Arduino + Java + Joystick

November 19, 2010 by Mike Szczys 14 Comments

Interfacing your own hardware with a Java app couldn’t be easier than this example. [Pn] created this proof-of-concept using an Arduino, an analog joystick from a gaming controller, and a few lines of Java code. The Arduino reads an ADC value from the joystick’s x-axis and transmits it over the serial connection ten times a second. The Java program triggers on every serial event, parsing the data based on the @ symbol that the Arduino sends as a start and end condition.

We like this kind of example because there’s nothing extra involved. It lets you take the concept and run with it in any project imaginable. Be it a more complicated Joystick, or simple sensors that you’d like to interface with.

Nixie Tubes Live In A Cool Box

November 13, 2010 by Mike Szczys 8 Comments

This set of four Nixie tubes display the number of people following bildr on Twitter. That’s neat; it uses an Arduino and some open source driver boards. But what caught out eye is the enclosure. The image above shows only half, but when assembled it’s a nice little cube that keeps the insides safe. This was laser cut using the Ponoko service and kicks off a design contest. Come up with the best idea for using 4 Nixies, their drivers, and $50 worth of Ponoko’s services and they’ll give you the materials to make it happen.

The Transistor Takes On The Machine

November 7, 2010 by Jakob Griffith 3 Comments

It only took 4 hackerspaces, but we finally get to see a zombie movie inspired project; hackerspace The Transistor Takes on the Machine with a Dawn/Shawn of the Dead movie theme. Race cars disguised as zombies swarm toward the players, who then use laser tag like guns to “shoot” down the approaching undead. The whole thing is a mess of Arduinos communicating with xBees to a central iMac G3, but it all comes together rather well and is promised to be released open source.

Now all that’s left is deciding which hackerspace wins the competition. Who do you have your money on?

[Thanks Deven]

Test Beds And Jigs With Pogo Pins

November 4, 2010 by Devlin Thyne 21 Comments

Pogo pins – spring-loaded pin contacts are pretty fun to play with and even cooler when they get used in electronic devices like Adafruit and SparkFun’s test jigs. Check after the break for how these two companies have created their own production hacks. Continue reading “Test Beds And Jigs With Pogo Pins” →

Magnetic Card Stripe Spoofer

November 2, 2010 by Mike Szczys 26 Comments

This hodge-podge of components is capable of spoofing the magnetic stripe on a credit card. [Sk3tch] built an electromagnet using a ferrous metal shim wrapped in enameled magnet wire. While he was doing the windings [Sk3tch] connected his multimeter to the metal shim and one end of the wire, setting it to test continuity. This way, if he accidentally scraps the enamel coating and grounds the wire on the metal the meter will sound and alarm and he’ll know about the short immediately. An Arduino takes over from here, actuating the coil to simulate the different data sections of a magnetic stripe.

From his schematic we see that the electromagnet is directly connected to two pins of the Arduino. We haven’t looked into the code but is seems there should be either some current limiting, or the use of a transistor to protect the microcontroller pins (we could be wrong about this).

[Sk3tch’s] realization of this spoofer can be made quickly with just a few parts. Card data must be written in the code and flashed to the Arduino. If you want to see what a more feature-rich version would entail take a look at this spoofer that has a keypad for changing data on the go.

[via Lifehacker]

Hackvision Is Build-your-own Retro Game

October 24, 2010 by Mike Szczys 23 Comments

If you wanted to try your hand at programming some retro games Hackvision can jump-start the process. It is an Arduino-based game console in a controller format. You get four directional buttons and one function button. It has two RCA jacks for mono audio, and black and white video.

We’re happy to find that there’s information about game development that will help you follow along with the Space Invaders and Pong examples. The system uses the Arduino TVout library for video, which is robust and fairly easy to interact with. But once you see the game play in the video after the break it’ll be hard to resist building one of these. Don’t forget, this is Arduino based. If you already have an Arduino that uses an ATmega328 you just need to build the audio, video, and button circuits. Continue reading “Hackvision Is Build-your-own Retro Game” →

New Dynamic Duo, Arduino And Eclipse

October 20, 2010 by Jakob Griffith 21 Comments

There are a lot of solutions to programing an Arduino: the default avr-g++, Studio, etc. But [Sandeep] let us know about using one of the more powerful IDEs out there, Eclipse, to do the same. We’ve already outlined why Eclipse is a great IDE but now the fact that you can use it in your MCU based projects adds to its usefulness and already large feature list. However, don’t be turned off by [Sandeep’s] tutorial. While it is aimed at people who are completely new to setting up an IDE and working with an AVR, the tips certainly can benefit even the most experienced hacker.