Connecting the Ground

Start by creating a net to connect the negative battery through hole connection to the top pad of C1 and label the net GND. Follow with connecting pin 3 (the large pad) of the voltage regulator, the top pad of C2, and pins 6, 18, 28, and 39 of the Atmega 16.

Figure 11.1

Create traces for the negative leads in the same manner as you did for the positive lead from the negative through hole connector to the top pad of C2.

Figure 11.2