Ok Placement Done..
- Trying to Keep it as simple as I can.
- Paid attention to GPIO for easy access and interface for external peripherals.
- Form Factor as small as possible. Most of them are SMD.
- I guess need to update footprint for DC Barrel Jack, the one I have doesn't matches.
- Also I have noticed that Atmega328P-PU footprint from Atmel EAGLE Library, does not match with the device itself. It's quit ironic. Updated that too with couple of Trial & Error.