Hacked Gadgets Forum

December 4, 2013

Ultrasonic Range Finder with Haptic Feedback called The Bat Hat

at 1:22 pm. Filed under Complex Hacks, DIY Hacks, Educational, Electronic Hacks

bat_hat_2

 

Jeff Buswell, Clifford Chou and Andrew Knauss from Cornell university made a cool Ultrasonic Range Finder with Haptic Feedback called The Bat Hat for their ECE 4760: Final Project

“For our ECE 4760 final project, we designed and implemented an ultrasonic range-finding hat that uses haptic feedback to alert its wearer about obstacles in his or her path. The hat is equipped with an ultrasonic transmitter/receiver circuit, which is capable of emitting short pulses of ultrasonic-frequency (approximately 40 kHz) sound, at a level of about 120 dB. These pulses then echo off the closest object in the line of sight of the hat and are picked up by the receiver. The time delay between sending the initial pulse and receiving the echo gives a sense of how far away the obstacle is from the ultrasonic sensor, which can be conveyed to the person by vibrating the hat at a level proportional to that distance.”

 

bat_hat


November 7, 2013

Teardown of a modern LED Light Bulb

at 4:59 am. Filed under Educational

 

If you haven’t ripped apart an LED bulb to see what makes it tick have a look at the video that electronupdate made showing what is inside a Philips A19 bulb which is a 60 watt incandescent replacement. It really shows you the world of difference between incandescent and LED! Watch the video below to see how simple the old style bulb is to make.

 


November 3, 2013

Energy Storage and Density

at 9:19 am. Filed under Educational

 

Mjlorton gives us a lesson on Energy Storage and Density. This will be of interest to anyone who makes projects that run from batteries.


November 2, 2013

Peltier Module Cooling

at 11:33 am. Filed under Educational, Electronic Hacks

 

If you have a project that needs some cooling you might want to look into using a Peltier Module. RimstarOrg found one in an old water cooler, with a bit of disassemble he found a system that consisted of a 12 volt transformer which feeds a small board which coverts it to 12 volts DC that the module needs and finally there is a small circuit which measures that actual water temperature to switch off cooling power when the water is cold enough. By disabling the temperature sensor he was easily able to freeze some water on the module in no time. You can see the full details of the experiment here.

October 9, 2013

Reverse Engineering a RGB LED Bulb

at 2:50 am. Filed under Educational, Electronic Hacks

Reverse Engineering a RGB LED Bulb

 

If you have ever wondered how one of those RGB LED light bulbs work have a look at the article that has put together. By monitoring the IR LED of the remote he was able to snif the IR remote codes for the functions. Once he knew the IR codes he used an Arduino to run through all of the byte sequences but unfortunately there were no easter eggs IR codes in the bulb. Since one side of this bulb has line voltage you must be very cautious when hacking it. Chr demonstrates how he works around this danger.

 

Reverse Engineering a RGB LED Bulb_2


September 30, 2013

2013 Huntsville Hamfest

at 1:43 am. Filed under Educational

 

The guys from Amateur Logic head down to Huntsville Hamfest. Looks like an interesting show, quite the line up when the doors opened.

 

September 28, 2013

Fairchild 1967 Briefing on Integrated Circuits

at 6:17 pm. Filed under Educational

 

Funny how they look at the circuitry from the 60s and call it old fashioned. Interesting how we work with these little pieces of magic every day without having to know the complexity that goes into creating them. Other than automation I don’t think much has changed over the years. I wonder if someone sent them a letter at the address shown at 19:08 if they would get anything in return?

Via: Electronics Lab

“Fairchild Semiconductor Corporation was one of the most influential early high-tech companies. Founded in Palo Alto California in 1957 by eight scientists and engineers from Shockley Semiconductor Laboratory, Fairchild Semiconductor Corporation was funded by Fairchild Camera and Instrument Corporation of Syossett, New York. Rapidly establishing itself as a technology innovator based on its invention of the planar manufacturing process in 1959, the company developed the first monolithic integrated circuit, the first CMOS device, and numerous other technical and business innovations. French oil field services company Schlumberger Limited purchased Fairchild in 1979 and sold a much weakened business to National Semiconductor in 1987. In 1997 National divested a group, formed as the present Fairchild Semiconductor, in a leveraged buy-out. The company re-emerged as a public entity based in South Portland, Maine in 1999 under the corporate name Fairchild Semiconductor International, Inc.”

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