Print the 3D-printed cat ghost model.

VCC | 5V
GND | GND
IN | A3

Piezoelectric disc | Grove - Water Atomization module
----------------- | ------------------------
Positive (+) | OUT+
Negative (-) | OUT-

Connect the water reservoir to the Grove - Water Atomization module.

const int PIRPin = 2; const int LED1= 9; // pin para el LED
const int LED2 = 8;   

void setup() {
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
pinMode(A3, OUTPUT);// Set A5 as OUTPUT
}

void loop() {
  digitalWrite(A3, HIGH);   // atomize
  digitalWrite(LED1, HIGH);   // turn the LED on (HIGH is the voltage level)
  digitalWrite(LED2, HIGH);   // turn the LED on (HIGH is the voltage level)       
    delay(10000);              // wait for 10 seconds
//digitalWrite(A3, LOW);    // atomization stopped
//delay(1000);   }

1. Turn on the power switch.
2. The cat ghost will start to smoke.