In this chapter we will start unlocking the real power behind the Raspberry Pi—the GPIO, or General Purpose Input Output. The GPIO allows you to connect your Raspberry Pi to the outside world through the use of pins that may be set to input or output, and are controlled through code.
The following topics will be covered in this chapter:
- Python libraries for the Raspberry Pi
- Accessing Raspberry Pi’s GPIO
- Setting up the circuit
- Hello LED