hackaday.com Archives - 25 February 2013, Monday

  • Critter cam hacked from an old cellphone.

    Critter cam hacked from an old cellphone.

    hackaday.com 25 Feb '13, 11pm

    [Art Barrios] kept having night-time visitors who were raiding his dog’s food storage bin. It’s a plastic tub with a lid that latches but the critters were knocking it over and popping that lid off. He wanted to find out which animal was the culprit so he hacked together an automatic ...

  • Using a flashing LCD monitor to transfer data

    Using a flashing LCD monitor to transfer data

    hackaday.com 25 Feb '13, 7pm

    We love the concept of using an LCD screen to transfer data. The most wide-spread and successful method we know of is the combination of a QR code and the camera on a smart phone. But for less powerful/costly devices data can be transferred simply by flashing colors on the screen. Tha...

  • Ubuntu with a GUI on a Beagleboard

    hackaday.com 25 Feb '13, 5pm

    The Raspberry Pi is great if you’re looking for a cheap yet powerful computer running Linux, but let’s not forget all the other ARM dev boards out there. [Adam] spent some time this weekend putting together an Ubuntu distro for his Beagleboard XM to give it the convenience of a GUI an...

  • Modifying a printer for PCB fabbing

    Modifying a printer for PCB fabbing

    hackaday.com 25 Feb '13, 1pm

    The migraine-inducing image above is the product of [Rupert Hirst]‘s attempts at home PCB fabrication. He’s using the toner transfer method – printing a circuit on a piece of transparency sheet with a laser printer, setting it on a piece of copper clad board, and sending the whole ass...

  • Building huge displays with LED strips

    Building huge displays with LED strips

    hackaday.com 25 Feb '13, 11am

    Building RGB LED displays is one of the most interesting programming and engineering challenges we see here on Hackaday. Not only do the creators of large displays and LED cubes have to deal with the power requirements of driving a whole bunch of LEDs, but there’s also the issue of ge...

  • Arduinofied QRP radio beacon

    hackaday.com 24 Feb '13, 7pm

    A while back, [m0xpd] picked up an unbearably cheap AD9850 DDS module from ebay. He turned this in to a Raspberry Pi-powered radio beacon, but like so many builds that grace our pages, the trolls didn’t like using such an overpowered computer for such a simple device. To keep those tr...

  • A remote-controlled, autonomous kite generates power

    hackaday.com 24 Feb '13, 5pm

    Autonomous: “not subject to control from outside; independent.” Remote Control: “control of a system or activity by a person at a different place” Please don’t write “remote-controlled, autonomous” as a description for anything. They pretty much mean opposite things! This is one of my...

  • Reading Sensors with Scratch

    Reading Sensors with Scratch

    hackaday.com 24 Feb '13, 3pm

    Scratch, a graphical programming language developed by MIT’s Media Lab, is an excellent tool for teaching programming. [Daniel] created an Arduino Sensor Shield to interface with Scratch, allowing for real-world input to the language. This board is a derivative of the Picoboard , whic...

  • Multibooting the Raspberry Pi

    Multibooting the Raspberry Pi

    hackaday.com 24 Feb '13, 1pm

    Those of us have been dual booting Linux, Windows, and OS X operating systems for a while will be familiar with bootloaders such as GRUB and its ilk. Surprisingly, though, we haven’t seen a bootloader for the most popular computer of the last year – the Raspberry Pi. It makes sense to...

  • Automated pH Control

    hackaday.com 23 Feb '13, 7pm

    Controlling the pH level of a solution is usually a tedious task. Adding an acid or base to the solution will change the pH, but manually monitoring the levels and adding the correct amount isn’t fun. [Reza] rigged up an automated pH controller to keep a solution’s pH steady. The buil...

  • gaming

    Hack a Day — Fresh hacks every day

    hackaday.com 23 Feb '13, 6pm

    [Matt Galisa] decided to try his hand at setting up the Belkin WeMo outlet without using a Smartphone app . The hardware is a pass-through for mains voltage which allows you to switch the plug over the network. It has a built-in WiFi module which normally connects to your home network...

  • Tickle-Me-Elmo… Frozen In Carbonite

    hackaday.com 23 Feb '13, 5pm

    We at [HAD] love any hack that combines children’s toys with science-fiction technology, so seeing a Tickle-Me-Elmo “frozen” in [Carbonite] is a definite win in our book. It’s also a great argument for joining your local Hackerspace, or just getting together with some like-minded frie...

  • An industrial RepRap

    hackaday.com 23 Feb '13, 3pm

    It may just be another 3D printer, but [Jonas] and [Simon]‘s Kühling & Kühling RepRap Industrial is a cross between a work of art and a beautiful machine tool. It also looks to be a pretty nice 3D printer, to boot. The Kühling RepRap is built out of 20mm t-slot aluminum with plastic s...

  • WeMo without a smartphone

    hackaday.com 23 Feb '13, 1pm

    this Python script used for WeMo hacking . It was originally meant to issue commands to the outlet once it had passed the initial setup. [Matt] followed along but couldn’t get an answer on the port he expected. It turns out that the device listens on a different port until the initial...

  • Watching 50 teams build something cool

    hackaday.com 23 Feb '13, 11am

    Last summer, we here at Hackaday participated in the Red Bull Creation Contest. Basically, twelve teams were given webcams and instructions to build something cool. The teams live streamed their build process, and the best of the bunch won a trip to the New York Maker Faire. [Jason Na...

