AVR enthusiast Kio has described a stylish and useful digital egg timer based around an ATtiny2313. What makes this different is the use of the low-power mode of the AVR as the speed is down to 1MHz. Furthermore the use of a rotary encoder for user input is nicer than a group of simple buttons. For example:
Finally Kio has not only published the project code, there is also full schematics, PCB design files and detailed notes - enough to get you virrtually manufacturing your own versions. And for more news, updates and items of interest.please follow us on twitter, Facebook and Google+.
To get started with your own egg timer or other related project, we have a range of electronics components from various distributors including Sparkfun, Seeedstudio and Electus - and can get them to you in a flash. One component of interest is the illuminated rotary encoder - which contains an RGB LED in the shaft. This allows all sorts of user feedback or mode display as well as data entry all in the once device - very clever.
Electronics enthusiast Peter Lavelle was tired of switching manually between headphones and speakers when using his PC, and solved this conundrum using what could possibly be described as overkill or an excellent educational project. He has created a switchover circuit using a relay to direct the audio to the appropriate output, and then used an Ethernet-enabled Arduino to control the relay. Finally the Arduino is running the Webduino libary which allows control over the web. So instead of fiddling around with cables, the user can now switch outputs from the comfort of any web browser.
Although it may seem trivial, this project is an excellent explanation of how to control various Arduino-connected items over the Internet. To learn more and undestand how it works, visit the project page here. And for more news, updates and items of interest.please follow us on twitter, Facebook and Google+.
When working on your own Internet-connected Arduino projects, consider the Freetronics EtherTen. Not only is it an Arduino-Uno compatible board, there is a microSD card socket, full Ethernet support and optional Power-over-Ethernet:
Over at the Ten Points Random blog, the team have rebuilt and created an amazing foot controller for use with a desktop computer. It is the equivalent of 22 buttons and six-axis joystick - and can be configured as a keyboard or joystick. As it is powered by an Arduino board, the level of control and customisation is almost infinite.
This would be ideal from the obvious sporting and racing games right through to a custom method of text entry for differentl-abled individuals. To get started, check out the detailed project page here. To get started with your own foot controller, we have a range of Arduino boards, buttons and associated electronics. And for more news, updates and items of interest.please follow us on twitter, Facebook and Google+.
If working with electronics and various sensors is a new topic, you may find the book "Electronic Sensor Circuits and Projects" by Forrest Mims III of use. In this book you'll learn about important sensors like solar cells, photoresistors, thermistors, hall-effect devices, and magnet switches. Then use these sensors to build circuits and projects that respond to heat, pressure, light, touch, water, strain, lightning and magnets. You can even make a circuit that detects the presence of the cursor on your computer screen and the position of a compass needle.