PC Magazine has published their top 10 greatest hacks of all time. Seriously, just ten *eyeroll. It is fairly cute though and there are a few interesting tidbits. Most notably, [Ben Heckendorn] made the list with one of his portable units. We’re a bit surprised that they didn’t choose the fantastic work he did on the one handed controller, since it could actually help people play who previously couldn’t.
Electronics parts can be a pain to choose. It’s often hard to tell from manufacturers’ datasheets if a part will fit your design. We auditioned six different tactile switches to find a cheap button to use in upcoming projects. A tactile switch, also called a momentary button or push-to-make switch, is commonly used for input and microcontroller resets. This type of button creates a temporary electrical connection when pressed.
Footprints for most of these buttons are available in the Cadsoft Eagle library switch-tac, or in the Sparkfun parts library under TAC_SWITCH. Buttons in the image above are discussed from left to right. Continue reading “Parts: Tactile Switches For Your Next Project”
What is it about pseudo random flashing LEDs that make us go gaga? We don’t know, but there’s definitely something there. [seligtobiason] has this obsession too. After seeing several more complicated projects, he created this elegant, simple, and cheap piece of art. The entire thing is pretty much just some flashing LEDs, some resistors, and a power supply. It really isn’t anything groundbreaking, but the effort and cost involved are tiny compared to some other similar projects. sure, it doesn’t synchronize over time based on input like the firefly project. But for a quick cheap project, the results are quite nice.
We would put one in our home, right next to the node blinky.
The final day for entries in our Hack a Day T-Shirt Design Contest is today. Get your entries in by midnight Pacific time and you could win a Dash Express (or non-US prize).
The Open Organisation Of Lockpickers (TOOOL) is planning a new annual gathering for lockpickers. October 9-12th they will hold the first ever LockCon in Sneek, Netherlands. The event was spawned from the Dutch Open lockpicking championships, but they’ve decided to expand beyond just competition into a full conference. This year the conference is limited to just 100 lockpickers, technicians, manufacturers, hackers, and law enforcement members. They’ll compete in picking competitions, safe manipulation, and key impressioning.
On a related note: Organizer [Barry Wels] just became the first non-German to win an SSDeV competition with his key impressioning skills. We covered key impressioning when we saw his talk about high security keys at The Last Hope. He says it’s only been about two years worth of study and 500 keys to become a master. He managed to open the lock in 5:13 filing two whole keys during that time.
[photo: Rija 2.0]
Our love for solar projects continues on with this method to make your own solar panels. [Mike] built a 60 watt solar panel from individual solar cells he purchased off eBay. Procuring parts off of eBay normally causes others hardship when they try to duplicate the project, however in this case there are so many types of cells people can use to produce their own unique solar panel. Even cells that are extremely damaged my still be used, as in this example. To charge a 12 volt battery the number of cells in series just needs to be 16-18 volts, and the rest in parallel will supply more current. Charging a battery without a charge controller is not recommended, but commercial ones are easily had. Those not interested in jumping all the way in with solar may want to test the waters by building their own panel and putting it to use as a charging station for your portable gadgets.
We’re skeptical about most technology that’s designed to help remote villages (yes, even that one), but these new UAV medical couriers look like a great idea. The turn around time for medical sample analysis in remote South African villages can be excruciating. A team of engineers have attempted to adapt two different unmanned aerial vehicles for transport of medical samples. These could be either blood or saliva that needs testing. Test results would be relayed via phone as they are now, but the initial transport time would be much faster. The larger of the two UAVs can carry up to 500g; that’s enough to haul two units of blood for transfusion. The UAVs can be launched by hand and can survive winds up to 45kph. They fly their preprogrammed routes autonomously and don’t require any operator intervention. The team has flown two successful trials and is waiting for approval from the South African Civil Aviation Authority. For safety, they’re only transporting samples that can be sterilized before flight. New Scientist has a short video after the break. Continue reading “UAV Medical Couriers”
