Hi Denno,
Maybe you should look at the Arduino schematic diagram. Here's an example on the ArduinoInfo.Info WIKI, but ALL the Arduino schematics are on Arduino.cc : http://arduino-info.wikispaces.com/file/view/arduino-duemilanove-schematic.jpg
What You Need as a minimum (IF you program the 328 chip on an Arduino board):
- Stable +5V power supply, with close-to-chip bypass capacitors
- Oscillator components: Crystal, Resistor, capacitors
- Reset circuitry for power-on and manual Reset
- Connections to your actual application external circuits based on the 328 pinout
So this part of the schematic:
Let us know how you make out....
