Difference between Arduino and Raspberry Pi Raspberry Pi Includes a processor (CPU) , RAM , HDMI output, USB ports, and networking (Wi-Fi, Ethernet), making it more powerful. Requires more power, usually via a 5V, 2.5–3A power supply. Best for complex projects needing computing power—like IoT gateways, media centers, web servers, robotics with vision, etc. Has built-in Wi-Fi , Bluetooth , USB ports, HDMI, and GPIO pins for interacting with hardware. Arduino Simple microcontroller (like ATmega328 ), limited RAM and storage, and lacks the ability to run complex software. Low power consumption can run on batteries (e.g., 9V) for long periods. Best for simple electronics projects —such as controlling LEDs, motors, sensors, and real-time systems where quick pin control is necessary. Focuses on GPIO pins, with additional components (shields) needed for network connectivity (Wi-Fi, Ethernet, etc.). OMega TechEd