After I've done all the programming and testing with arduino board. What should I do to take off the microchip and use it in my project, on my board? Should I just follow the data sheet then? :-?
You will ned a few components, the 16MHz crystal for the clock and a couple of capacitors and the resetswitch.
And of course a well regulated power supply.
Heres a how to from the playground : http://www.arduino.cc/en/Main/Standalone
It's for the Atmega 8 but i believe that it's valid for the 168 as well
This link: http://www.instructables.com/id/uDuino-Very-Low-Cost-Arduino-Compatible-Developme/
might be interesting if you want to be able to reprogram the processor outside the Arduino board.
MikMo
Here's another example, fewer components and two 168's sharing the same resonator - the circuit works fine with one IC.
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1205243372/0#0
You'd need to add a 5v regulator if you don't have a mini USB.
Here's another link you might find useful.
Thanks, that's what I was looking for! 