Enthisiasts of the world of scale modelling will go to great lengths to ensure the accuracy of their models, both in look and operation. However for remote-controlled vehicles the missing element can often be the actual sound of the real thing. This was Nick Ward's problem and by creating an Arduino-powered solution his model vehicles now have an extra dimension of realism.
By using a simple PCM audio sample, the Arduino can play back the sound with a speed based on a signal received from the RC electronics, and further examples are demonstrated that are more interactive and realistic. These are explained in some detail through the following interesting video:
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