code for line following robot in atmega8

Basically a line following robot is the one which follows a particular line and moves along with that line even if its straight or curved or any thing you can look at the following video for a typical example



Now this is the source code for the line following Robot.
this will work for atmega8

int main(void)
{
DDRB|=0x0F;
PORTB=0x0F6;
while(1)
{PORTB|=0x06;
PORTB&=0x0F9;
}
}

with the above code the bot will move only in the straight path now if you want it to move in different directions just change the code in the while loop

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