I have setup a hackduino following this instructables http://m.instructables.com/id/Perfboard-Hackduino-Arduino-compatible-circuit/step6
This connects AREF to 5V directly. My understanding now is that this is wrong.
Is this a problem at all if I do not plan on reading or writing to analog pins of my Arduino?
Do I understand it correctly that the default is to connect the AREF via a 100nF capacitor to GND?
I have seen several questions regarding AREF that seem to indicate that, however most of them use analog read or write.