hi! If I add any delay or sleep function for a second before the
Ethernet.begin(mac, ip);
does it work for the ethernet shield to take ip address without pressing reset button at the begining ??
should I add the capacitor.. ? I don't wanna do sth wrong to make it unusable..
thanks a lot..
I made a simple solution , in the begining I press the reset button
then I ordered 6x 9V rechargeble battery 
I connect them parallel to adapter.. If the voltage downs ,microcontroller wont be affected by it..
I connect them parallel to adapter..
Do you mean you are connecting batteries in parallel with each other?
If so please stop before you cause a fire.
but If I connect them parallel , the output voltage will remain 9V , why does it cause a fire?
Because the don't stay the same voltage and one battery starts to charge the other, if any battery goes down then large amounts of current are drawn and the whole thing bursts into flames.
If you must connect batteries in parallel you must use diodes or resistors to connect them together.
upps... you're right, I forgot it 
I'll try to find a solution
thanks for your warning my friend
do you know any example circuit?
I'll use a 2A Fuse .. I guess that it'll work