Hacked Gadgets Forum

March 26, 2015

GSM Power Monitor and Control

at 8:10 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks

GSM Power Monitor and Control

 

If you would like to keep better track of your energy usage this GSM Power Monitor and Control by Idris Zainal Abidin might be just what you need. There isn’t much details so you would not be able to build it from the article but it should be enough for some inspiration to build your own creation.  The modular build looks great even though it would not be best suited for a compact instillation.  

 


March 25, 2015

Cliff Test – Constant Current Variable Load

at 10:18 pm. Filed under DIY Hacks, Electronic Hacks

Cliff Test - Constant Current Variable Load 

 

Check out the Cliff Test, it is a Constant Current Variable Load by TimNJ. It is based on the popular inexpensive load tester circuit that Dave Jones built a while ago. 

“Here’s some information about it:

-External AC/DC power suppply
-Fan cooled (no temperature control at the moment)
-Load switch (with LED indicator)
-10-turn pot
-Internal trimmer to set max current (currently set at 1A, but can most likely do 2-3A)
-Yellow and black banana jacks for current measurement (1A/1V)
-10x 10ohm Vishay CPF3 (3W) resistors”

 

Cliff Test - Constant Current Variable Load_2


March 23, 2015

Laser Oscilloscope using two Speakers

at 7:34 am. Filed under Cool Gadgets, Electronic Hacks

Laser Oscilloscope using two Speakers

 

Kerry Wong has built a great Laser Oscilloscope using two Speakers. Of course this is not something that can be used to measure any real voltages or waveforms with any accuracy, for that you can use any used $50 scope. What this one does is produce a great visual display. You would be able to record separate right and left audio tracks to produce any light show you like.

Via: Dangerous Prototypes

“A rod (must be made of none magnetic material) was glued onto the cone of the speaker using epoxy at an angle. So when the speaker vocal coil is energized, the vertical movement of the speaker cone translates into the vertical movement of the rod. The other end of the rod was glued onto one axis (one edge of the mirror). Another set of identical actuator mechanism was used to control the other axis. A long screw was used as the support point of the mirror. The length of the screw was chosen so that the mirror sits on the screw tip and can rotate about freely. The picture on the right above shows this configuration.”

 


March 22, 2015

DIY Oscilloscope using Arduino Uno and Mega

at 4:09 pm. Filed under Cool Gadgets, Electronic Hacks

DIY Oscilloscope using Arduino Uno and Mega

 

If you are interested in making a very basic scope to monitor some simple things before you spend the money on a real scope have a look at the work that vaupell posted in the Element 14 community. He tried a number of internet scope projects until he found this one that worked like a charm.

“After trying many different versions of code and tutorials, I was unable to get a single one to work, and all the tutorials and guides around was 2-3 years old. Not sure if it is the IDE or the actual hardware that has changed in such a way that it didn’t work anymore. I finally found a working oscilloscope from a Japanese website, (linked below) and a working TFT screen library, meaning i could read the various signals received. Clearly the limitations are 0-5v but that is fine, what i needed to know is either wave type and frequency, and this is sufficient. It also gives me an indication of the amplitude which is just a nice bonus.”

 

March 14, 2015

Custom DIY RFID Smart Lock

at 7:42 pm. Filed under Cool Gadgets, Electronic Hacks

 

RFID technology has rapidly been getting cheaper and simpler for the DIY enthusiast to get into over the years. The video above uses a Raspberry Pi and doesn’t have build instructions but that doesn’t matter much. Any microcontroller can easily connect to the heart of the access system which is the actual RFID reader. An Arduino could be used instead, it could be made stand alone instead of network connected for a simple setup. Julian Ilett picked up one of these inexpensive RFID readers, it looks very impressive for the price. 

 


March 7, 2015

Fly Swatter Compact Fluorescent Light Hack

at 2:25 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks

Fly Swatter Compact Fluorescent Light Hack

 

If you have one of those electronic fly swatters kicking around you might want to hack it into a cool looking light. Steven from RimStar has just completed his Fly Swatter Compact Fluorescent Light Hack. The fly swatter is powered from 3 volts (2 AA batteries). The circuit produces a high voltage that electrifies a grid which the fly will short out through his body. The grid is removed and the circuit is modified slightly to optimize it for use with a CFL bulb.

 

 

Fly Swatter Compact Fluorescent Light Hack_2

March 6, 2015

Auto Tracking Camera Build

at 5:01 am. Filed under DIY Hacks, Electronic Hacks

 

Ben Heck shows us how you can be a one man video recording machine. Don’t you hate it when you need to reposition the camera for multiple shots. Using a PIXY he was able to make a system that will look for a certain color and then reposition the camera for the perfect shot. Ben makes good use out of his 3D printer to make many of the parts for the system. I have never heard of the acetone method that Ben uses to make the 3D parts stronger, it allows the printed layers to bond beter.

 

 

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