Ever wanted to play drums on your iOS device — without actually destroying it? Check out this great Instructables project from aymans:
Multi-touch is a wonderful thing. But sometimes, the act of creating is done with a tool, like a drumstick or a stylus. It turns out, it’s easy to make a set of drumsticks for a modern capacitive device (like an iPad). You just need a few special things.
The sticks work in any application since they send the same sort of signal your hand does. I made a few iPad apps that are being submitted to the Apple store…till they become available, the Magic Piano is super fun with them.
This is an Arduino based iPod hackaudio project that allows you to select tracks for playback from an attached iPod Touch simply by placing cards on flat upper surface of the machine.
The cards can be placed in small plastic boxes with a picture of the album cover on one side to make small blocks more suitable for small hands to manipulate. Originally designed for disabled child. Since then people, teachers I know and so on, have been urging me to “do something with it” so this is an easier to set up and use quasi “tablet” version.
Membrane Matrix Keypad + extras – 3×4– Punch in your secret key into this numeric matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3×4 grid. It’s made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad.
We include a 7-pin extra-long header strip so you can plug this into a breadboard with ease.
Hot on the heels of v1.6, Circuit Playground’s 1.6.1 update takes full advantage of the iPhone 5′s four inch display, adding newly optimized layouts throughout the app. This latest update also streamlines user interface elements for all iOS devices.
Plus – every calculator & converter now remembers your input values and mode selections, so you can always pick up where you left off from a previous session. And if need be, all input values can be reset via the Options menu. This feature was available for a few calcs previously, but now works throughout the app.
Be sure to grab the 1.6.1 update from the App Store if you haven’t already. And if you did – I deem you awesome!
Enter any three of the four values: Vin, Vout, R1, & R2 – and your voltage divider is ready for the breadboard.
• Heat Sink Calculator
Make sure that heat sink can keep your component (relatively) cool while in use – provide the top four values, then enter Power or Junction Temp to calculate the remaining. Temperature can be given in Fahrenheit or Celsius.
• Wavelength to Color Converter
It’s a little tough to visualize an LED’s color when you only have its light wavelength go by. Input that nanometer value into the Wavelength to Color Converter for a preview of the color + relevant RGB/Hex values. Alternatively – use the color slider to find a color’s wavelength.
• Trace Width Calculator
Ensure your PCB traces can handle your circuit’s current – calculate the required trace width by providing 4 values for your project. Includes unit options for temperature & length values.
• Quarter Wave Calculator
Find the antenna length you’ll need to use for a given frequency, or the corresponding frequency for a given length. Length can be specified in feet/inches or metric value.
• New Pinouts for connectors, ICs, & boards
We’ve added a bunch of useful pinout diagrams to the app including – Raspberry Pi GPIO, MAX232, LM386, 74HC595, USB (A&B), RS232 (DB-9), VGA (DB-15), Ethernet (RJ-45), 16×2 LCD, 78xx, & 78Lxx
• Show & Tell more!
Show & Tell now lets you share multiple pics & video with Adafruit. Choose up to 3 photos and/or 1 video clip to represent your project – tap a thumbnail image to review each piece of media or remove it from your submission. Of course you can also use your iPad/iPhone/iPod’s camera to grab new pics or video – each one will automatically be saved to your device’s photo library.
Also – Circuit Playground 1.6 also adds support for iOS 6 & requires iOS 4.3 or later. Changing calculator pages on iPad can now be done with a two-finger swipe across the main view.
Experience the magic of PIXEL’D, an intuitive and absorbing drawing and animation app that allows you to create amazing, one of a kind pixel art. Create images straight from your imagination or use Disney character pixel stamps to complete your scenes. Hear each pixel ‘pop’ as you create your picture, and experience the joy of seeing your images come to life with an easy frame-by-frame animation system. Share your art with friends and family through a wide range of social networking options. With regular updates and in-app purchases, PIXEL’D is an inexhaustible source of entertainment for artists of all ages and abilities.
