Archive for January, 2008

Connection sockets and headers used in embedded projects

Tuesday, January 22nd, 2008

Probably everybody gets confused each time when considering what connectors to use in electronic projects. There are so many connector types and technologies that can be chosen. So what connectors is the best choice, or there is no single answer? Before answer these questions lets go through several points. First of all why do we [...]

Contact lenses with circuits for superhuman vision

Monday, January 21st, 2008

Can you imagine having screen directly on your eye like movie characters from the Terminator or Bionic Woman? Maybe not for having virtual crosshairs or zoom in on far-off scenes, but for more practical use like having virtual displays for visual aids to help vision-impaired people, holographic driving control panels and even as a way [...]

Batteries and cell characteristics

Thursday, January 17th, 2008

Batteries are cheap, small and relatively safe way of having portable energy source. There are many types of batteries with different characteristics and uses. Probably many of you heard terms battery and cell referring to the same. But from technical perspective these are different things - cell is a single unit which houses a single [...]

Surface Mount Soldering with inexpensive equipment

Tuesday, January 15th, 2008

This is really great video about SMD soldering using simple and cheap equipment that most electronics hobbyist can find at home. This 9 min video tutorial prepared by CuriousInventor includes up-close shots of fine pitch soldering such SMD elements as 603 resistor, PLCC< 44 pin QFP, 208 pin fine-pitch QFP. Also there are few SMD [...]

AVR internal oscillator jitter research

Friday, January 4th, 2008

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. In table you can see tunable oscillator versions and their features.

Simply speaking each new version of oscillator introduces better features and improvements. But is it really [...]

Glowing LED tubes and signs for parties

Thursday, January 3rd, 2008

Have you missed a New Year party? Dont worry you can make it UP with these fun projects made of LEDs andother cheap materials. Joe Utson has compiled several LED and fiber optic projects the average Joe can create easily and get ready for the party. One of them is simple LED sign made of [...]