Check out this crazy internal baffle structure of this cool Fostex FE206En Back-Loaded Horn Loudspeaker. Â “The back-loaded or rear-loaded horn loudspeaker system is like bass-reflex and double bass-reflex speaker types in that the sound radiated from the back of speaker transducer is utilized to enhance the bass response. The difference however is that back-loaded horn (BLH) speaker enclosures make among the most efficient use of the back wave from
This Etch a Sketch Clock is a great use of an old toy! “I use an Arduino driving two very cheap darlington stepper drivers with 64:1 internally reduced steppers for the drawing. For the rotation I’m using an Easy-Driver driving a Nema 17 stepper. I also have a DS1307RTC real time clock installed so it always knows the time. Setting the time is a one-off via USB connected to
Kevin Mitnick has had a long life of ups and downs. He was hunted and jailed by the FBI for his hacking antics. Up until recently I would have considered him to be a trusted white hat hacker. His Mitnick Security company specialized in Pen testing. Now Kevin will be selling Zero-Day Exploits. This is a sad day. The video below covers much of the Kevin story.\ “Late last
 Check out this Dead Bug Style Bandpass Filter design by PA1ED. If you want great noise isolation a metal box is ideal, check out his FR4 box design! Great idea using FR4 for the PCBs and for the case.  “Because I don`t have a spectrum analyzer,I was not able to test it if the Bandpass filter was doing a good job on the frequency it was designed for.So
 The prize this week is a Mifare RC522 RFID Card Reader. This contest will run for one week (September 28 – October 3, 2014). Ending time is based on central standard time. To enter, identify the item above and what it can be used for. Please note the image above is a side view of the thing. Please do not give the answer in the comments. Send an
If you want to make a memorable Halloween Display have a look at these Singing Halloween Pumpkins by davidandora. A video projector is used to shine images onto the fronts of the pumpkins in such a way that it looks like they have been carved. The effect is very real looking. “The illusion of the singing pumpkins is created by projecting animated features onto uncarved pumpkins. It is particularly
 Murata is always pushing the envelope when it comes to demonstrating their technology in action. You probably remember the close up look we got of the technology behind Murata Girl and Murata Boy. This time they have made an entire group of robotic cheerleaders who dance in formation. They sit on top of a ball and balance as they are moving around. We have seen balancing ball robots
