Hacked Gadgets Forum

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 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 


June 27, 2015

CRT TV Flyback Transformer High Voltage Power Supply

at 1:48 pm. Filed under Cool Gadgets, Electronic Hacks

  CRT TV Flyback Transformer High Voltage Power Supply_2

 

We have seen lots of interesting projects made for little money using scrap electronics like Microwave Ovens, for this project you will need a piece from another throw away item, a CRT TV.  This CRT TV Flyback Transformer High Voltage Power Supply by Robert Gawron is cheap and easy to build since the main part can be found for free in a discarded old TV. It sure makes for a crazy looking jacobs ladder.

“Old CRT monitor or TV is a great source of electronic components that can be used in DYI constructions. One of them is a flyback transformer that can provide 10-30kV output. The input voltage can be in a range from a couple of volts to over a dozen of volts, power consumption is a couple of watts. In my construction input voltage is 9V, power consumption is 5W.”

 

 

CRT TV Flyback Transformer High Voltage Power Supply_3

 

CRT TV Flyback Transformer High Voltage Power Supply


June 18, 2015

UPS Hack

at 2:28 pm. Filed under Electronic Hacks

 

If you have a UPS kicking around you can hack it to be used for all of your low voltage applications. The UPS has a battery and charging circuit in a nice case, by hacking out the inverter you can reduce the load when the power fails. Now of course you won’t have 110VAC available but these days there are so many things that need 12 volts. A handy side mounted battery voltage monitor lets you check to see what your battery voltage is so you don’t drain it too low. Plug in USB converters are used but I would have liked to see some switched ones that were fixed onto the case somewhere for convenience.

June 12, 2015

Portable Pinball Build

at 3:43 pm. Filed under DIY Hacks, Electronic Hacks

 

Ben Heck shows up how he built his Pinball Portable project. The brain of the system is a Teensy microcontroller. He is using shift registers to lower the microcontroller pin count that is needed. This allows for a nice modular design. A output shift register is used to drive mosfets to drive high current devices such as solenoids, input shift registers are used to capture a bunch of inputs bu using just a few pins on the microcontroller. Ben is also using a nice max7221 chip to drive a 7 segment display, this allows for a serial interface to drive multiplexed 7 segments. In the second video Ben puts the electronics to work in a custom built pinball mini model most of which has been laser cut.

 


June 10, 2015

The Batteriser

at 11:33 pm. Filed under Electronic Hacks

batterizer_primary-100588462-large

 

You may have seen The Batteriser in the news recently. Our friend Dave Jones takes a look at their claims and demonstrates why their claims are total junk. In their patent they use lots of generalization that are not true in reality. A good electronic designer will design a battery powered device to operate to a voltage much lower then they are stating. Dave had a ton of battery powered devices around the lab and guess what, none of them dropped out at the claimed typical cut off voltages.

The one thing that I can say that I really like is the very small design of the design, obviously they are slapping their boost convertor onto an existing AA battery so the battery holder must be able to accept the battery with the device attached.

 

June 4, 2015

Atmel 1284p based Smart Medicine Box

at 1:04 pm. Filed under Electronic Hacks

Atmel 1284p based Smart Medicine Box_2

 

Keeping track of your pills and when to take them can be easy to forget. There are all sorts of pill storage systems but this Atmel 1284p based Smart Medicine Box project by Mingyuan Huang and Jie Zhang from the Cornell University ECE 4760 program made a proof of concept that helps with this.

“There are five major components for our device, including a pill box containing seven separate small boxes; a speaker module; a 3×4 keypad; an Atmel 1284p microcontroller; seven segment LED display (7 units); and a 2×16 characters LCD screen. 

The device’s logic structure contains three major stages: 1. User initialization stage. 2. Comparison stage. 3. Reminder stage. In the user initialization stage, the user enters the current time, date and pill information (including amount and serve time for each type of pill). After the user finishing entering all the information, the device will enter the comparison stage unless the initialization button is pressed. During the comparison stage, the system compares the pill information for each of the sub-box with the time counted by RTC. Once the information entered by the user matches the RTC time, the system will jump out of comparison stage and enter the reminder stage. In the reminder stage, the device will continuously play synthesized voice, and the seven segments LED display will show the number of pills needs to be taken on each of the sub-box.”

 

 

Atmel 1284p based Smart Medicine Box 

 

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