Of the Cats, by the Cats, for the Cats

One day my best friend noticed that she was not spending much time with her cats and she felts a bit sorry.

This is why I am starting this project.

Step 1: Parts

Arm ... You just prepare only the part

- WIZwiki-W7500

- HC-SR04(Ultrasonic)

- SG-90(Servomotor)

- Jumper cable

Step 2: Schematic

Step 3: Source Code

mbed :mbed link

#include "mbed.h"<br>#include "stdlib.h"  //For rand function 
#include "Servo.h"

#include "HCSR04.h"

HCSR04 sensor(D11, D12); //(Trig Pin, Echo Pin) 

Servo myservo(D6);

int main()
{
  	int number = 0;

        while(1){ 

		long d = sensor.distance(1);
        	printf("d = %d\r\n",d);   

		myservo = 0.5;   

		if(d<=25)    //25cm
	        {
			number = rand()%11;  //0~10    

			double a = number*0.1;

			printf("%d = %3f\r\n",number,a);                      

			myservo = number*0.1;
		}    

	wait(0.2); 
    }

}

Step 4: Semblance

The size is greater than or equal to Card.

Step 5: Video

The cats were constantly coming and going.

You can make it easier.

If you have a question, please send me email([e-mail]) or write the comment about this project