Home Blog  





12 Jan 2008

fkhwm5qf04fmxdxmedium.jpg

There are lots of people mentioned about using Inkjet Glossy Paper to do Toner Transfer. It can be done. But it is not easy to remove it after ironing. You have soak the PCB in hot water for more than ten minutes. It is quite time consuming. If you cannot remove the coating completely. It cannot be etched.

Cheap and Easy Toner Transfer for PCB Making - [Link]

12 Jan 2008

 ph12.jpg

Kawasaki’s Cube-Kun isn’t the first robot to be able to solve a Rubik’s Cube quickly, but he’s the only one who can do it in the blink of an eye. The robot was created with absolutely one goal. To master the cube quickly. And it succeeds admirably. He has a flat-panel display for a head and uses built-in sensors to determine the current position of each square on the cube. This tells him how to solve it as quick as possible. So basically, he does the same thing that nerds in the 80′s did. He’s just faster. And much much cooler. [via]

Robot Solves Rubik’s Cube In Seconds - [Link]

12 Jan 2008

 1199810948.jpg

This 9 min. overview video demonstrating Surface Mount Soldering with inexpensive equipment. Includes soldering of a 603 resistor, PLCC, 44 pin QFP, 208 pin fine-pitch QFP, desoldering using hot air and ChipQuik®, and prototyping with SchmartBoards®

Surface Mount Soldering - [Link]

12 Jan 2008

die690.jpg

If you like gambling, you should have this toy in your collection. Electronic dice (die) is very easy to build – it uses several component and quite few code lines. Here you can find several Electronic die projects designed for different PIC microcontrollers by Pete Griffiths. These can be built on prototyping breadboard or as single application. Projects are ready for PIC16F84, PIC12F675, PIC16F690 and even on hard TTL logic. [via]

Electronic dice projects on PIC microcontrollers - [Link]


11 Jan 2008

 reversedled.jpg

David writes -

One of the first lessons that an electronics student learns is that an LED provides light from current flow. But, did you know that an LED put in backwards provides current flow from light? Yes! It’s true. [via]

Make a color sensor from a reversed LED and Op amp - [Link]

11 Jan 2008

tilt2yu9.jpg

Here’s a great DIY tilt sensing mouse made with an Arduino. [via]

DIY Tilt sensing mouse - [Link]

11 Jan 2008

 zap2.jpg

Mondo made an “electric roach motel” -

Using a PIC for this device provides a lot of useful functionality. The timing for the power pulse to the inductor is critical to getting the best Zap from your nine volt battery. The longer the current is on, the higher the voltage. Once the inductor reaches saturation, however, you are just wasting power. Some versions of this circuit charged up a capacitor (C1) with multiple pulses. This allowed the PIC to monitor the high voltage and produce a regulated output. Here is the current Source File. The version shown here just generates 400 volt pulses at a rate of 10 per second.

Make a PIC based cockroach shocker – [Link]

10 Jan 2008

avr_jitter.png

 scienceprog.com writes:

If you go to AVR site and open an AVR application note AVR053 you will notice that there are different RC oscillators installed in to AVR chips during history. Simply speaking each new version of oscillator introduces better features and improvements. But is it really truth? ChaN has made interesting research on these oscillator version. He simply tested output signal with fixed width and measured timing fluctuations of it. And he found out, that RC generator frequency slowly fluctuates during time.

AVR internal oscillator jitter research - [Link]

10 Jan 2008

 p1090004.jpg

Dimme writes in -

WebVisitors blinker is a quick ‘n’ dirty Arduino project. Something very easy to do to get started with Arduino. If you have a web server where you live you can see when somebody visits your web site in real time. It gives you a warm feeling of knowing that somebody visits your web site. [via]

Arduino WebVisitors blinker - [Link]

10 Jan 2008

usb_3_5.jpg

USB 3.0 is expexted to be released at 2010, but jacks and sockets of this upcoming version of USB connection already revealed! The new USB 3.0 standard is set to deliver data transfer speeds of around 4.7Gb/s – ten times today’s 480Mb/s limit. As you can see on the above diagramm there are major pin addons to this new jack. Five new pins are added behind the old ones to support USB 3 connectivity and all four pins of older USB versions are preserve. So, The new spec will be compatible with older USB 1.1 and 2.0 products, cables and connectors.

Revealed: USB 3.0 jacks and sockets - [Link]



 
 
 

 

 

 

Search Site | Advertising | Contact Us
Elektrotekno.com | Free Schematics Search Engine | Electronic Kits