F� 3 LED'ere til at blinke ved temperaturm�ling

Sat, 11 Jun 2016 23:13:37 GMT

Hej I kloge hoveder,

Jeg er lige i gang med at skrive en kode, hvor en temperatur sensor skal t�nde for 3 lys:
- �ges temperaturen med 2 grader, t�ndes 1 LED.
- �ges temperaturen med 4 grader, t�ndes 2 LED.
- �ges temperaturen med 6 grader, t�ndes 3 LED.
Dette har jeg gjort!

Men jeg vil gerne tage den et lille skridt videre, og g�re s�ledes, at s� l�nge temperaturen er �ges med mindst 8 grader, s� skal alle 3 LED'ere blive ved med at blinke. Hvordan f�r jeg det ind i koden?

C kode

 //DEFINING CONSTANTS:
 const int sensorPin = A0;                      //ANALOG INPUT 0
 const float baselineTemp = 21.0;
 
 void setup() {
   Serial.begin(9600);                         //OPEN A SERIAL PORT. THIS COMMAND OPENS A CONNECTION BETWEENT THE MCU AND THE COMPUTER.  
                                               //THAT ENABLES US TO SEE THE VALUES FROM THE ANALOG INPUT [0]. COMMUNICATION SPEED OF GENUINO IS SET TO 9600 BITS/S
 
   for(int pinNumber = 2; pinNumber < 5; pinNumber++) {
     pinMode(pinNumber, OUTPUT);
     digitalWrite(pinNumber, LOW);
   }
 }                                 
 
 void loop() {
   int sensorVal = analogRead(sensorPin);      //sensorVal IS A LOCAL VARIABLE THAT STORES THE READING FROM THE SENSOR
   Serial.print("Sensor Value: ");
   Serial.print(sensorVal);
 
   //CONVERT THE ADC READING TO VOLTAGE:
   float voltage = (sensorVal/1024.0)*5.0;
   Serial.print(", Volts: ");
   Serial.print(voltage);
   Serial.print(", degrees C: ");
   
   //CONVERT THE VOLTAGE TO TEMPERATURE:
   float temperature = (voltage-0.5)*100;
   Serial.println(temperature);
 
   if(temperature < baselineTemp+2){ 
     digitalWrite(2, LOW);
     digitalWrite(3, LOW);
     digitalWrite(4, LOW);
   }
       else if(temperature >= baselineTemp+2 && temperature < baselineTemp+4){
         digitalWrite(2, HIGH);
         digitalWrite(3, LOW);
         digitalWrite(4, LOW);
         //IF TEMPERATURE IS INCREASED BY 2 DEGREES RELATIVE TO THE BASELINE TEMPERATURE, 1 LED TURNS ON.
   }
       else if(temperature >= baselineTemp+4 && temperature < baselineTemp+6){
         digitalWrite(2, HIGH);
         digitalWrite(3, HIGH);
         digitalWrite(4, LOW);
         //IF TEMPERATURE IS INCREASED BY 4 DEGREES RELATIVE TO THE BASELINE TEMPERATURE, 2 LED TURNS ON.
   }
       else if(temperature >= baselineTemp+6){
         digitalWrite(2, HIGH);
         digitalWrite(3, HIGH);
         digitalWrite(4, HIGH);
         //IF TEMPERATURE IS INCREASED BY 6 DEGREES RELATIVE TO THE BASELINE TEMPERATURE, 3 LED TURNS ON.
   }
   else if(temperature >= baselineTemp+6 && temperature < baselineTemp+8){
         digitalWrite(2, HIGH);
         digitalWrite(3, HIGH);
         digitalWrite(4, HIGH);
   }
   delay(1000);
   //MEASURE PR. 1 SECOND
   }

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F� 3 LED'ere til at blinke ved temperaturm�ling