Competitive Soldering Gets Heated At Hackaday Superconference

November 3, 2018 by 20 Comments

The Hackaday Superconference is in full swing, and in addition to the greatest hardware hackers, a great gathering of tinkerers, awesome talks, badge hacking, and so much more, we’ve also got competitive soldering. This year, we’re making soldering competitive with the SMD Solder Challenge. It began Friday morning as hackers go heat to head, hand soldering frustratingly tiny parts.

The rules are simple: you’re given a light, a magnifying glass, some solder, wick, flux, and the standard Hakko soldering iron (with the standard tip). The task is to solder up our own special version of the SMD Challenge Kit from MakersBox that includes an SOIC8 ATtiny85 to drive LED/resistor pairs in 1206, 0805, 0603, 0402, and 0201 packages. Scoring is based on time, completion, functionality, neatness, and solder joint quality. May the steadiest hands and sharpest eyes win.

Already, we’ve gone through a few heats of the SMD Soldering Challenge where six hackers sit down, are given five minutes of inspection time, and then whip out their irons. All of this is run by our very own [Al Williams], who serves as the ultimate arbiter of what good soldering is. It’s an amazing competition, and if you don’t think 0201 packages are hand-solderable, you haven’t seen the attendees at the Hackaday Supercon. The top times, by the way, are between 20-30 minutes to complete the entire challenge, with [Sprite_tm] currently at the top of the leaderboard.

You can check out all the talks from the Hackaday Superconference over on our live stream, where we’ll (eventually) be announcing the winners of the SMD Soldering Challenge and the winners of the badge hacking competition later on. Don’t miss the announcement of the winner of the 2018 Hackaday Prize later on this evening!

Competitive soldering
Kapton tape and tweezers at work

Voice Controlled Glasses And Magnifying Lens

November 3, 2018 by 4 Comments

If you’re reading Hackaday, you’re probably intimately familiar with really small parts. 0201 resistors are tiny, and even smaller parts aren’t unheard of. The screws that go in your phone are minuscule, and a magnifying glass is really handy if you want to check out the detail on your 3D prints. While this is easy if you have good eyesight and you’re young, a lot of us don’t have that luxury and instead must rely on magnifying glasses and loupes. [Mauro]’s project for the Hackaday Prize makes wearing these loupes and lenses even easier by adding a voice-controlled servo.

The basic idea behind this device is simple — just mount a standard hobby servo to a pair of glasses and put a pair of loupes on a hinge. With a Raspberry Pi Zero W, controlling this servo is easy. The real trick here is adding voice control, and for that [Mauro] is using the Watson Speech to Text service. Moving a pair of loupes away from your eyes is as simple as setting up an account with the Watson Speech to Text service, and sending out API calls using NodeJS.

In addition to magnifying glasses, [Mauro] also has a few other ideas in mind on how to make this device even more useful. It could be used for welding goggles, for removing sunglasses as you’re driving through a tunnel, or it could even be adapted as an improved version of those crazy straws that suck liquid around the rim of plastic glasses. The potential here is almost limitless, and this is one of the better projects in this year’s Hackaday Prize.

You can see a video of these glasses in action (without the voice activation) after the break.

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Adding Energy Use And Cost To “Laundry Done” Notifications

November 3, 2018 by 29 Comments

Some time ago [Xose Pérez] got interested in generating a notification when his washer had completed a cycle, and now with added features like reporting power usage and cost, he’s put it all together into a Node-Red node that makes it easy to modify or integrate with other projects.

[Xose] started this journey with a Laundry Monitor he created that effectively used cheap hardware (and his own firmware) to monitor his washing machine’s current usage. That sensor was used as the basis for sending notifications informing him whenever the appliance’s cycle was done. Since then, he has continued to take household power monitoring seriously, and with a bit of added work can not only tell when a given appliance has been started and stopped, but can also summarize the energy usage and cost of the appliance, making the notifications more useful. The package is named node-red-contrib-power-monitor and is also hosted on GitHub.

Cheap WiFi-enabled smart switches are making it possible for even the dumbest of appliances to join the Internet of Things, so don’t ignore [Xose]’s complementary work on ESPurna, which is an alternative open-source firmware for a wide variety of ESP8266 and ESP8285 based smart switches, lights and sensors.

Livestream The Hackaday Superconference

November 3, 2018 by 3 Comments

[youtube=https://www.youtube.com/watch?v=4WxPGLsdbB8&w=560&h=315]

The Hackaday Superconference is happening right now and you can join in on the Livestream. Talks begin at 10 am Pacific time on Saturday and Sunday.

The live stream covers one of two stages at the ultimate hardware conference. Topics focus on hardware creation, ranging from silicon chip fabrication, drop-in circuit designs, firmware frameworks, and 3D printing orbital rockets, to abusing printer cartridges, placing circuits on odd substrates, lighter-than-air electronics, and better techniques for building tech in garments, jewelry, props, and other wearables. Saturday evening you can watch as the Hackaday Prize is awarded live on stage, and Sunday afternoon’s festivities show off hardware and software skills with the badge hacking presentations.

