For my second attempt at an Eagle PCB design I am doing my version of a minimal Arduino, a miniscuino I will be accessing the IO pins via the two 14 pin headers running down either side of the 328 and using a two pin screw connector for the 9 volt power connection. The FTDI connection will just be via the VIN and GND pins of the LH header and the reset, TX and RX pins when required. I was not sure about providing a heat sink facility for the LM7805. I am just wondering if anyone can see any problems with my proposed circuit and layout.
Standalone Arduino Copy2.brd (84.3 KB)
Standalone Arduino Copy2.sch (321 KB)