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Voltage of PWM


#1

Is the range of the PWM between 0 and 5 V?


#2

Nope, 0 to 3.3V, IIRC.


#3

IIRC ??


#4

IIRC == If I remember correctly.


#5

Everything is 3.3V on FEZ


#6

Quite what do you mean by “range”?

Sorry to be pedantic but:
the PWM sends a stream of 3.3v pulses.
The ratio of time spent at 3.3v compared to 0v is what varies (aka Mark:space ratio).
The PWM isn’t a continuum of voltage, unless you average over a longer time span.

If you want an analogue voltage that (almost) continuously varies then doesn’t the Domino have an DAC?


#7

Yes there is a DAC on domino


#8

@ SatSci, I think he wants to know what the voltages of the low and high voltages, which are 0V and 3.3V.


#9

This may sound silly but I am working through the “Beginners guide to C# and .NET Micro Framework”, page 61 “Analog input & output” addresses this topic.

HTH.