Speed and power
The Raspberry Pi is powerful enough to handle some visual processing tasks, with later models being able to perform this faster. The same can be said for the voice recognition tasks too. It is for this reason that the faster 3 and 3B+ models are recommended. The Zero and Zero W are much slower, and although the system will still work, the speed may be frustrating.
The Raspberry Pi is powerful enough to run a complete computer operating system, a version of Linux. We will explore this later, but this allows us to use Python to perform the visual processing and voice processing using libraries and tools that are well maintained by others. Other controllers, such as the Arduino, Esp8266, and Micro:bit simply do not have the capabilities ...
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