The Hackaday Summer Camp Survival Guide

It’s a feature of summer for us, the round of hacker camps in which members of our community gather in fields and spend a few days relaxing and doing what we do best. This summer I’ll have been to four of them by September, one of which was unexpected because a last-minute ticket came my way. For Hackaday they’re a chance to connect with our readers and maybe see come of the coolest stuff in person.

If you consult the wiki for your hacker camp of choice then you’ll usually find a page of tips about what to bring. Starting with a tent and a sleeping bag and probably going on to sunscreen, a hat, and maybe how to avoid dehydration. I’d probably add spare toilet paper and disinfectant spray in case the toilets are nightmarish. All very practical stuff, but expressed in a dry list format that doesn’t really tell you what to expect. A hacker camp can be overwhelming if you’ve not been to one before, so how do you get the best out of it? Here are a few tips based on our experience. Continue reading “The Hackaday Summer Camp Survival Guide”

CCCamp: 5,000 Hackers Out Standing In Their Field

What do hackers do on vacation? What do hackers do whenever they have free time? What do you love to do? That’s right. But how much more fun would it be if you could get together with 5,000 other hackers, share your crazy projects and ideas, eat, drink, dance, swim, and camp out all together for five days, naturally with power and Internet? That’s the idea of the Chaos Communication Camp, and it’s a once-in-four-years highlight of hacker life.

Held not too far outside of Berlin, the Camp draws heavily on hackers from Europe and the UK, but American hackers have been part of the scene since almost the beginning. (And Camp played an important role in the new-wave hackerspaces in the US, but that’s another story.) It’s one thing to meet up with the folks in your local hackerspace and work together on a project or brainstorm the next one, but it’s entirely a different thing when you’re drawing on hackers from all over the world. There was certainly more to see and do at Camp than you could in a month, not to mention in only five days, and this could be overwhelming. But if you dig in, the sense of community that came from shared effort and shared interests was the real take-home. And nearly everything at Camp should have its own article on Hackaday.

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Hackaday Podcast 033: Decompressing From Camp, Nuclear Stirling Engines, Carphone Or Phonecar, And ArduMower

Hackaday Editors Mike Szczys and Elliot Williams are back from Chaos Communication Camp, and obviously had way too much fun. We cover all there was to see and do, and dig into the best hacks from the past week. NASA has a cute little nuclear reactor they want to send to the moon, you’ve never seen a car phone quite like this little robot, and Ardupilot (Ardurover?) is going to be the lawn mowing solution of the future. Plus you need to get serious about debugging embedded projects, and brush up on your knowledge of the data being used to train facial recognition neural networks.

Take a look at the links below if you want to follow along, and as always tell us what you think about this episode in the comments!

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Direct download (60 MB or so.)

Continue reading “Hackaday Podcast 033: Decompressing From Camp, Nuclear Stirling Engines, Carphone Or Phonecar, And ArduMower”

The Tens Of Millions Of Faces Training Facial Recognition; You’ll Soon Be Able To Search For Yourself

In a stiflingly hot lecture tent at CCCamp on Friday, Adam Harvey took to the stage to discuss the huge data sets being used by groups around the world to train facial recognition software. These faces come from a variety of sources and soon Adam and his research collaborator Jules LaPlace will release a tool that makes these dataset searchable allowing you to figure out if your face is among the horde.

Facial recognition is the new hotness, recently bubbling up to the consciousness of the general public. In fact, when boarding a flight from Detroit to Amsterdam earlier this week I was required to board the plane not by showing a passport or boarding pass, but by pausing in front of a facial recognition camera which subsequently printed out a piece of paper with my name and seat number on it (although it appears I could have opted out, that was not disclosed by Delta Airlines staff the time). Anecdotally this gives passengers the feeling that facial recognition is robust and mature, but Adam mentions that this not the case and that removed from highly controlled environments the accuracy of recognition is closer to an abysmal 2%.

Images are only effective in these datasets when the interocular distance (the distance between the pupils of your eyes) is a minimum of 40 pixels. But over the years this minimum resolution has been moving higher and higher, with the current standard trending toward 300 pixels. The increase is not surprising as it follows a similar curve to the resolution available from digital cameras. The number of faces available in data sets has also increased along a similar curve over the years.

Adam’s talk recounted the availability of face and person recognition datasets and it was a wild ride. Of note are data sets by the names of Brainwash Cafe, Duke MTMC (multi-tracking-multi-camera),¬† Microsoft Celeb, Oxford Town Centre, and the Unconstrained College Students data set. Faces in these databases were harvested without consent and that has led to four of them being removed, but of course, they’re still available as what is once on the Internet may never die.

