Published July 7, 2020

Arduino Centipede Dropping Prank

Scare infiltrators of your room!

BeginnerFull instructions provided2,104

Things used in this project

Hardware components

SG90 Micro-servo motor

Arduino Nano Every

Ultrasonic Sensor - HC-SR04 (Generic)

Hand tools and fabrication machines

glue

Soldering iron (generic)

Story

Protect your room with a centipede dropper! Anyone who enters will have a centipede dropped on them!

It's a very simple machine, but can give a good scare. A cup holds the centipede, a servo motor flips the cup to drop the centipede, and a distance sensor senses if the door is opened. If the distance is less than a certain amount, the arduino turns the cup 180 degrees. After a second, it returns to its previous position, with the cup facing upwards. The machine will be dormant for five seconds, making sure the cup doesn't keep dropping centipedes. I glued the distance sensor to the bottom of the cup so it takes minimal space.

To use it, just flip the switch to turn the device on. Place the toy centipede in the cup. Then, wait for invaders.

Code

Centipede Dropper

#include <Servo.h>
int trigPin = 5;    // Trigger
int echoPin = 3;    // Echo
Servo myservo;
long duration;
 
void setup() {
  //Serial Port begin
  Serial.begin (9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  myservo.attach(20);
  myservo.write(180);
}
 
void loop() {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(5);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
 
  duration = pulseIn(echoPin, HIGH);
  Serial.println(duration);

  if ((duration <= 2000) and (duration != 0)){
    myservo.write(0);
    delay(1000);
    myservo.write(180);
    delay(5000);
  }
  

  

}

Credits

GadhaGod

17 projects • 21 followers

Arduino Centipede Dropping Prank

Things used in this project

Hardware components

Hand tools and fabrication machines

Story

Schematics

Centipede Dropper

Code

Centipede Dropper

Credits

GadhaGod

Comments

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Arduino Centipede Dropping Prank

Arduino Centipede Dropping Prank

Things used in this project

Hardware components

Hand tools and fabrication machines

Story

Schematics

Centipede Dropper

Code

Centipede Dropper

Credits

GadhaGod

Comments

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