let us know!

Add your humorous caption as a comment to this project log. Make sure you’re commenting on the project log, not on the project itself. As always, if you actually have information about the image or the people in it, let CERN know on the  original left CERN image, and original right CERN image.

Good Luck!

Caption CERN Contest Week 10

We had some great entries in the Caption CERN Contest this week. A huge thanks goes out to everyone who entered.  The jury is still out as to whether the gentleman on the left is a CERN staffer, or a Morlock caught on camera. Our eagle-eyed readers picked out some things we didn’t even notice at first blush – like the strange foreshortening of the “pipe smoking dude’s” right leg. (Yes, he is officially known as pipe smoking dude here at Hackaday HQ). We spotted him again in this image, and he’s in almost exactly the same pose!

The Funnies:

  • “Billy looked on as the James, the workplace bully, was about to walk in to Billy’s electrified puddle of water..” – [Leonard]
  • “This is Bob. Bob made a BAD ENGINEERING MISTAKE. Bob is going to spend some time in THE CORNER. Corners are not easy to find in a ring, so this is Bob’s BAD CORNER.?” – [ca5m1th]
  • “In a hole in the ground there lived a hobbit. His name was Boson Baggins and he had a great fondness for pipe weed and protons.” – [shlonkin]

The winner for this week is [Greg Kennedy] with “You call that a moonwalk? Stand back, Edmund, and let me show you how it’s done.”  If [Greg’s] name sounds familiar, that’s because he used some creative web scraping to compile the unofficial stats for the 2014 Hackaday prize. They were pretty interesting, so we featured them right here on the blog. [Greg] will be hacking in style wearing his new Robot T-Shirt From The Hackaday Store!

On to week 10!cern-10-sm

There’s something for everyone in this image from CERN’s achieves. Gas bottles, chemicals, huge concrete blocks, high voltage wires, and a rather surprised looking scientist. What sort of experiment would require this sort of shielding? What is the photographer standing on? Most importantly, is that a keg of beer hiding under the table to the right?

Add your humorous caption as a comment to this project log. Make sure you’re commenting on the project log, not on the project itself.

As always, if you actually have information about the image or the people in it, let CERN know on the original image discussion page.

Good Luck!