[Mike Bradley] wanted to use his oscilloscope to display 8 channels of digital signals. Alas, the analog unit didn’t have this capability. Not to worry, he threw together an adapter module that does the trick. Using a PIC 18F26K20 microcontroller he inputs four or eight channel digital logic (at 5V) and filters the output to an analog signal that the oscilloscope can interpret. What you see in the photo above is the result.
[Kieran] let us know about his hybrid analog/binary clock. The circuitry behind the clock is nothing too new. An Arduino combined with a Chronodot to produce an accurate clock. What we really enjoyed however was the creative implementation of an old British Telecom Linesman’s Multimeter as the case. The analog meter acts as the seconds hand, while a another display made of LEDs diffused with stripboard is the binary clock. The end product is nothing short of ingenuitive.
Kodak managed to release a product with a big fat security vulnerability. [Casey] figured out that the Kodak W820 WiFi capable digital frame can be hijacked for dubious purposes. The frame can add Internet content as widgets; things like Facebook status, tweets, and pictures. The problem is that the widgets are based on a feed from a website that was publicly accessible. The only difference in the different feed addresses is the last two characters of the frame’s MAC address. Feeds that are already setup can be viewed, but by brute-forcing the RSS link an attacker can take control of the feeds that haven’t been set up yet and preload them with photos you might not want to see when you boot up your factory-fresh frame.
It seems the hole has been closed now, but that doesn’t diminish the delight we get from reading about this foible. There’s a pretty interesting discussion going on in the thread running at Slashdot.
Analog clocks now a days get no respect. Everyone is digital this, or binary that, and we admit it is nice to look over and see the time promptly displayed. But there’s something about the quiet ticking and ominous feeling you get when around a large intricate clock that you know some serious time has been invested.
Nostalgia feelings aside, [Alan] from Hacked Gadgets introduced us to his Gear Clock. While it’s not a new idea, and in fact we have a few around the office, his concept really inspired us. His clock is driven via stepper motor and a PIC, allowing for the time to be fairly accurate. The only small problem he mentions is the poor paint job, but we think it looks amazing regardless.
A while back we looked at [Matthias’] one-pin dot matrix printer. Now we’re jumping over to his woodworking website to feast on his wooden binary adding machine. His creation uses glass marbles as the data for this device. A resolution of up to six bits can be set on the top of the adder, then dropped into the machine as one number. With each new drop, the number is added to the total stored in the machine. The device is limited to totals less than 64. If a larger number is enter, the device wraps around back to zero by dumping the 7th bit off the end. He’s even got a master clear that allows you to easily read the stored total and evacuate the “data” from the machine.
This has quite a few less wires than the last binary adder we looked at… wait, it has no wires! But we still love it. A physical representation of what is going on with binary math really helps grasp what the magic blue smoke inside those silicon chips is all about. Don’t miss his video walk through of the adding machine embedded after the break. Can’t get enough of marbles interacting with wood? He’s got a few more projects you might enjoy. Continue reading “Binary adder will give you slivers”
Network engineer [Mario Giambanco] recently purchased a cable to move his flash off camera. Unfortunately, it ended up way too short for his purposes. Instead of purchasing a slightly longer proprietary cable, he decided to employ what he had around him: a lot of cat5e cable and ethernet jacks. He cut the cable close to the center in case things didn’t work out and he’d need to repair it. His post on building the custom ethernet flash extension cable goes into heavy detail to make sure you get it right the first time. He’s tested it using both five and 50 foot pieces of cable with no apparent lag.
This isn’t the first time we’ve seen cat5 repurposed: composite video through cat5, vga cat5 extension, and cat5 speaker cables.
In celebration of there 75th year, Esquire magazine’s October issue will feature an e-paper cover. The display will be about 3mm thick flexible paper with four shades of gray and some animated text and images. The backside will also have a display featuring a Ford ad for the new Flex. The Ford ad is essentially subsidizing this whole production. The cover isn’t finalized yet, but Boing Boing Gadgets was able to get a few more details about it from deputy editor [Peter Griffin]. The battery isn’t anything exotic and they fully expect people to break the device open and do what they want with it. It will unfortunately still require you building your own controller, but at least you get two revolutionary displays to play with for the cost of a magazine. If you’re wondering what Esquire is, they apparently showed George Clooney 2 Girls 1 Cup. So they’ve got that to celebrate too.