====== Τι είναι το Arduino Starter Kit R4 ; ======

Το  Arduino Starter Kit R4 είναι ένα πακέτο εκμάθησης βασικών γνώσεων προγραμματισμού μικροελεγκτών.
Περιλαμβάνει την πλακέτα [[https://docs.arduino.cc/hardware/uno-r4-wifi/|Arduino UNO R4 WiFi]]
καθώς και πλήθος βασικών ηλεκτρικών στοιχείων για δημιουργία απλών κυκλωμάτων .

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====== Άσκηση 1 ======
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Η ταυτοποίηση των αντιστάσεων δεν ήταν ευκολη.

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====== Άσκηση 2 ======


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<code>
int switchState = 0 ;


void setup() {
  // put your setup code here, to run once:
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
pinMode(2,INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
switchState = digitalRead(2);

if (switchState == LOW) {
digitalWrite(3,HIGH); // green LED 
digitalWrite(4,LOW); // red LED 
digitalWrite(5,LOW); // red LED 
}
else { 
digitalWrite(3,LOW); // green LED 
digitalWrite(4,LOW); // red LED 
digitalWrite(5,HIGH); // red LED 

delay(250);
digitalWrite(4,HIGH); // red LED 
digitalWrite(5,LOW); // red LED
delay(250);
}


}

</code>

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====== Άσκηση 3 (αισθητήρας θερμότητας) ======

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<code>

const int sensorPin = A0;
const float baselineTemp = 27.0;

void setup() {
Serial.begin(9600); // open a serial port
for (int pinNumber = 2; pinNumber<5; pinNumber++) {
  pinMode(pinNumber, OUTPUT);
  digitalWrite(pinNumber, LOW);
}
}

void loop() {
int sensorVal = analogRead(sensorPin);
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 in degrees
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);

}else if(temperature >= baselineTemp+4 && temperature < baselineTemp+6) {
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, LOW);

}else if(temperature >= baselineTemp+6) {
  digitalWrite(2, HIGH);
  digitalWrite(3, HIGH);
  digitalWrite(4, HIGH);
}

delay(1);
}

</code>