There is so much more going on at Supercon besides the talks. The hacker village began Friday morning and continues through the weekend as badge hacking, the SMD soldering challenge, and other shenanigans continue. Get the inside scoop on those happenings by joining the live chat and following Hackaday on social media with #Supercon.

Revive That Old Analog Cell Phone With SDR

November 3, 2018 by 32 Comments

With the latest and greatest 5G cellular networks right around the corner, it can be difficult to believe that it wasn’t so long ago that cell phones relied on analog networks. They aren’t used anymore, but it might only take a visit to a swap meet or flea market to get your hands on some of this vintage hardware. Of course these phones of a bygone era aren’t just impractical due to their monstrous size compared to modern gear, but because analog cell networks have long since gone the way of the floppy disk.

But thanks to the efforts of [Andreas Eversberg] those antique cell phones may live again, even if it’s only within the radius of your local hackerspace. His software allows the user to create a functioning analog base station for several retro phone networks used in Europe and the United States, such as AMPS, TACS, NMT, Radiocom, and C450. You can go the old school route and do it with sound cards and physical radios, or you can fully embrace the 21st century and do it all through a Software Defined Radio (SDR); in either event, calls to the base station and even between multiple mobile devices is possible with relatively inexpensive hardware.

[Andreas] has put together exceptional documentation for this project, which starts with a walk through on how you can setup your DIY cell “tower” with traditional radios. He explains that amateur radios are a viable option for most of the frequencies used, and that he had early success with modifying second-hand taxi radios. He even mentions that the popular BaoFeng handheld radios can be used in a pinch, though not all the protocols will work due to distortion in the radio.

If you want to take the easy way out, [Andreas] also explains how to replace the radios with a single SDR device. This greatly simplifies the installation, and turns a whole bench full of radios and wires into something you can carry around in your pack if you were so inclined. His software has specific options to use the LimeSDR and LimeSDR-Mini, but you should be able to use other devices with a bit of experimentation.

We’ve previously reviewed the LimeSDR-Mini hardware, as well as covered its use in setting up DIY GSM networks.

Who’s Going On Your Fifty?

November 3, 2018 by 102 Comments

You can tell a lot about a country, its history and its politics, by taking a look at its banknotes. Who features on them, or in the case of studiously engineered international compromises such as the Euro, who doesn’t feature on them. Residents of the UK  have over the years been treated to a succession of historical worthies on their cash, and when a new revision of a banknote is announced you can be certain that the choice of famous person to adorn it will be front page news. Today we have a new banknote on the way, and this time the selection is squarely in Hackaday’s sphere of interest because the public is being urged to nominate a scientist for the honour. The note in question is the £50, the one that nobody uses and plenty of shops won’t even accept, but still, it’s an important choice that will replace the incumbents on the present version, steam engine pioneers Matthew Boulton and James Watt.

So, given a blank £50, who would you put on it? Candidates must be British, not fictional, and also no longer alive. Names in the frame include Ada, Countess Lovelace, Stephen Hawking, and Alan Turing, though with such a wide field to choose from there are sure to be many more front-runners. You might, for example, wish to consider Rosalind Franklin, but you can forget Isaac Newton, Charles Darwin, or Michael Faraday as they have all already featured on British banknotes.

Hackaday does not take sides in such endeavors, but it’s still an opportunity to back your most inspiring figure. As your scribe, it’s a tough one between Lovelace and Turing, though Turing probably wins by a short head. Who would you like to see on the next £50 note? The bank has produced a short promotional video which we’ve placed below the break.

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Analog Synth, But In Cello Form

November 3, 2018 by 8 Comments

For one reason or another, electronic synthesizing musical instruments are mostly based around the keyboard. Sure, you’ve got the theremin and other oddities, but VCAs and VCFs are mostly the domain of keyboard-style instruments, and have been for decades. That’s a shame, because the user interface of an instrument has a great deal to do with the repertoire of that instrument. Case in point: [jaromir]’s entry for the Hackaday Prize. It’s an electronic analog synth, in cello form. There’s no reason something like this couldn’t have been built in the 60s, and we’re shocked it wasn’t.

Instead of an electrified cello with a piezo on the bridge or some sort of magnetic pickup, this cello is a purely electronic instrument. The fingerboard is metal, and the strings are made of kanthal wire, the same wire that goes into wire-wound resistors. As a note is fingered, the length of the string is ‘measured’ as a value of resistance and used to control an oscillator. Yes, it’s weird, but we’re wondering why we haven’t seen anything like this before.

How does this cello sound? Remarkably like a cello. [jaromir] admits there are a few problems with the build — the fingerboard is too wide, and the fingerboard should probably be curved. That’s really an issue with the cellist, not the instrument itself, though. Seeing as how [jaromir] has never even held a cello, we’re calling this one a success. You can check out a video of this instrument playing Cello Suite No. 1 below. It actually does sound good, and there’s a lot of promise here.

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