The blinking led example is incorporated in the gpio.py file and runs when you launch it directly. The LED has to be connected to physical pin 15 on the P9 header with a protection resistor of 330 Ohm in series and then to the GND pin of the BBB.

The Servo needs to be connected to the 5V and the GND pins of the BBB. The library can be used to transform a percentafe input into an angle of the servo.

The accelerometer is connected through I2C (SCL + SDA), once the bus initialized we can read the x, y and z components.