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Can the Arduino PID library Output negative numbers?

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Justinli

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Can the Arduino PID library Output negative numbers?
 

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Hi,

I guess you already did read the according documentation....

How are the input and output variables defined? This should give at least a clue

Klaus
 

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The variables are declared as signed, double, however there is a basic example
using a PWM as output, which one would think is unsigned...In example .ino
file I see no casting to unsigned.

Take a look at C code in library....


Regards, Dana.
 

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The sample program in the PID library that I use has no negative numbers.
I heard that it can be done by modifying the library file.
 

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Hi

It says "double", which is floating point. It always is with negative

Klaus
 

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