Hacked Gadgets Forum

April 21, 2016

DIY Volume Control Builds

at 12:22 am. Filed under Computer Hacks, Cool Gadgets, DIY Hacks, Electronic Hacks

 

 

If you are tired of reaching for your tiny volume control knob to adjust your music when using your computer look no further than these projects by Engineering Nonsense and DIY Perks. The top one uses a DIGISpark board and a rotary encoder to adjust the volume via USB and the one below uses a potentiometer to adjust the analog output of your signal feeding your amplifier.

 

 


March 15, 2016

Louis Rossmann from Rossmann Repair Group Shares Repair Techniques

at 8:42 pm. Filed under Complex Hacks, Computer Hacks

 

Louis Rossmann operates a Apple device repair business called Rossmann Repair Group in New York. His videos show a no bull view on what he thinks of Apple, Customers and running a Small Business. Even though Louis specializes in fixing Apple devices he doesn’t give them any slack in their business practices. He troubleshoots and fixes boards which allows him to install a few pieces of jumper wires and a few dollars of components instead of swapping hundreds of dollars of boards. I love the space that he works in, it is tiny and cramped since he is in a high rent area. But the amount of work that he can crank out of this space is amazing and inspiring to everyone with a home lab. He specializes in Apple devices since he can stock just a few components to fix most of their popular devices. And we know that there are lots of Apple devices out there since Apple is the most valuable company in the world.

 


March 7, 2016

MS-DOS Gaming Rig Selection

at 2:29 am. Filed under Computer Hacks

 

 

If you are into retro gaming The 8-Bit Guy goes over some of your best options. He gives some valid reasons that make MS-DOS gaming the best option if you are looking to get into playing some retro games. Nice thing is the old laptops that are needed are old clunkers that are not useful for anything modern making them super cheap. You might need to look around for a while for the optimal system though based on some of the criteria that the 8 bit guy goes over.


September 1, 2015

POV Hard Disk Drive Clock

at 3:44 pm. Filed under Computer Hacks, Cool Gadgets, Electronic Hacks

 

Using an old hard drive, some 1 watt LEDs, a complete redesign of the hard drive motor drive circuit and an Arduino Marcin Gosiewski (damago1) has built a great looking clock. The display is nice and compact since he is using a 3.5 inch hard drive as his base.

“The project involves controlling HDD motor (3 wire brushless dc electric type BLDC) using open loop control without feedback, and using back electric motor force feedback to synchronize engine pulses with optimal point in time for them. Digits are displayed by flashing 1W power LED-s behind rotating disc with painted digits. Each flash is circa 150 microseconds. Due to POV (persistence of vision) effect the digits look very stable for the user. I am not using any special controller. Only Arduino, H-bridges for driving motor coils, and circuit for obtaining BEMF (back elecric motor force) from each coil and converting it to digital (high/low) signal to drive Arduino interrupt. I have designed my own custom board which is a modified Arduino (something between UNO and PRO NANO) + added additional parts including real time clock. It is designed to fit on the back of a standard 3,5″ HDD. Software is very dependent on interrupts. I am using not only officially available interrupts (attachInterrupt) but also additional libraries to use all available timers and interrupts.”

August 5, 2015

FPGA-Based Rubik’s Cube Solver

at 2:00 pm. Filed under Complex Hacks, Computer Hacks, DIY Hacks

FPGA-Based Rubik's Cube Solver

 

Alex Whiteway, Sungjoon Park and Rameez Qurashi built a great FPGA-Based Rubik’s Cube Solver. The system uses 3 robotic grippers to manipulate the cube, a camera to “see” what state the cube is in at the beginning and an Altera Nios II FPGA computes how to solve the cube. There are lots of algorithms available, the team looks at many of them and decided to roll their own solution. It isn’t as optimized as some solutions but was one they could code in the time available. The solution the system takes is the 5 step process seen here

“The software consists of code for cube scanning and solving. The cube scanning works by reading in the raw YUV 444 data from a pixel buffer that the Altera IP video cores use to store data our camera and output it to a VGA screen. The scanning code creates 9 lowpass filter kernels at uniform locations corresponding to the expected location of cubies on each face of the cube. We use these filters on each channel of the YUV data. We chose to do this lowpass filtering to mitigate the effect of noise in individual pixels. We then created threshold values to assign a color value to each cubie based on the result of the lowpass filter of each channel. In order to reduce color misidentifications, we take 25 samples of each kernel and use the mode as the final result. For further error-checking, we compare the total amount of color values for each cubie and check it against the total number of colors of each cubie for a normal Rubik’s cube (9/color) and we rescan the cube if these numbers do not match. Because of limitations with our three arm setup only allowing us to scan 4 faces we have to use the arms to creatively rotate certain faces to present all of the cubies to the scanner, slightly scrambling the original cube orientation more in the process. This method will not allow us to present the left and right center cubies, but these are inferred in software. After the cube is finished scanning, it sends the color values of the faces to the cube solving code.”

 

 

FPGA-Based Rubik's Cube Solver_2 


May 12, 2015

Raspberry Pi Weather Station

at 11:19 pm. Filed under Complex Hacks, Computer Hacks, Electronic Hacks

Raspberry Pi Weather Station

 

Yes you can purchase weather stations that are ready to go but where is the fun in that? The Raspberry Pi Weather Station is designed for people who like to take control of their technology. 

 “WeatherPi is a solar powered Raspberry Pi WiFi connected weather station designed for Makers by SwitchDoc Labs. This is a great system to build and tinker with. All of it is modifiable and all source code is included. The most important functions are:

  • Senses 20 different environmental values
  • Completely Solar Powered
  • Has a full database containing history of the environment (MySQL)
  • Monitors and reports lots of data on the solar powered system – great for education!
  • Self contained and monitored for brownouts and power issues
  • Can be modified remotely
  • Download your data to crunch it on your PC
  • Can be modified to do SMS (Text) messaging, Twitters, webpages and more
  • Has an iPad Based Control Panel”

 

Raspberry Pi Weather Station_2

December 27, 2014

Airship Captain MK-I – Steampunk Keyboard

at 6:42 am. Filed under Computer Hacks, Cool Gadgets

Airship Captain MK-I - Steampunk Keyboard

 

If your computer keyboard looks a bit plain why not kick it up a notch? built this Airship Captain MK-I – Steampunk Keyboard that was built around an every day keyboard and by spending a bit of time and a few extra pieces you get an amazing data entry device.

“Tools used:

scissors and x-acto knives also used heavy duty cutter for cutting the plastic keys

screwdrivers

Materials:

a keyboard

glue(any kind will do, i used r21 and wood glue)

nail polish or any kind of polish will do(wood polish)

brass buttons – i used two sizes for emphasizing some keys like the ctrl and shift etc..

vintage ish looking paper(looks a bit like a scroll paper)

guitar strap pins

fabric of your choice

friction lid support – which is basicly a window hardware, but you can also use other hardware parts or make something similar your own, which is what i would have done if i would redo this.”

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