Pulse Width Modulator P/N 120539
To control analog devices via a digital signal try pulse width modulation (PWM). It's a very simple method and is very efficient in driving motors, lamps, LEDs and more!
A perfect example of using PWM is if you've ever faded an LED with an Arduino:
Demonstrates the use of the analogWrite() function in fading an LED off and on. AnalogWrite uses pulse width modulation (PWM), turning a digital pin on and off very quickly, to create a fading effect.
For a more robust solution, you may want to consider the DC to Pulse Width Modulator kit suitable for sending up to 6.5A of current and built around the Motorola SG3525 – a chip dedicated to the art of PWM.
Of course, Collin would be denying his own nature if he didn't mention at least one audio-related application. PWM comes in handy for generating simple sounds and melodies from a microcontroller.
Arduino Simple Sounds
Wavetable Melody Generator
Click here for K8004 data sheet
If you decide to build the DC to pulse width modular kit, we'd like to hear about your results!
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