DIY medical science is fun stuff. One can ferret out many of the electrical signals that make the body run with surprisingly accessible components and simple builds. While the medical community predictably dwells on the healthcare uses of such information, the hacker is free to do whatever he or she wants.
A good first start is to look at the relatively strong electrical signals coming off of the heart and other muscles. [Bernd Porr] has put together a simple bioamplifier circuit, and his students have made a series of videos explaining its use that’s well worth your time if you are interested in these things.
Continue reading “All About Biosignals”
We’re not 100% sure why this is being done, but we’re 110% happy that it is. Someone (under the name of [The X-Ray Playground]) is putting interesting devices under an X-ray camera and posting videos of them up on YouTube. And he or she seems to be adding a few new videos per day.
Want to see the inner workings of a pneumatic microswitch? Or is a running pair of servo motors more your speed? Now you know where to look. After watching the servo video, we couldn’t help but wish that a bunch of the previous videos were also taken while the devices were being activated. The ball bearing wouldn’t gain much from that treatment, but the miniature piston certainly would. [X-Ray Playground], if you’re out there, more working demos, please!
How long the pace of new videos can last is anyone’s guess, but we’re content to enjoy the ride. And it’s just cool to see stuff in X-ray. If we had a postal address, we know we’d ship some stuff over to be put under the lens.
We don’t have as many X-ray hacks as you’d expect, which is probably OK given the radioactivity and all. But we have seen [MikesElectricStuff] taking apart a baggage-scanner X-ray machine in exquisite detail, and a DIY fluoroscope (yikes!), so we’re not strangers. Who needs Superman? We all have X-ray vision these days.
Thanks [OiD] for the tip!
Like everyone else, we’re scattered all over the web. We would be silly not to be getting our information out there in as many ways as we can manage. We promise that the site always comes first, but you can also find us on Facebook, G+ (yes, we’re approved this time), twitter, and we even have a flickr group where people post pictures of their projects!
We’ve got some stuff planned for the near future that we’re excited about too.
1.We’re working behind the scenes to bring out a new template for the site. This will allow us to clean things up a bit and hopefully make browsing a little easier (searching too!). Don’t worry, we’re not changing the logo.
2.We are also planning on starting some “show and tell” sessions on G+. We love what Adafruit has been doing with theirs, and we’re hoping to join in on the fun. We realize some of you are opposed to g+, so feel free to offer other solutions to do the show and tell, we would be happy to hear them. They will be recorded and linked on the site here, so you can follow along even if you can’t join.
3.We’re bringing back the store! This time, however, we’ll have a full spread of stuff. We’re not making it in our garages anymore. For now, it will be clothing and accessories, but we’re considering doing some electronics and tools in the near future as well.
The writers are also very busy with things on the web. We’re not always locked to our keyboards slaving away. If you want to be able to follow along with us, you can find our information after the break.
Continue reading “Hackaday around the web and into the future”
SecurityTube is a site which has recently caught our attention. The site has quite a variety of videos from various sources related to security and hacking. Videos range from DEFCON talks, to documentaries, step by step how tos, and even proof of concept vulnerability videos. It’s certainly a great resource for anyone looking for something a bit more involved then a plain text writeup, and offers a way for you to catch those hacker conference talks you missed. Many of the videos come with a bit of a background information as well, so it’s far more informative then your regular YouTube videos. This site is certainly going to become a very valuable resource for many people, and is certainly a great way to kill an afternoon while still learning something.
The NoiseAXE is a miniature synthesizer based on the Picaxe 08M microcontroller. Its operating principle is fairly simple: a conductive stylus touches the leg of one of eight resistors to play one of eight notes, while a photoresistor controls the amount of modulation, creating a variable vibrato effect. While the synthesizer’s output is rather limited (the NoiseAXE isn’t exactly a Yamaha DX7), it’s still a pretty cool little project; you could use its unique sounds to add that gritty analog touch to your next electro hit. Check out the video clip below to see and hear it in action.
Continue reading “NoiseAXE minisynth”
Those of you that live in snowier climates will drool over the I-Shovel, a battery powered robot that shovels the snow off your driveway, saving you countless hours of backbreaking labor over the course of a single winter. Its inventors claim that, despite its relatively underpowered motor, it keeps the driveway clear even in heavy snowfall; the trick, apparently, is that the robot constantly monitors the amount of snow on the driveway and springs into action whenever a significant but manageable layer has built up. Unfortunately, the I-Shovel is still a prototype, but with any luck you’ll be able to actually buy one soon. If you’re impatient, of course, you could always try building your own.