With Arduino library support on an ARM Cortex M4 processor, it’s no surprise that we’re fans of the Teensy 3.1. And lately, [Paul Stoffregen] has been building out the Audio Library for this platform, making it even more appealing to the synth / audio geeks among us. And now, with just the addition of a highfalutin LED and some software, the Teensy can output digital audio over optical fiber.
S/PDIF, and more specifically optical TOSLINK, uses LED light sent down an optical fiber to encode audio data. The advantage of this over any voltage-level signals (like with regular wires) is that the source and destination devices aren’t electrically connected at all, which gets rid of the dreaded ground loop hum and any RF interference.
An S/PDIF audio data stream is a bit complex, but if you’re interested [Micah Scott] has a fantastic dissection of it up on her blog. Of course, you don’t have to know anything about any of that to simply use S/PDIF with the Teensy Audio Library.
We love open source hardware and software because of the collaborations that make ultra-rapid development of niche stuff like this possible. You can follow along with the development of the Teensy’s S/PDIF capabilities on the PJRC forum. Contributor [Frank B] modestly claims that “everything was already on the internet”, but that doesn’t make it any less cool that they got from zero to working library in a few weeks. (And note the clever use of a precomputed lookup table for speed.)
On the hardware side, [Paul] has posted up his adapter board for a cheap, but very professional looking, optical TOSLINK sender. But if you’re feeling ghetto, you can simply use a red LED pointed just right into the optical cable.
The end result? Lossless transmission of CD-quality audio from an Arduino-esque microcontroller, sent on a beam of light, for less than the cost of a latté.
Canada! Just in time for Spring to hit. I went to Toronto to speak at FITC, an arts and technology conference, co-host a Hackaday meetup with HackLab TO, visit the DigiPlaySpace at TIFF, and to check out Globacore’s new digs.
FITC is a conference which celebrates the creativity in technology. Pictured above is Diorama Rama designed by [Christopher Lewis] and [Creative Technologists of Toronto] and built over 4 days by participants at FITC. The buildings are laser cut paper, and participants create a simple circuit using an ATtiny. A message is coded into the chip in ASCII and the buildings blink an individual message back in Morse code, each building blinking a different message. It’s pretty interesting to use a Morse –> ASCII phone app (Morse Tools) to read the messages.
Looking at Diorama Rama with Morse Tools
Hackaday Prize judge [Micah Elizabeth Scott] gave a talk about her work. [Jessica Rosenkrantz] of Nervous System spoke about her company’s process when designing mathematically based objects. She spoke about her 3D printed dress pictured below and how it was made. Amazing! I also got to show off my newly minted Breathe project at FITC.
Kinematics by Nervous System
After FITC ended, HackLab co-hosted a meetup with us. A team from HackLab was a 2014 Hackaday Prize Semifinalist and won $1000 in components with their Retro Populator, a Pick and Place machine retrofit onto a 3D printer. We had beer as well as almond-cream flavored non-alcoholic drinks from the Luma Droid, a drink mixing robot. HackLab is a good-sized hackerspace, with a huge room for a meetup, a full kitchen and vegan dinner served frequently, plus a shop tools room all by itself.
Eric Boyd kicks it off
Luma Droid!
3D router
Retro Populator
Full house at HackLab
Among the lightning talks, [Pearl Chen] brought her Intel Edison-powered alarm clock that has but one function — to tell her when she is running late. [Johannes van der Horst] brought a USB current monitor that had many of us fascinated for about an hour at the end of the evening, plugging in a phone or a battery just to see the numbers climb. [Eric Boyd] talked about the DIY Bio projects that are going on at HackLab. They are testing meat using PCR to see if it is indeed, beef. Ew.
[Andrew Kilpatrick] of Kilpatrick Audio showed us an older version of his synthesizer before showing us his newest revision, Phenol, which looks pretty slick.
Pearl Chen
Johannes van der Horst’s USB current meter
Johannes van der Horst’s USB current meter
Pearl Chen’s smart clock
Andrew Kilpatrick’s Phenol synth
[Hugh Elliot] spoke about a light-photography project. [Leif Bloomquist] spoke about a gaming glove project that Hackaday had previously covered. Leif had a Commodore 64 with him and all the games on it fit into 1 GB! [Nadine Lessio] discussed how many programs claim that you can become an expert in a few hours, but in fact, things are not easy. [Jay Vaidya] showed us an IFTTT hack which controls heaters and AC. [Andy Forest] showed us an impressive interactive model of Ontario’s power system that kids at Steam Labs created.
Leif Bloomquist’s gaming glove
IFTTT hack
That was a super fun meetup! Thanks HackLab for hosting. We’ve got a bunch of upcoming meetups and larger events in LA, NYC, Bangalore, San Francisco and Shenzhen. Check our events page for what, where, and when, We’d love to see you.
I stopped by TIFF’s Bell Lightbox to see the DigiPlaySpace exhibit. [Micah Scott] did a collaboration with Ryerson University’s RTA School of Media which welcomes you as you walk in. Note: all photos are lifted directly from TIFF.net’s website.
