Hacked Gadgets Forum

February 4, 2015

Open Source Talking Multimedia Clock

at 3:14 pm. Filed under Cool Gadgets, Electronic Hacks

 

This Open Source Talking Multimedia Clock looks like a fun clock platform that could be developed into many interesting projects.

“The processor is based on the Arduino Uno platform, the display is a LoL Shield and the speech engine is the SpeakJet chip. Various analog sensors and audio circuits have been cobbled together. The firmware has been developed in C using the AVR gcc compiler.”

 


February 2, 2015

Groundhog Day Alarm Clock Build

at 11:23 pm. Filed under DIY Hacks, Electronic Hacks

Groundhog Day Alarm Clock Build

 

Check out this fun Groundhog Day Alarm Clock Build that built. It is sure to bring back some movie memories!

Via: Gimodo

“The Groundhog Day Alarm Clock consists of a Panasonic RC-6025 flip clock modified to play the audio from the movie Groundhog Day when the alarm goes off.

The reason I have created this device is because Groundhog Day (both the day and film) holds a special place in my heart. I first met my life-partner-in-crime on February 2nd, and this Groundhog Day is going to be the 10th anniversary of our time together. What better way to commemorate it than by recreating a heavily symbolic object from such an iconic movie?”

 

 

Groundhog Day Alarm Clock Build_2

 


January 29, 2015

DIY AVR Function Generator

at 10:36 pm. Filed under DIY Hacks, Electronic Hacks

DIY AVR Function Generator

 

The Big One built this DIY AVR Function Generator, it is housed in a nice looking Hickory enclosure, has some buttons for adjustments and a 16×2 text LCD as a display. He is also working on a power supply that will be housed in the same enclosure type. 

“What this function generator can do: 

  • Generate square waves at up to 10MHz, either directly output from an AVR’s pin, or buffered via an op amp (the slew rate of the op amp will determine the upper limit of the square wave output). The square wave output is in the range 0 – 5v.
  • Generate a number of sampled waveforms from between 2.56kHz and 10Hz (in 10Hz increments). Sampled waveforms include Sine, Triangle, Sawtooth (up and down), Staircase (up and down), and Square. These waveforms are output in (user selectable) 0 – 5v or -5 – 5v range.
  • Generate a PWM signal appropriate for controlling hobby servos. The user selects a PWM phase between 500us and 2540us., with a set period of 20000us.”
 

 

DIY AVR Function Generator_2

 


January 24, 2015

Arduino Powered Thermostat

at 9:43 pm. Filed under DIY Hacks, Electronic Hacks

Arduino Powered Thermostat

 

Your thermostat is probably one of the most boring pieces of technology in your house. This Arduino Powered Thermostat lets you take control over your furnace and make it work the way you want it. 

“The three zone system  is also equipped with DS18B20 temperature sensors, DS1307 RT Clock, 16×2 character display, LCD keypad Arduino shield, along with various miscellaneous wire leads, connectors and resistors. 

On the software side, hbomb9000 used an add on for SublimeText known as Stino, as well as two libraries: OneWire and DallasTemperature.”

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 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.

Features:

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

 

DIY Dynamic Electronic Load_1

DIY Dynamic Electronic Load_2

January 17, 2015

Raspberry Pi Controlling an HCCI Engine

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

 engine

 

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”

 

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