The Microsoft Celeb set is particularly egregious as it used the Bing search engine to harvest faces (oh my!) and has associated names with them. Lest you think you’re not a celeb and therefore safe, in this case celeb means anyone who has an internet presence. That’s about 10 million faces. Adam used two examples of past CCCamp talk videos that were used as a source for adding the speakers’ faces to the dataset. It’s possible that this is in violation of GDPR so we can expect to see legal action in the not too distant future.

Your face might be in a dataset, so what? In their research, Adam and Jules tracked geographic locations and other data to establish who has downloaded and is likely using these sets to train facial recognition AI. It’s no surprise that the National University of Defense Technology in China is among the downloaders. In the case of US intelligence organizations, it’s easier much easier to know they’re using some of the sets because they funded some of the research through organizations like the IARPA. These sets are being used to train up military-grade face recognition.

What are we to do about this? Unfortunately what’s done is done, but we do have options moving forward. Be careful of how you license images you upload — substantial data was harvested through loopholes in licenses on platforms like Flickr, or by agreeing to use through EULAs on platforms like Facebook. Adam’s advice is to stop populating the internet with faces, which is why I’ve covered his with the Jolly Wrencher above. Alternatively, you can limit image resolution so interocular distance is below the forty-pixel threshold. He also advocates for changes to Creative Commons that let you choose to grant or withhold use of your images in train sets like these.

Adam’s talk,¬†MegaPixels: Face Recognition Training Datasets, will be available to view online by the time this article is published.

UbaBOT Mixes Up 50 Cocktails To Quench CCCamp Thirst

[Steffen Pfiffner’s] tent during the Chaos Communication Camp is full of happiness delivered by something greater than alcohol alone. He’s brought a robot bartender that serves up a show while mixing up one of about 50 cocktail recipes.

The project is the work of five friends from Lake Constance (Bodensee) in southern Germany, near the borders with Switzerland and Austria. It started, as many projects do, with some late night drinking. The five were toiling to mix beverages more complex than your most common fare, and decided to turn their labors instead to robot making.

Since 2012, the project has gone through five revisions, the most recent of which the team calls Uba BOT. Delightfully, the cup tray which moves left and right on the front of the machine is connected using a strain gauge. This provides a way for the robot to sense the presence of a cup to avoid dispensing ingredients all over the bar itself. It also provides a feedback loop that verifies the amount of liquids and volume of ice added to the cup. Once everything’s in the cup, a rotary milk frother lowers itself into position to stir things up a bit.

A Raspberry Pi is in control of eighteen pumps that dispense both liquor and mixers. The team is still trying to work out a way to reliably dispense carbonated mixers, which so far have been a challenge due to over-excited foam. The software was originally based on Bartendro, but has since taken on a life of its own as these things often do. The first time you want a drink, you register an RFID tag and record your height, weight, and age which keeps track of your estimated blood alcohol content based on time and your number of visits to the robot. The firmware also tracks the state of each ingredient to alert a meat-based bar attendant of when a bottle needs replacing.

Join us after the break to see an explanation of what’s under the hood and to watch Uba BOT mix up a Mai Tai.

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Hello: A Mini Badge For CCCamp

Badgelife culture is our community’s very own art form, with a plethora of designs coming forth featuring stunning artwork, impressive hardware, and clever software tricks. But sometimes a badge doesn’t need a brace of LEDs or a meme-inspired appearance to be a success, it just needs to be very good at what it does.

A perfect example is [Gavan Fantom]’s Hello mini badge. The hardware is fairly straightforward, it’s just a small square PCB sporting a LPC1115 microcontroller, 8Mb Flash chip, piezo speaker, and an OLED display. Its functionality is pretty simple as well, in that it exists to display text, images, or short animations. But the badge hides a very well-executed firmware that provides a serial terminal and zmodem file upload capability as well as an on-device interface via a small joystick. Power comes from a 500 mAh lithium-polymer cell, for which the badge integrates the usual charger and power management hardware.

There’s a variety of possibilities for the badge, but we’d guess that most owners will simply use it to display their name with perhaps a little animation. A bit of nifty processing of some video could perhaps get something approaching watchable video on it though, opening up the entertaining possibility of displaying demos or other video content.

[Gavan] will have some of the Hello badges at the upcoming CCCamp hacker camp in Germany if you’re interested, and should be easy enough to find in the EMF village.

CCC 2015: Moon Robots, Data Destruction, And An Epic Thunderstorm

Chaos Communication Camp 2015 is over, and most everyone’s returned home to warmer showers and slower Internet. In this last transmission from Camp 2015, we’ll cover the final two days of talks, the epic thunderstorm, and give a brief rundown of the challenges of networking up a rural park in Brandenburg.

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