Hacked Gadgets Forum

July 21, 2015

Inside the EDSAC Computer

at 6:05 pm. Filed under Cool Gadgets

 

A look Inside the EDSAC Computer shows us how much we take for granted these days. Funny how when there are no concepts to work with the methods of storing and executing information you get things like mercury delay systems.


July 20, 2015

A look inside a 10GHz Microwave Link

at 12:38 pm. Filed under Cool Gadgets, Electronic Hacks

 

Mike takes apart a 10GHz Microwave Link. You can see that this is a really precision piece of equipment, the wave guide piece is very interesting. Not sure what the cost of this is but I can guarantee it would not be cheap. There is quite a lot of electronics on the transmitter which as you would expect is very nicely laid out, there is obviously a lot of things that have been taken into account here, the via stitching at 8:35 is interesting since there are different size holes used and there are also strange snake like patterns. This type of high frequency stuff is sure exotic when comparing it to what I would consider the basic electronics that I see on a daily basis. 

 

 


July 18, 2015

Name the Thing Contest – 285

at 3:58 pm. Filed under Contests

guess_this_285

 

The prize this week is a HMC5883L Triple Axis Compass Magnetometer Sensor so you can add some directionality to your next project. This contest will run for one week (July 18 – July 24, 2015). Ending time is based on central standard time. To enter, identify the item above and what it can be 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.

Below is a picture of the prize.

 

electronic_compass_2

 


Old Computer Hardware Instrument Ochestra

at 12:16 pm. Filed under Crazy Hacks

Old Computer Hardware Instrument Ochestra

 

There are lots of mechanical computer parts that you can bring to life to make some music. Computer are full of parts that can get this done. This Old Computer Hardware Instrument Ochestra shows us what is possible with some effort.

“This project uses old floppy drives, hard drives, and my 3D printer and uses them to do something they were never designed to do: play in one of the weirdest orchestras ever made.

While there’s currently only 3 types of instruments, the system supports pretty much anything with steppers, or anything that makes a noise on a signal pulse as percussion. An old doorbell, noisy fans, etc. can be used. machines that accept G-code through the standard Serial protocol can be used as well. “

 

July 17, 2015

Opening Garage Doors in Seconds using the De Bruijn Sequence

at 10:53 pm. Filed under Complex Hacks, Crazy Hacks

nyan

 

Many garage door openers are not very secure but there are still thousands of codes that need to be transmitted. If these codes were being entered manually it would take a long time to go through all the possibilities but of course we could just use a small processor to run through the combinations. Samy used a kids toy that had all the required hardware to do the task, this could have also been done with a dev board and a small display and a transmitter but it wouldn’t have looked as cool.

The really interesting thing that Samy discovered was how the garage openers look for valid codes, it isn’t a unique entry that is tested. For example if enter the wrong 4 digit code into your home alarm system you would need to wait till it timed out or press a clear key before you attempt a new code. This is not the case with these garage door systems. It just looks at the last X number of bit sequences. The De Bruijn Sequence (here is an online generator to play with) ensures that all sequences can be found within the stream of characters but not in order. This means that the actual amount of data that was needed to be transmitted was less than 5% of the entire regular bruit force test suite.

 

 


July 15, 2015

PIC24 Dev Board Design

at 5:05 pm. Filed under Electronic Hacks

PIC24 Dev Board Design

 

Dev boards are great when trying to get a high pin count (non DIP package) microcontroller prototyped for your next project. There are some SMD breakout boards (you can see one of those in the picture connected to his dev board). But working with just a breakout board can be a bit of a pain since the connections to the board can be hard to maintain since the package is so small. If you are in need of a breakout board for a PIC24 this might be just what you need.

Via: Dangerous Prototypes 

July 13, 2015

Laser Cut Tortilla Record

at 6:53 pm. Filed under Crazy Hacks

Laser Cut Tortilla Record

 

Don’t play with your food. Ok, lets make an exception if you can make your food playable on a record player it is ok.  Check out this interesting Laser Cut Tortilla Record by . A laser machine actually cuts playable audio tracks into this tortilla.

Via: Adafruit

 

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