Instead of using keys and codes for security this device that Ankur Thakkar, Darshan Shah and Saisrinivasan Mohankumar built as part of their ece4760 Final Project uses gestures to grant access. The system uses IR sensors to determine the movement of a persons hand within the detection area, after you train the unlock pattern you can simply repeat the pattern to activate the device. I think a small miniature
We featured the MakiBox here before, taking about their inexpensive 3D printer (still the cheapest as far as I know). They have two models, one that goes for $200 and one that goes for $300. So what happens to your company when you offer a hot product at this kind of price? You get lots of orders and need to ramp up very quickly. They have a number of
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
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.
Mjlorton gives us a lesson on Energy Storage and Density. This will be of interest to anyone who makes projects that run from batteries.
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
If you have ever wondered how one of those RGB LED light bulbs work have a look at the article that chr 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
