Hacked Gadgets Forum

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.”

 


Name the Thing Contest – 274

at 3:28 pm. Filed under Contests

guess_this_274

 

The prize this week is a ESP8266 Serial WIFI Wireless Transceiver Module so you can add WIFI to your next project. This contest will run for one week (Mar 22 – Mar 27, 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.

———————————–———-

Added Dec 6, 2015

The item to guess was a Camera Shutter.

The winner is Steve F.  (there were 161 entries)

————————————–———-

Below is a picture of the prize.

 

wifi_arduino

 


March 20, 2015

Raspberry Pi Minecraft Blocks with NFC

at 4:47 pm. Filed under Complex Hacks, Cool Gadgets, DIY Hacks, Game Hacks

 

If you are into minecraft you will soon be able to use some technology to interact with the game using physical objects. Adafruit is making this possible with an NFC reader that they will be releasing soon.

 

“Coming soon to the Adafruit Learning System, a project to make paper Minecraft blocks that interact with the game on a Raspberry Pi using NFC (near field communication)! Swiping a block on the Adafruit PN532 NFC reader causes it to be created in a Minecraft world running on a Raspberry Pi.”

 

March 18, 2015

Eagle Films Flight From World’s Tallest Building

at 1:09 pm. Filed under Crazy Hacks

 

Birds are amazing. We have recently seen quadcopters that are allowing us to take virtual flight but nothing can compare to what birds do naturally. Check out the world record flight of this eagle from the tallest building in the world. The short video is above and the full length one is below. When the eagle sees the handler and starts the dive he sure gets up some impressive speed!

 


March 17, 2015

DIY LED Display using WS2811 LED Strips

at 2:07 am. Filed under DIY Hacks

 

If you are looking to build a large low resolution screen stringing a bunch of WS2811 LED Strips together might be just the thing. ejunky66 shows us how you can make a cool flexible DIY LED Display using WS2811 LED Strips. The strips are stuck onto a plastic sheet, they are linked together in small grids that are then connected to the computer controlled interface. This panel won’t be cheap but can scale up much larger than your big screen TV and looks impressive from a distance. Nice thing is it can be rolled up or curved around surfaces. 

 

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. 

 

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