Common uses of a Raspberry Pi in technology projects include learning programming, building learning tools, and creating DIY hardware solutions. It serves as an affordable platform for hobbyists and educators to explore programming languages like Python and Java. Additionally, projects can range from simple tasks like media centers and web servers to more complex systems such as home automation and robotics. The Raspberry Pi's versatility makes it ideal for both beginners and advanced users, fostering innovation and creativity in technology projects.