While both devices are referred to as minicomputers, Arduino and Raspberry Pi are quite different. The main difference is their purpose. Arduino works best as a controller for analog systems, e.g. motors in mechanical devices, or for receiving and transmitting data from analog sensors to the display. Meanwhile, Raspberry Pi is a more complex device, better suited for working with digital components. It can be used, for example, as a logic component in a homemade computer or as an IoT gate in a building automation system. Although Arduino has a lower operational capability, it is a simpler device and therefore better suited for creating simple projects based on analog elements, which are not handled at all by Raspberry Pi without additional extensions.
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