This is the code I am currently using, but I want to add an arithmetic
mean to it. My goal is: when the pin A0 reads 5 values, I get the average
on which the fan and led will depend to be turned on and off, instead of
5 separate measurements.
int tempPin = A0;
int fan = 3;
int led = 8;
int temp;
int tempreal;
int tempMin = 20;
int tempMax = 30;
void setup()
{
Serial.begin(9600);
pinMode(fan, OUTPUT);
pinMode(led, OUTPUT);
pinMode(tempPin, INPUT);
}
void loop()
{
temp = analogRead(tempPin);
tempreal = temp * 0.48828125;
delay(1);
if(tempreal > tempMax)
{
digitalWrite(fan,HIGH);
digitalWrite(led,LOW);
delay(1);
}
else if (tempreal < tempMin)
{
digitalWrite(fan,LOW);
digitalWrite(led,HIGH);
delay(1);
}
else if (tempreal > tempMin && tempreal < tempMax)
{
digitalWrite(fan,LOW);
digitalWrite(led,LOW);
delay(1);
}
}
Edit by Edgar Bonet – The OP added in a comment to my answer:
"I tried [averaging consecutive readings]. It worked as you would expect
but it still does not solves my problem. My sensor is only getting right
values in the beginning of the scanning and then it varies. That is why
I wanted to make average value but it still does not work. Sadly I think
I wont be able to change sensor, but is there any other way to
camouflage this problem?"
Below is a screenshot showing both correct (✓) and incorrect (✗)
readings:
Example readings