  • Smartphone controlled Labyrinth

    hackaday.com 23 Feb '13, 3am

    This entire project could have been done as an app, drawing the maze and ball virtually on the screen. But that wouldn’t have been nearly as fun as what [Matt] accomplished. He built a little Labyrinth which responds to the accelerometer in his phone . Take a close look at that handse...

  • Dissecting a firmware image

    hackaday.com 23 Feb '13, 1am

    [Leland Flynn] did a great job of picking apart the firmware image for a Westell 9100EM FiOS router . Unfortunately he didn’t actually find the information he was looking for. But he’s not quite done poking around yet either. If you have never tried to make sense of an embedded Linux ...

  • NFC tags control your home’s lighting

    NFC tags control your home’s lighting

    hackaday.com 22 Feb '13, 11pm

    a home lighting hack that doesn’t require you to think about it after the initial setup. Instead of requiring the user to launch an app and select a lighting state, it uses NFC tags to select a lighting configuration. The tags can be placed in different parts of the house so that sett...

  • A Bitcoin mining example for the BeagleBone with an FPGA shield

    A Bitcoin mining example for the BeagleBone with an FPGA shield

    hackaday.com 22 Feb '13, 9pm

    If you’ve got a BeagleBone and an FPGA board you should give this Bitcoin mining rig a try . The hardware uses brute-force to solve hashes, looking for the rare sets that can be used as digital currency. This particular example is designed for the LOGi-bone which is an FPGA shield for...

  • Door hidden by bookcase is a marvel of DIY engineering

    Door hidden by bookcase is a marvel of DIY engineering

    hackaday.com 22 Feb '13, 7pm

    Possibly the most important part of the build is figuring out how to hinge all the weight a bookcase will carry. His solution was to use a set of four heavy-duty casters. He cut off the wheels from one pair and the mounting brackets from another. By welding the brackets on in place of...

  • Panelizing PCBs in Eagle

    hackaday.com 22 Feb '13, 5pm

    A lot of the board houses out there including Seeed and ITead studios have a fixed size for circuit boards before the price goes up. A one-inch square board costs the same as a much larger 5cm x 5cm board, making panelized PCBs a great way to get more boards for the same amount of mon...

  • Hackaday Links: February 22, 2013

    Hackaday Links: February 22, 2013

    hackaday.com 22 Feb '13, 3pm

    Yeah, it’s another home made Raspberry Pi case, but [Gabriel]‘s Mini Playstation 3.14 is the bee’s knees. The enclosure was once a metal gift box originally intended for gift cards. With a few whacks of a Dremel, the world finally has a new PS3 that runs Linux. Up there with The Secre...

  • Build your own dumb USB power strip

    Build your own dumb USB power strip

    hackaday.com 22 Feb '13, 1pm

    The jack on the side accepts the barrel connector from a 12V wall wart. [Kenneth] mentions that the 2.1mm jack is a standard he uses in all of his projects. Inside there’s a switch mode power supply that provides the regulated 5V to each USB port. We really like the fact that he added...

  • Arduino-controlled MIDI sequencer

    Arduino-controlled MIDI sequencer

    hackaday.com 22 Feb '13, 11am

    [Christian] wrote in to tell us about his third-generation Arduino MIDI sequencer (translated ) called the AM808 VX3. He had already laid a strong base for the project in his previous versions. But the user interface was still frustrating at times and that’s where this version comes i...

  • LED marquee uses discrete through-hole lights

    LED marquee uses discrete through-hole lights

    hackaday.com 22 Feb '13, 2am

    [Michael] built his own LED marquee using individual diodes . Despite his choice to forego the 8×8 or 5×7 modules we often see in these projects, his decision to spin a dedicated PCB saved him a lot of trouble during assembly. Sure, he still had to solder 180 leads on the 9×18 grid of...

  • Self-waking computer for DIY cloud storage

    Self-waking computer for DIY cloud storage

    hackaday.com 22 Feb '13, 12am

    Obviously this is a Wake-On-Lan type of situation, but the hardware he has chosen to use doesn’t include those features. Since he already had this TP-Link 703n on hand he decided to use it as a controller for the computer. His method is quite clever. The router is running a script tha...

  • Laser Spirograph

    Laser Spirograph

    hackaday.com 21 Feb '13, 10pm

    Here’s a weekend junk bin project if we’ve ever seen one. [Pat] used a quartet of computer fans to make his laser Spirograph . Deciding to try this simple build for yourself will run you through a lot of basics when it comes to interfacing hardware with a microcontroller. In this case...

  • Bit banging through a USB parallel port adapter

    Bit banging through a USB parallel port adapter

    hackaday.com 21 Feb '13, 8pm

    Sure, adding a microcontroller would make this dead simple. All you need to do is program the chip to emulate the printer’s end of the communications scheme. But that’s not the approach taken here. Instead the USB to RS232 (serial) converter also pictured above is used as a reset sign...

  • Framing up your electronics projects

    Framing up your electronics projects

    hackaday.com 21 Feb '13, 6pm

    The project seen here is a temperature data logger. The frosted diffuser covering everything but the LCD screen and gives you a glimpse of what’s mounted to the back panel. He connected the four different protoboard components, along with a battery pack, to each other use right angle ...

  • Retro gaming just in-case

    Retro gaming just in-case

    hackaday.com 21 Feb '13, 4pm

    You can look and look, but you won’t find a Super Nintendo inside of this retro gaming rig. [Webrow] is giving his vintage hardware a rest, and taking this all-in-one game emulator suitcase wherever he goes. The machine at the heart of his build is of course a Raspberry Pi. You really...