Hacked Gadgets Forum

May 30, 2015

Name the Thing Contest – 282

at 12:31 pm. Filed under Contests

guess_this_282

 

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 (May 30 – June 5, 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 Z Axis Coupler.

The winner is Kevin N.  (there were 217 entries)

————————————–———-

Below is a picture of the prize.

 

electronic_compass_2

 


Motorcycle Gear Indicator Project

at 11:54 am. Filed under DIY Hacks, Electronic Hacks

 Motorcycle Gear Indicator Project

 

Vassilis Papanikolaou built this Motorcycle Gear Indicator Project that uses hall effect sensors to detect the movement of the shift pedal. The end project was put into a nice looking case and mounted in a way that it looks stock. The sensor was encapsulated in epoxy to keep the weather out. Most new vehicles have this type of indicator built in but if not this is a nice way of enhancing your ride.

The main circuit is based on an AVR ATTINY25/45/85 microcontroller, which reads the signals of the two Hall sensors and the neutral switch and outputs the current gear number to a 7‑segment LED indicator, through a 4026 counter/decoder.

 

 Motorcycle Gear Indicator Project_2


May 28, 2015

Virtual Mouse

at 7:43 pm. Filed under Complex Hacks

 

This Virtual Mouse project by r5rejeet shows us how OpenCV can be used to interface the camera image and process it into a HMI device. You can move the mouse pointer around the screen by moving your open hand around, you can click by simply closing your hand. This allow for a surprisingly good looking gesture interface. 


May 27, 2015

Google’s Project Wing Delivery Drone Prototype

at 11:29 am. Filed under Complex Hacks, Cool Gadgets, Insane Equipment

 

Can’t wait till this style of delivery method is available. Tested had a first hand look at the Google Project Wing Delivery Drone Prototype. Not that it will have a direct replacement for things such as pizza delivery since the payload needs to currently be quite small but the flight and delivery method is great. Scaling these up to handle larger packages would make it great for package delivery directly into your secure back yard in minutes. I guess the only concern people will have is what happens when something goes wrong and it falls from the sky and knocks someone in the head.

 

 

May 26, 2015

Nokia Phone Arduino Shield

at 11:29 am. Filed under Cool Gadgets

Nokia Phone Arduino Shield

 

If you have one of these classic Nokia phones in your desk you might want to put it to use.

Via: EEVBlog Forum

“I am making an Arduino shield to interface with old Nokia phones. I’d like to keep the price around $20 for the shield, cables, and phone. If I can get some software help from the community, this will be great for interfacing projects with the internet.

For photos, code, and a detailed writeup please check out my post at http://paxinstruments.com/nokia-phone-arduino-shield/

  • Should the shield be for a specific Arduino board or be configurable? The AltSoftwareSerial library uses specific pins for different Arduino boards.
  • Is it fine to have the phone and serial-to-USB chip both connected to the Arduino RX/TX lines?
  • Do we need the level shifters?
  • Is there a better Nokia cable that also provides power?
  • The Nokia 3100 needs a battery to run even with the power cable inserted. Is there a way around this?
  • Is there a better target phone?


May 25, 2015

Meter Clock using a DS1307 RTC and Trinket Microcontroller

at 3:33 pm. Filed under Cool Gadgets

Meter Clock using a DS1307 RTC and Trinket Microcontroller_2

 

This Meter Clock uses a DS1307 RTC and Trinket Microcontroller to show the current time in style. The meters are PWMed into position directly from a few pins of the Trinket. The meters are ammeters that have had their scale replaced by Hour and Minute scales. You can see the scale adjustment calculated below, another alternative would be to do it in code as I did with the Multimeter Clock

“For a 5 volt Trinket and 50 microamp meters, for full scale deflection we need a series resistor on each meter to keep the current less than or equal to the maximum current the meter can handle. Using Ohm’s law, R = V / I = 5 / .00005 = 100,000 ohms (100 K). You will need two of these resistors, preferably 5% or better tolerance. These are commonly available from electronics suppliers. If you want precision in calibrating the meter, you may want to substitute each resistor with a 100K potentiometer with a series resistor, perhaps 10 to 47 K. This allows for tuning the resistance. When I designed the project, the 100K resistors gave accurate enough time without needing potentiometers.”

 

Meter Clock using a <a href=

May 24, 2015

Gesture Control iphone Dock

at 11:11 pm. Filed under Complex Hacks

 Gesture Control iphone Dock

 

Zhiyuan Teo and Mohit Yogesh Modi made this iPhone Gesture Control for their ECE 5760 Final Project. Their system uses a camera to look for certain gestures to control the docked iPhone.  The current version uses a green square as the item that is being tracked and there are 4 video regions that are being watched. With a bit more work a hand could be tracked instead of the marker cap.

“A video camera captures gestures that are then translated into commands to be issued to the iPod/iPhone (which for simplicity we will subsequently refer to generically as ‘iPhone’). For our project, we used the Altera DE2 FPGA board to process the video and communicate with the iPhone. There are three principal components in our design: an iPhone controller module, a VGA controller and a camera input system. The iPhone controller is responsible for the I/O with the iPhone via a TTL serial interface. The VGA controller outputs a video containing a composite of the input camera image, iPhone metadata and gesture tracking information. “

 

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