If you're interested in creating small Arduino-based projects in volume, or are interested in the possibilties with using smaller micrcontrollers then the ATtiny series will be of interest. In a smaller 8-pin package than the usual Arduino's ATmega328P-PU - they're cheaper but have less function. Nevertheless they're quite usable and can be programmed with the Arduino bootloader.
This process has been taken one step further by Instructables member bigboom378 whose ATtiny shield for Arduino makes programming these smaller cousins a snap. The circuitry is quite simple, and can fit on a fraction of a protoshield, for example:
Then after a quick download the Arduino IDE can work with the ATtinys. To learn howm visit the project Instructable page. And for more, we're on facebook, twitter and Google+, so follow us for news and product updates as well.
If you find yourself working with AVR-based projects or uploading firmware to various projects - then you'll need our USBasp - the USB in-circuit programmer for Atmel AVR controllers. Based on the original design by Thomas Fischel, it's fully compatible with the Arduino IDE and all three major operating systems, using the USBasp is a cinch.
You can select 3.3V or 5V target voltages, supply power to your project via the USBasp and even update the firmware on board yourself. Furthermore we've included the ICSP cable and microUSB cable so it's ready to use out of the box.
For more information including our Getting Started guide, design information and to order - please visit the USBasp product page.