Chapter 5. Getting Your Hands Dirty Using the GPIO Header

Here, we will start diving into the more physical side of cooking with the Raspberry Pi Zero:

• Pin configurations and precautions for using the GPIO pins
• Using the GPIOs with the WiringPi library
• Connecting an LED with RPZ and controlling it using C, Python, and a shell
• Basics of the UART port and getting data from the desktop on the serial port using Minicom
• Writing a Python/C program to get UART data in your code
• Basics of I2C and checking the I2C devices present on a port
• Basics of SPI and setting up an SPI module
• Converting a 5V signal into a 3.3V signal and slew rates
• Running RPZ on a battery
• Controlling GPIOs using a web interface
• Making RPZ a radio transmitter and sharing music
• Using a Node.js library to control the GPIOs
• Interfacing the ESP8266 WiFi module with RPZ