Chapter 19. Raspberry Pi and Arduino
As novel as the Raspberry Pi is, you have to remember that the device is simply another Linux box. In other words, the Raspberry Pi, despite its tiny form factor, contains all of the trappings of a full-sized computer.
As nice as it is to have the input/output (I/O) capability of a full Linux machine, you still must deal with the unfortunate side-effect of system overhead. At times the Raspberry Pi cannot get out of its own way, so to speak, when you need it to perform certain tasks, especially those tasks that require precise timing and calibration.
Single-board microcontrollers like the Arduino are perfect for more direct applications that do not require intensive computing or graphical processing power. ...
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