Build Instructions

Collapse

• 1

  Connect all components to Arduino

• 2

  Upload code

  int WATER_PUMP = 9;
  int IR_SENSOR = 11;
  
  void setup() {
   pinMode(WATER_PUMP, OUTPUT); 
   pinMode(IR_SENSOR, INPUT);
  }
  
  void loop() {
    int cupPresent = digitalRead(IR_SENSOR);
  
    if (cupPresent == 0) {
      digitalWrite(LED_BUILTIN, HIGH); 
  
      digitalWrite(WATER_PUMP, HIGH);   // turn  Water pump ON
      delay(35000);                     // Fill 125ml of water in a glass
      digitalWrite(LED_BUILTIN, LOW);   
    
      digitalWrite(WATER_PUMP, LOW);    // turn the LED off by making the voltage LOW
      delay(60UL * 60UL * 1000UL); // Wait 1 hour
      
    } else {
      delay (1000); // Cup not present, waiting
    }
    
  }

• 3

  Place cup of water

  And get refreshed  :) 

View all 3 instructions