1 How to Generate Sine Wave using Arduino??
A tutorial people have followed to produce a sine wave from Arduino PWM and a capacitor, then checked on a scope, sometimes with trouble getting a clean trace.
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A tutorial people have followed to produce a sine wave from Arduino PWM and a capacitor, then checked on a scope, sometimes with trouble getting a clean trace.
Offered as background from an experienced engineer on generating a sine wave with PWM and an LC filter, with one warning the wider project is not for beginners.
Used as a reference tone sweep across the audible range, handy for hearing where your ears or a speaker cut off and for recognising hum frequencies.