initializes sg90 9g micro servo motor on arduino device.

fishfeeder.ino

#include<Servo.h>

Servo servo;

int pos = 0;
int CLOSED_POSITION = 90;
int OPEN_POSITION = 0;
int MILISECOND = 1000;
void setup() {
  servo.attach(0);

}

void loop() {
  servo.write(CLOSED_POSITION);
  delay(MILISECOND*5);  //PULSE PERIOD
  servo.write(OPEN_POSITION);
  delay(1000); // HOLD PERIOD
}