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Change of PWM frequency possible?
June 23, 2015
11:55 am
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Forum Posts: 1
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June 23, 2015
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Hello at all,

I got an Arduino Uno and LabView 2014. I compiled the Arduino with my code so that Pin 9 outputs a PWM Signal.

Now the Frequency is set by default to 500Hz.

Is it possible to change the frequency of the PWM port (Pin 9) of the Arduino Uno with LabView?

I want to change it too 200Hz.

 Any ideas are welcome.

Thanks in advance.


June 23, 2015
1:34 pm
Forum Posts: 304
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March 12, 2015
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Take a look at the VI Documentation for Analog Write.  Also documented here, the PWM frequency using this method is fixed to 490Hz.  What you can do is use a timer interrupt and toggle a Digital I/O to get 200Hz.  Take a look at the "Interrupt -" example.  Hope that helps.

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