/*
sim circuit: partie opérative???
4 LEDs to signal whether below or above range
4 motors to represent the valves for each liquid (water, ph up, ph down, nutrients)
1 ultrasonic sensor to measure water lv in the tank (value will be adjusted manually as well for now)
2 relay modules (for pH and EC) to control the valves/motors

algo:
1. read values (to be entered manually at 1st before receiving them from broker)
2. control valves/pump according to values read:
    adjust EC 1st then pH accordingly
  EC:
      if below range:
        LED3 on
        switch relay2 to activate motor3 (nutrients)
      if above range:
        LED4 on
        read water lv:
          if too low:
            signal that water lv is too low (send alarm or sth)
          else:
            switch relay2 to activate motor4 (water tank)
3. read ph val (after adjusting EC if needed):
      if below range:
        LED1 on
        switch relay1 to activate motor1 (ph up)
      if above range:
        LED2 on
        switch relay1 to activate motor2 (ph down)
  
*/


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}