Hacked Gadgets Forum

July 17, 2015

Opening Garage Doors in Seconds using the De Bruijn Sequence

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



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


July 11, 2015

HVAC Blown Control Board Repair

at 12:37 pm. Filed under DIY Hacks


Todd takes a look at a blown HVAC control board. His sister’s HVAC stopped working and Todd being the nice guy he is decided to have a look to see if it can be fixed. Turns out the control board is controlled by a PIC microcontroller, there was also a blown darlington transistor DIP package. After replacing the transistor package it was determined that the PIC was also defective. At this point there is not much you can do other than replace the entire board since the code on the microcontroller is probably read protected, might have been worthwhile having a quick look to see if the code was actually write protected though.

July 8, 2015

Molson Canadian Smart Beer Fridges

at 1:47 pm. Filed under Cool Gadgets, Insane Equipment, What Were They Thinking

Molson Canadian Smart Beer Fridges


Molson Canadian knows how to make an interesting Beer Fridge. While most would simply give the high tech illusion Molson Canadian has actually went to great lengths to allow the tech in the fridge to actually work the magic. In all cases the goal is to unlock the fridge to enjoy some cold beer. The methods to open the fridge has changed from version to version. There is one that looks for an inserted passport and opens the fridge when a Canadian passport has been inserted, one that opens when you sing a correct version of O-Canada and one that opens after 6 people say I am Canadian in 6 different languages. Nice thing is that Molson has made some behind the scenes videos that show us how the tech works behind the scenes. Of course all the tech could be tossed out if they went the simple route by having a remote human in the loop monitoring the interaction but it is nice that they stayed true to the concept in each case.







July 6, 2015

DIY Hot Wire Foam Cutter Machine

at 3:21 pm. Filed under Cool Gadgets

DIY Hot Wire Foam Cutter Machine


If you are into foam cutting this DIY product is sure to give you some inspiration to make your own.  The system takes an image which is processed so that it can be cut with this PVC built system. The tolerances are not very good at 0.5 to 1mm but for foam cutouts that is probably all you need. If you would like to purchase one instead of building one you can see the Ebay auction here



July 4, 2015

Portable Solar Power Supply

at 11:26 pm. Filed under DIY Hacks

Portable Solar Power Supply


This is camping season, a Portable Solar Power Supply would come in handy this time of year. This one is small enough you can lug it around and it is simply to charge with the exterior solar panel. Leaving this out on your picnic table during the day will ensure you can charge all of your gadgets when you need to. Everything that is used are off the shelf parts mounted in a nice compact portable plastic case. Total build price is around $150.


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