Reading PWM Signals

Technical Discussions on any InterfaceKits

Reading PWM Signals

Postby tobor » Thu Feb 05, 2009 11:17 am

Can I read a 0-5V PWM (pulse width modulated) signal the same as a static analog measurement? As far as the interface kit is concerned, can a PWM signal be connected directly to an analog input without any modifications neccesary?

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Postby fitchett » Thu Feb 05, 2009 11:21 am

It can be connected to an Analog Input. You would probably get very jumpy readings.


Farfel MacNoogen

Postby Farfel MacNoogen » Wed Feb 18, 2009 7:27 pm

Well, you could run it through a low pass filter of some kind before feeding it into your analogue input to average it out, so you get a much smoother reading. Granted, unless the frequency is quite high, you'll likely end up with a rather slow response time.

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