Electric brew kettle controller

Projects General Guidance
4

After a couple of hours googling and trying and failing it seems like I did something right :slight_smile: I havent tried it with a SSR, only a LED but it works like I want. I have set the Period to 2,5 sec and adjust the duty cycle with a potmeter. The code is probably awful so I hope someone can comment and give me some tips.... :slight_smile:

The values I get from analogread is pretty unstable so to get full output when the pot is turned to max I included a if statement.

#include "TimerOne.h"

int sensorPin   = 0;
int sensorValue =  0;
//int Cycle =  0;
int Val = 0;
int SSRval = 0;

 
void setup()
{
  pinMode(10, OUTPUT);
  Timer1.initialize(2500000);         // initialize timer1, and set a 2,5 second period
  Timer1.pwm(9, 0);                   // setup pwm on pin 9, duty cycle = 0
  Timer1.attachInterrupt(callback);  // attaches callback() as a timer overflow interrupt
  Serial.begin(9600);
}
 
void callback()
{
  digitalWrite(10, digitalRead(10) ^ 1);
  
}
 
void loop()
{
  Val = analogRead(sensorPin);
    if (Val >= 1010) {
      SSRval = 1024;
    }
        
    else {
      SSRval = Val;
    }
    
                                        
     Timer1.setPwmDuty(9, SSRval);
     Serial.println(SSRval);                                        
  delay(1000);
  
}