Hey All,
This is my first post on the Fourms, but I have been playing with the Arudino for about 3 months now.
I am trying to learn PID using this library and have set up a circuit with a photoresistor and an LED. This circuit works per the AnalogReadWrite built in example (changed to output on digital pin 3 however).
I am having trouble making the PID library work at all. I have set up the serial monitor to check the Output from the library, and I do not get a response. Any help would be appreciated!
/********************************************************
* PID Simple Example
* Reading analog input 0 to control analog PWM output 3
********************************************************/
#include <PID_Beta6.h>
//Define Variables we'll be connecting to
double Setpoint, Input, Output;
//Specify the links and initial tuning parameters
PID myPID(&Input, &Output, &Setpoint,2,2,1);
void setup()
{
//initialize the variables we're linked to
Input = analogRead(0);
Setpoint = 250;
Serial.begin(9600);
//turn the PID on
myPID.SetMode(AUTO);
}
void loop()
{
Input = analogRead(0);
myPID.Compute();
analogWrite(3,Output);
Serial.println(Input);
//Serial.println(Output);
}