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  / // /__ _____/ /__  ___ _  / _ \___ ___ __
 / _  / _ `/ __/  '_/ / _ `/ / // / _ `/ // /
/_//_/\_,_/\__/_/\_\  \_,_/ /____/\_,_/\_, / 
retro edition                         /___/ 
Now optimized for embedded devices!
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Making a Bluetooth Headset into a Wireless Music Streaming Device

posted Aug 31st 2011 8:01am by
filed under: cellphones hacks, wireless hacks

This bluetooth headset hack, although simple, may provide some hacking inspiration. Turning a Bluetooth headset into a wireless input for one’s stereo is definitely something that makes one think “why didn’t I think of that?” It’s also good if you’ve got a tight hacking budget as there’s not a lot of stuff to buy.

In addition to a possibly broken headset, a 3.5mm stereo plug and some wires are needed for this. Throw in some tools that every good hacker should have around like a soldering iron and glue gun and you’re ready to get started. [Dex] does a good job of describing the process, from disassembling the headset to wiring the stereo plug to it. When making the conversion, one must remember to bridge the left and right output channels, as most headsets only output a mono signal.

There’s not a whole lot else required to do this hack.  Could be a good beginner project. For another Bluetooth-based hack using scrounged equipment, check out this Cellphone controlled retro-radio hack.

USB controller for multiple servos

posted Feb 4th 2011 6:00am by
filed under: Microcontrollers


[dunk] constructed an easy to use AVR-based USB controller with the ability to drive up to six R/C hobby servos at once.  While the USB-powered Atmega8 he used supplies the necessary PWM signaling for all of the servos, an external power supply rated up to 30v at 3A is necessary to provide the 5v of power each servo requires.  His project is an extension of the USB servo controller built by [Ronald Schaten] and includes several significant upgrades.  The addition of 5 more servos aside, [dunk] switched to AVRlib routines for multi-servo control and PWM management, as well as added the aforementioned power supply to prevent an excessive current draw on the USB port.  His tutorial includes a complete parts list, Eagle PCB schematic, the required USB servo source code, as well as a sampling of commands that can be issued to the servo controller.

Pandora dev unit unboxed

posted Nov 28th 2008 3:00pm by
filed under: handhelds hacks, news


[skeezix] has got his hands on one of the first Pandora dev kits to make it out the door and took a few photos. This is 1 of the 20 MK2 devboards that were produced. Although, not final it certainly is close to the version they’ll be shipping. Pandora is a Linux based portable game console. The main chip in the clamshell device is a TI OMAP3530. It has OpenGL hardware acceleration and an 800×480 touchscreen. A QWERTY keyboard is included along with analog and digital game controls. WiFi, bluetooth, USB host, TV-out, and dual SDHC card slots round out the package. The team has already presold 4000 devices.

WiMax antenna with auto-positioning system

posted Jun 8th 2010 1:00pm by
filed under: wireless hacks

[Andrew] certainly brings a bit of a James Bond feel to connecting to your WiMax base station. He built this antenna along with an auto-positioning system to get the strongest signal possible. The device, which appears a bit fragile, breaks down into a nice little case. When you get to your next checkpoint you can set it up and the stepper motor along with an ATtiny2313 will rescan to get you on with your mission as fast as possible. This is one of our favorite antenna builds so far, and we’ve seen a lot of hacked antennas. Don’t miss the action-packed trailer after the break.

Head-mounted light display takes holiday cheer on the go

posted Dec 18th 2011 4:01pm by
filed under: arduino hacks, Holiday Hacks, led hacks


Most holiday light displays we see this time of year are stationary, or at least confined to somebody’s home. [Marco Guardigli] wanted to take his lights on the go, and thought that a light up winter hat would be perfect for showing off his holiday spirit.

In the winter he sports a sturdy wool felt hat, which was ideal for mounting LEDs. He picked up a basic LilyPad Arduino that uses a small LiPo battery as its power source, mounting it inside the hat with a bit of glue. He wired up a series of SMD LEDs around the perimeter of the hat which blend in quite well in the felt, leaving them nearly invisible to the naked eye when powered off. When he flips the LilyPad on however, there’s no missing the bright blue LEDs nor the music emanating from the tiny speaker he also mounted in the hat.

We think that [Marco's] display is great, and if we were to build one, we would likely include a copious amount of red and green LEDs in ours. Do any of you take your Christmas light display on the go? We’d love to see them, so be sure to let us know in the comments.

Stick around to see a short video of [Marco’s] hat in action.

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