Though the first one hasn’t even come off the production line yet, the makers of a new “telepresence” robot called the “Double” attracted more than $1 million worth of preorders within three weeks.
“It’s a Segway for your iPad,” quipped David Cann, founder and chief executive of Miami-based Double Robotics, at Y Combinator’s Demo Day in August, where he showed off the robot’s capabilities to investors.
The arrival of the External Accessory Framework was seen, initially at least, as having the potential to open the iOS platform up to a host of external accessories and additional sensors. Sadly, little of the innovation people were expecting actually occurred, and while there are finally starting to be some interesting products arriving on the market, for the most part the External Accessory Framework is being used to support a fairly predictable range of audio and video accessories from big-name manufacturers.
The reason for this lack of innovation is usually laid at the feet of Apple’s Made for iPod (MFi) licensing program. To develop hardware accessories that connect to the iPod, iPhone, or iPad, you must be an MFi licensee.
Eight Op Amp Circuits total – including such classics as: Inverting Amp, Non-inverting Amp, Summing Amp, Differentiator, Integrator, Differential Amp, Current Source, + a Buffer schematic thrown in for good measure.
Op Amp Pinouts
When you’re ready to build that operational amplifier circuit, swipe on over to the Op Amp Pinout Reference where you’ll find layouts for the most common single, dual, & quad op amp IC packages.
Show & Tell
Got a finished project you’d like to show off? We want to see it! Circuit Playground’s new Show & Tell section lets you easily snap a pic or choose one from your photo library, then send it to Adafruit along with your project description.
Touch schematic components to change values.
On any calculator that includes a schematic, you can now edit input values by tapping the relevant component symbol.
+ Additional improvements throughout
You’ll also notice a quite a few other tweaks and improvements added to make the app easier to use.
Version 1.5 is a free update for all current users – and as always, can be downloaded from the App Store. Thanks again to everyone who purchased Circuit Playground + all the helpful feedback & reviews – do stay tuned for more awesome!
I did a very similar thing with the keycard to my workplace a while ago. It read fine even through the metal of the stock iPhone back. However, though the back seemed to close fine on the pieces of the keycard, it caused the glass to bow slightly and the glass eventually broke when the phone suffered a light impact. I’m going to try again with a custom wound antenna and Kapton tape.
DEFCON Kids is a not-for-profit dedicated to teaching kids around the world how to love being white-hat hacker. A white-hat hacker is someone who enjoys thinking of innovative new ways to make, break and use anything to create a better world.
DEFCON Kids 2 will be July 27-29, 2012 at the Rio Hotel & Casino in Las Vegas as part ofDEFCON, the largest hacker gathering in the world. Confirmed speakers include Chris Anderson, Editor-in-Chief of Wired Magazine; Cory Doctorow, sci-fi author; Joe Grand, famous hardware hacker; and Marcia Hoffman, an EFF lawyer. Partners include AllClear ID, the DoD, Hackid, AT&T, Max Kelly, EFF and the NSA.
One year ago at DEFCON Kids 1, CyFi released a new class of zero-day vulnerabilities called Time Traveler. The Time Traveler bug exists across all major mobile platforms. It is a mistake made by thousands of app developers. At the same time, Time Traveler is a critical bug, allowing for exploit code to run on servers. CyFi and AT&T responsibly notified app developers about the Time Traveler bug, but few have fixed the problem.
It is important that this bug be fixed and it is easy to do so. App developers just need more awareness about the importance of security. That is the point of this contest (and cuz it’s fun). CyFi loves the mobile app world and wants it to survive. If you do too, help her find more vulnerable apps and notify the developers.
We found that when placed under one of our replacement iPhone backs, the tag didn’t read, so we fiddled with tape and paper until there was enough air space between the metallic bulk of the phone and the RFID antenna.
One post-it note and four layers of packing tape later, the tag scans just fine from within the back of the iPhone, even with 4G and wifi turned on.