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Author Topic: Smooth PWM signal  (Read 2342 times)
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Hello, forum! I have been working on a project that lets me debug analog and digital sensors for the NXT robotics system. During the development, I had the need to convert digital to analog signals that could be read by an ADC unit. I found it very difficult to find the information on the subject, and now that I've found it, I thought I might share some informational links for smoothing out PWM signals.

Note, I didn't write these.

Websites:
http://www.datadog.com/pwm_tutorial.pdf
http://www.ehow.com/how_7867398_design-circuit-smooth-pwm-signal.html
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/filcap2.html
http://ww1.microchip.com/downloads/en/AppNotes/00538c.pdf

Here's hoping that others can find the information on this topic more easily than I did.
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Maybe you add it to the Arduino Wiki as a quick tutorial? Write about everything you know, others may come past and edit it to make it better, then its there for us all.
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Here is another one that discusses the requirements of a filter on a PWM output:-

http://www.thebox.myzen.co.uk/Tutorial/PWM.html
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