Headrush
Forest
Alien
My final stop on this tour was to visit Globacore’s new offices. We spent a day or so hacking on a VR controller for their newest game called Power Cube. Power Cube is an Oculus Rift experience with a custom game controller holding an accelerometer, a gyroscope and magnetometer that links into the game directly.
And now it’s time to recognize a big part what makes the Hackaday Prize possible: our Judges and our Sponsors. First up are the Judges. We are fortunate again this year to be joined by top experts from around the world. We are going to briefly touch on each in this post, but you really should hit the Judge’s page for bios and links on everyone.
New Judges in 2015
Akiba
Pete Dokter
Lenore Edman
Heather Knight
Ben Krasnow
Windell Oskay
Micah Scott
We have seven judges new to the panel this year:
We love seeing a project pic used as an avatar and [Akiba] of freaklabs didn’t disappoint; we covered that project in 2013. [Pete Dokter], known well for According to Pete, joins us from Sparkfun. [Lenore Edman] and [Windell Oskay] are the force behind Evil Mad Scientist Labs. [Heather Knight] of Marilyn Monrobot is finishing her PhD in Robots at Carnegie Mellon. [Ben Krasnow] should need no introduction; formerly of Valve, currently of Google[x], and always of Applied Science. [Micah Scott] is artist/engineer/hacker and her Blu-Ray drive RE work is among our most favorite of 2014 hacks.
Returning Judges
Limor “Ladyada” Fried
Jack Ganssle
Dave Jones
Ian Lesnet
Elecia White
Five of our friends from the 2014 Hackaday Prize are returning this year:
We have a hard time calling the founder of Adafruit anything other than [Ladyada] but you may know her as [Limor Fried]. The hardware design site The Ganssle Group is spearheaded by [Jack Ganssle]. You know [Dave Jones] from his electronics design and reverse engineering videos on EEVblog and also from the Amp Hour podcast. [Ian Lesnet] is a Hackaday alum, creator of Dangerous Prototypes, and expert regarding manufacturing in China. And finally, [Elecia White] is an extraordinary embedded engineer, founder of Logical Elegance, and the Embedded podcast.
Welcome back, and so happy to have the new Judges this year!
2015 Hackaday Prize Sponsors
The 2015 Hackaday Prize is presented by Supplyframe (parent company of Hackaday). This year we have added five giants of the hardware world as sponsors. We don’t recall having seen so many major players come together for a single initiative. We’re excited that they share our vision of supporting design initiatives. Please thank them by following their Hackaday.io pages: Atmel, Freescale Semiconductor, Microchip, Mouser Electronics, and Texas Instruments. Thank you sponsors!
Last year we challenged you to build the next generation of connected devices. Six months later, the best teams and projects from around the world battled for the greatest prize of all: the respect of their peers and a trip to space. This year, we’re issuing a call to hackers, engineers, makers and startups from all over the world, to focus their creative efforts on nothing less than solving serious issues facing humanity.
Fix the World
We’ll all be facing a lot of problems in the next few decades, whether they’re from rising costs and consumption of oil, droughts, access to food, demographic shifts in populations, or increasing health care costs. These problems need to be dealt with, and there’s no better time than right now to start working on solutions.
What do we want from you? We want you to identify the greatest problems faced by humanity in the next few years and come up with a solution. This can be anything from better, lower-cost solar power components, inexpensive ultrasound machines, better ways to store drugs, more advanced ways of measuring farm production, or cheaper, more sustainable smartphones to bridge the digital divide. The world is full of problems, but if there’s one thing hackers have taught us, it’s that there are more than enough people willing to find solutions.
Prizes
If worldwide notoriety isn’t enough personal incentive, Hackaday is back with a huge slate of prizes for those devices that best exemplify solutions to problems that matter.
The Grand Prize is a trip to space on a carrier of your choice or $196,883 (a Monster Group number). Other top prizes include a 90-Watt laser cutter, a builder kit (pcb mill, 3d printer, cnc router, bench lathe), a tour of CERN in Geneva, and a tour of Shenzhen in China.
New this year is the Best Product award. Go the extra mile and show a production-ready device (in addition to supplying three beta test units for judging) and you can score $100,000! The entry is of course still eligible to compete for the Grand prize and other top prizes.
We’re able to pull this off once again thanks to the vision of Supplyframe who managed to unite giants of the electronics industry as sponsors of the 2015 Hackaday Prize. Atmel, Freescale, Microchip, Mouser, and Texas Instruments have all signed on in supporting this mission.
Individuals, Colleges, Hackerspaces, and Startups
If you just don’t want to go-it alone, get your team excited. After all, it was a team that won the Grand Prize last year. SatNOGS transformed the cash-option of $196,418 into a jumpstart for a foundation to carry the project forward. Get the boss on board by touting the notoriety your company will get from showing off their engineering prowess. Or help build your resume by herding your college buddies into some brainstorming session. And the Best Product prize is perfect for Startups who want to show off their builds.
