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Ground from PORTD to ground from Adaptor and Servo.
ground from PORTD ?what do u mean?
Wall socket -->Vanson 6V Powerwire---------------------------> Servo power inputWall socket --> Vanson groundwire-----------------------------> Servo ground and micro groundWall socket --> Another adaptor (power&ground)----------> STK500 board, mcu (5V logic) -----------> Servo logic
it works fine when I use a batterypack instead of the adaptor.
As for using a 7805 for powering the micro, I really don't see the reason to do that when the micro is mounted in a socket on a 100 dollar well developed Atmel (AVR) board built for the sole purpose of making things like powering, output/input, serial communication etc easier. I put my trust in the Atmel electronic engineers here...