The headphone remote for the third generation iPod shuffle has a special chip that identifies it to the iPod itself. [David Carne] posted an in-depth report about the process he used to reverse engineering that protocol. He’s discovered that the remote uses a peculiar signal to identify it as authentic when the device powers up. We’ve talked about Apple’s use of peripheral authorization before and it seems this is no different. [David] did manage to emulate the authentication using an ATmega88. If you’ve got a shuffle 3G sitting around this info will allow you to operate it with a microcontroller in your next project.
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Cell Phone Based Car Starter, Another Take
[Dave] Had been working on a cell phone activated remote start for his car for a while when we posted the GSM car starter. While both do carry out the same job, we feel that there is enough good information here to share. He’s gone a pretty simple way, by connecting the vibrator motor leads to a headphone jack. He’s using that signal to then activate the remote start by setting off an extra fob. Though it is amazingly simple, this version does have an advantage. As [Dave] points out, his cell phone has several features which could be utilized to automate some of his car starts. He can set alarms as well as recurring calendar events to get his car started without his interaction. Lets just hope he doesn’t forget and let his car run too long unattended, especially if it is in a garage attached to his house.
Hackaday Links: December 27, 2009
Brain Controlled Game
If you’re a fan of biometrics this game is for you. It uses a homemade EEG to facilitate simple control. This is along the same lines as the Force Trainer hacks but this homebrew hardware is fun to look at. The success of the project can be seen in the video of a simple game they developed.
RF Camera Remote
[Jonny] wanted to trigger his Nikon camera remotely but was unhappy with the functionality of the IR remote. He hacked together an RF remote and receiver that still uses the IR functionality of the camera, but allows for the geographic freedom of Radio Frequency. Not as advanced as some we’ve seen but it meets his specifications.
CNC Mill
[Jan] tipped us off about a CNC mill that her friend made. The machine turned out beautifully even though very few tools were used to produce it. We love to pour over these builds so if you’ve done one, document it and send it in.
Neutering the On Demand Button
[Dan] hated his Comcast remote because the On Demand button could be hit by mistake. This was usually when trying to unpause live TV. The remainder of the show couldn’t be viewed just because the On Demand menu launched. Simplicity is king. He fixed this by placing two small paper rolls between the button and the circuit board. This way the button can still be used but only if you press pretty hard.
Advanced In Car Computer System
[youtube=http://www.youtube.com/watch?v=xqZj4ArrlhA]
[Jonathan] sent us a pretty in-depth writeup of his car computer system. This isn’t your typical quasi navigation/media system as you would usually expect with this title. What he has done is made a remotely accessible monitoring computer that can tell him everything from engine data to physical location of the car on a google map. He can start, stop, lock, and unlock the car as well, as long as the car is within a 3g network. This is pretty impressive and we see tons of uses for this, from analyzing your own data to keeping an eye on those pesky teenagers when they borrow the car.
Bendërbrau Now A Reality
It appears to be 5 o’clock somewhere as everyone seems to have only one thing on their mind. [Simon] set out to make his own Bender Brewer from the television show Futurama. But he made sure to include some key functions from episodes in the series. First and most notable Bender’s stomach contains a beer brewing kit, we think a coffee roaster would have been better, but to each their own.What we hackers love best is the ‘brains‘ of Bender, a 6502 processor controlled via remote to play a selection of 15 random sayings, including the infamous “Bite my shiny metal”, well, you know.
Finally, yes, we do realize this project was started and finished about 2 years ago. We like to think we allowed it time to ferment.
[Thanks Leo]
Virtual Theremin
[youtube=http://www.youtube.com/watch?v=eo5IRWvznWc]
[Mojo] has taken a lot of the complex circuitry out of the mix by creating a virtual Theremin. A Theremin is an electronic instrument, usually with two antennas, that senses the proximity of the player’s hands to the instrument and responds accordingly.
This design, called the AirDeck, uses a Wii remote as an IR sensor and two gloves with IR LEDs in them. Data from the Wii remote is processed by a custom Java app that converts it into sound. [Mojo’s] interface also includes some alternative options such as a turn-table scratch interface.
In the end this is still just a synthesizer/midi controller and cannot stand up to the real thing. However if you’re not an accomplished player you’ll probably never notice the difference.
Remote Uses No Batteries
How often do you change the batteries in your television remote control? Yeah, basically never. But that’s a tribute to how efficient the device is and not a reason to overlook this development. NEC is showing off a remote control that uses no batteries. Power is generated using the piezo effect that occurs when a button is pushed. That is to say, when a crystal is compressed it emits a tiny bit of electricity which is harnessed and used to power this device. This is the same principle that is used in the electricity producing sidewalks tested in Japan.
It’s pretty phenomenal that they can run the device using this method. Right now there’s only a handful of buttons but we’re sure there’ll be advances in the technology. There’s a ton of use for this if it can be miniaturized. It is using radio frequency instead of infrared, making it a useful development in wireless doorbells, garage door openers, key-less entry fobs for your car, and many more applications.
[Thanks das_coach]