Judges
Joining the Judging Panels this year are Akiba (Freaklabs), Pete Dokter (Sparkfun), Heather Knight (Marilyn MonRobot), Ben Krasnow (GoogleX & host of Applied Science on YouTube), Lenore Edman & Windell Oskay (Evil Mad Scientist Labs), and Micah Scott (Scanlime).
Our returning judges are Limor “Ladyada” Fried (Adafruit), Jack Ganssle (Ganssle Group, & The Embedded Muse), Dave Jones (EEVBlog), Ian Lesnet (Dangerous Prototypes), and Elecia White (Logical Elegance).
You can read all of the judge bios and find social media and webpage links for them on our Judges page. We are indebted to these industry experts for sharing their time and talent to make the Hackaday Prize possible.
Tell Everyone
We don’t ask often: please tell everyone you know about the 2015 Hackaday Prize! Social media share icons are just above the image at the top of this post. Submit this page or the prize page (http://hackaday.io/prize) to all your favorite sites. No hacker should get through this day without hearing about #HackadayPrize and we can’t reach total media saturation without your help. Thanks in advance!
GET STARTED NOW
Don’t wait, put up an idea right now and tag it with “2015HackadayPrize”. We’re sending out swag for early ideas that help get the ball rolling. And as you flesh out your plans you could score prizes to help build the prototype like PCBs, 3D prints, laser cutting, etc. Make it to the finals and you’ll be looking at the five top prizes we mentioned earlier. A simple idea can change the world.
Since just about everyone who would be interested in electronics has a decent cellphone now, there’s an idea that we don’t need USB or weird serial adapters anymore. Bluetooth LE is good enough for short-range communication, and there are a ton of boards and Kickstarter projects out there that are ready to fill the need.
This board was developed as a means to connect sensors for a vintage motorcycle to an iOS device for display and data logging. A small, cheap board was needed that could be powered by a LiPo battery, and [Micah] created a board that fit his needs perfectly.
Four of the six IO pins on the ‘Tiny85 are broken out on a pin header; two are used to communicate with the BTLE module. It’s simple, fairly cheap, and can be powered by a battery. Exactly what you need if you want a wireless sensor board. All the files can be found in the Git repo and everything is open source. Not bad.
There’s a whole lot of interesting mechanics, optics, and electronics inside a Blu-ray drive, and [scanlime] a.k.a. [Micah Scott] thinks those bits can be reused for some interesting project. [Micah] is reverse engineering one of these drives, with the goal of turning it into a source of cheap, open source holograms and laser installations – something these devices were never meant to do. This means reverse engineering the 3 CPUs inside an external Blu-ray drive, making sense of the firmware, and making this drive do whatever [Micah] wants.
When the idea of reverse engineering a Blu-ray drive struck [Micah], she hopped on Amazon and found the most popular drive out there. It turns out, this is an excellent drive to reverse engineer – there are multiple firmware updates for this drive, an excellent source for the raw data that would be required to reverse engineer it.
[Micah]’s first effort to reverse engineer the drive seems a little bit odd; she turned the firmware image into a black and white graphic. Figuring out exactly what’s happening in the firmware with that is a fool’s errand, but by looking at the pure black and pure white parts of the graphic, [Micah] was able guess where the bootloader was, and how the firmware image is segmented. In other parts of the code, [Micah] saw thing vertical lines she recognized as ARM code. In another section, thin horizontal black bands revealed code for an 8051. These lines are only a product of how each architecture accesses code, and really only something [Micah] recognizes from doing this a few times before.
The current state of the project is a backdoor that is able to upload new firmware to the drive. It’s in no way a complete project; only the memory for the ARM processor is running new code, and [Micah] still has no idea what’s going on inside some of the other chips. Still, it’s a start, and the beginning of an open source firmware for a Blu-ray drive.
While [Micah] want’s to use these Blu-ray drives for laser graffiti, there are a number of other slightly more useful reasons for the build. With a DVD drive, you can hold a red blood cell in suspension, or use the laser inside to make graphene. Video below.
After making a few fabric RFID tags, [Micah] had a sewing machine sitting in her workshop completely unused. This was due at least in part to how crappy this entry-level sewing machine was; it stalled easily, unusable at low speeds, and noises like a robot with bronchitis. The solution, of course, was to replace the motor and add electronic control, turning a terrible sewing machine into one that should cost several hundred dollars more.
After some experimentations with an AC motor, [Micah] came upon a small DC motor. This, combined with an LMD18200 H-bridge, Propeller microcontroller, and a beefy power supply gave [Micah] enough torque to run the sewing machine without mechanical wheezing and grinding.
The new update to the motor allowed [Micah] several control modes for the machine, all controlled by the foot pedal: an open-loop mode is pretty much the same as the stock machine, a closed-loop mode keeps a constant RPM on the motor regardless of resistance. There are a few more interesting modes that moves the needle down when the pedal is released, perfect for detailed work.
On the hardware side, [Paul] has posted up his adapter board for a cheap, but very professional looking, optical TOSLINK sender. But if you’re feeling ghetto, you can simply use a red LED pointed just right into the optical cable.
