Hacked Gadgets Forum

January 22, 2015

KeySweeper – Microsoft Wireless Keyboard Sniffer

at 11:19 pm. Filed under Cool Gadgets, Electronic Hacks

KeySweeper - Microsoft Wireless Keyboard Sniffer_2


Wireless devices are convenient but must be used with caution. Samy Kamkar shows us how a simple wireless keyboard can be giving away your secrets. He built this KeySweeper, it is a Microsoft Wireless Keyboard Sniffer that is built into a innocent looking USB wall charger.

Via: The Hacker News

“KeySweeper is a stealthy Arduino-based device, camouflaged as a functioning USB wall charger, that wirelessly and passively sniffs, decrypts, logs and reports back all keystrokes from any Microsoft wireless keyboards (which use a proprietary 2.4GHz RF protocol) in the area.

Keystrokes are sent back to the KeySweeper operator over the Internet via an optional GSM chip, or can be stored on a flash chip and delivered wirelessly when a secondary KeySweeper device comes within wireless range of the target KeySweeper. A web based tool allows live keystroke monitoring.”


KeySweeper - Microsoft Wireless Keyboard Sniffer

January 21, 2015

Kraftwerk Fuel Cell

at 10:26 pm. Filed under Cool Gadgets

 Kraftwerk Fuel Cell


With portable electronics sucking all of your battery packs dry wouldn’t it be nice to have something that doesn’t take many hours to charge up? That is where the Kraftwerk Fuel Cell comes in. Fill it up with some off the shelf camping or lighter fuel in about 3 seconds. This isn’t a quick and dirty project, it has been in development for 7 years and it has 27 patent applications.  The Kraftwerk had a lofty goal of $500,000 and has already surpassed that by over $200,000 with 42 days left in the campaign. Surprisingly this device will be ok to take into the cabin of an plane! It will be nice to see this type of device become popular as a battery power portable power source. 

Via: Electronics Lab

“kraftwerk is a fuel cell power generator. Based on our unique and award winning microtubular metallic fuel cell technology, kraftwerk directly transforms gas into electricity. The user fills gas into an integrated tank. Whenever power is needed the gas goes into the fuel cell and is converted directly into electricity. A standard 5V USB plug allows you to connect all your electronic devices supported by the USB standard (smartphones, cameras, flashlights, …).”


Kraftwerk Fuel Cell_2


January 19, 2015

DIY Dynamic Electronic Load

at 7:33 pm. Filed under Electronic Hacks

DIY Dynamic Electronic Load


Jay_Diddy_B, a contributor on the EEVblog Forum built a great looking DIY Dynamic Electronic Load. He used LT Spice to model the design before it was built, the test result look quite good. Nice thing about the design is that there are no specialty parts, chances are you have most of the things on hand to get building right now.

“The dynamic load steps the load current so that the transient response of the power supply being tested can be observed.


0-5A maximum continuous current
0-5A pulsed current at 330Hz”


DIY Dynamic Electronic Load_1

DIY Dynamic Electronic Load_2

January 18, 2015

GIANT Flip-Dot Display

at 7:54 am. Filed under Insane Equipment


Check out this GIANT Flip-Dot Display that is certainly not coming to a store near you. The ooVoo isn’t selling displays, rather they wanted something in their booth to set them apart from the other high pixel count displays. Sometimes going mono color and low res pays off! The resolution is only 588×126 but when you consider that these are 74,088 mechanical pixels that make up the display that is pretty amazing.

“Each module has a built-in controller which are commanded via serial. To gang 189 of them into a single display, [Pat] sourced some serial to Ethernet hardware from Grid Connect. These adapters report back to a single computer via 64 Ethernet cables. That box plays back a video file, adapting it on the fly using Adobe Air to send packets to the IP addresses of the Ethernet controllers.

All of this is supplied by a trio of 56A, 24V power supplies. At a refresh rate of 30fps, when flipping all the dots at once this is a max current draw of 189 panels * 0.680 Amps = 128.52A @ 24VDC (Same power as 28 Amps @ 110VAC = 3085W).”


GIANT Flip-Dot Display

January 17, 2015

Name the Thing Contest – 266

at 6:53 pm. Filed under Contests



The prize this week is a wireless transmitter for your next project. This contest will run for one week (Jan 17- 23, 2015). Ending time is based on central standard time. To enter, identify the item above and what it can be used for. Don’t need a make or model, just what what the thing is used for.

Please do not give the answer in the comments.

Send an email to contest @ hackedgadgets.com with “Name the Thing Contest” as the subject, and the message body consisting of:

  • The name of the item in the above picture
  • An example of what the item pictured above can be used for

The winner will be chosen at random from all of the correct entries.


Added Feb 28, 2015

The item to guess was a telegraph key.

The winner is Bill C.  (there were 118 entries)


Below is a picture of the prize.



Raspberry Pi Controlling an HCCI Engine

at 6:05 pm. Filed under Complex Hacks, Cool Gadgets, Electronic Hacks



This HCCI Engine Controlling Raspberry Pi setup reads in 240,000 samples per second. I had never heard of an Homogeneous charge compression ignition (HCCI) engine other than a diesel that simply compressed the air fuel mixture till combustion although I guess that is what some of those cars from the 80 were doing when they would continue to run after the key was turned off? I had always thought that gasoline engines needed a spark plug. But like many things if you through enough tech at it you can overcome the issues. 

“The Pi is recording data about pressure in each of the engine’s cylinders, about the angle of the crank and about heat release – and on the back of that, it’s subsequently controlling the engine in real time over a controller area network”


January 16, 2015

Antarctica Arduino Instrument Cooling Project

at 12:36 pm. Filed under Cool Gadgets

  Antarctica Arduino Instrument Cooling Project_2


If you thought the Arduino was just for DIY projects have a look at this Antarctica Arduino Instrument Cooling Project. Isn’t it strange that in a place that only ever warms up to -25C that you would need to ever worry about keeping equipment cool? Well the issue is that the equipment is in an area with people and we like to have things a bit warmer than that. The dry air hinders the equipment shedding their heat as designed so a little bit of extra cooling is needed. Luckily cold air is always available, using a small pipe, cold air is sucked with a small fan into the equipment bay. The Arduino keeps track of how much cooling is needed and regulates everything automatically. The code is available but I am not sure how many people have a year round supply of cold air.



Antarctica Arduino Instrument Cooling Project

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