hello, i want to use the deumilanove to program the IC atmega328 but then i want only to use the IC without the board. Here is an exemple, imagine you want to blink a led, you program the IC with the board and then you take just the IC and built a circuit with the led and the IC, is this possible? And what about the 16Mhz crystal? Do i need it? How do i do this?
thanks
ps: sorry my english
something like this:
Yes, that is a very common thing to do. There is a lot of information avalible if you search the forum for 'standalone'. Here is an artical on how to set up a standalone on a solderless breadboard:
Lefty
joooao;
Very poor practice to show connecting a LED with a series current limiting resistor. It is sure to damage the output pin and/or led.
Lefty
the ?? goes to each end of a crystal, which also needs to be connected to capacitors which are connected to ground
do you need it? no but then your limited to running at 8mhz, and you will need to change the bootloader to reflect that
and yes led's with out something to limit the current = fried something
Very poor practice to show connecting a LED with a series current limiting resistor.
I thought it was poor practice to connect an LED without a current limiting resistor.
I thought it was poor practice to connect an LED without a current limiting resistor.
Yea, and I've been known to forget a semicolon now and then also. 
Lefty
If you look at the schematics of this project:-
http://www.thebox.myzen.co.uk/Hardware/Pendulum.html
you will see there are two versions, one using an arduino board and the other being stand alone. You can see what you need to add over and above the board from this.
thanks to all of you!
The best one I ever came across: