I have 100uF across the input and a 10uF across the output of the lm2940. (I have also played with a couple different ones i have on hand and none made a difference.
Not really... Its on a breadboard with a diy bb arduino... Picture attached. (remember, when I power it from the 5v from the duemilenove it works perfectly... the only change is the addition of the jumper wires and the lack of the dc plug being inserted.
AREF is not connected on the diy bb arduino (see previous response)
Yep, read every single page on his site... and nearly every post he as made since I joined