Electrical

In this circuit I show the pull-up resistors that I used to have a digital output from the keypad. When a button is pressed, one of the GPIO Port D values should go high.

This circuit has the GPIO output pins wired directly to the LEDs. This is because the LEDs required more current than the Tiva board could supply when testing different sized resistors in series with the LEDs.

This switch is connected to Pin 3 of Port B on the Ti Tiva board. When the switch is on, it outputs a signal of 3.3 volts, which the circuit is designed to respond to as a high signal. 

This switch has three pins. To achieve positive logic, the switch is considered low when it's not pressed. The Tiva Board will use PA6 as its input.

The servo is powered with the Ti Tivas 3.3 Volt pin. The PWM wave is supplied by Port F pin 1.