Automatic Fish feeder

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <Servo.h>

Servo servo;

char auth[] = "Blynk Auth Token";
char ssid[] = "your ssid";
char pass[] = "wifi password";

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);

  servo.attach(15); // NodeMCU D8 pin
  
 }
  
void loop()
{
  
  Blynk.run();
  
}
BLYNK_WRITE(V1)
{
   servo.write(param.asInt());
}

BLYNK_WRITE(V2)
{
  servo.write(0);
}
BLYNK_WRITE(V3)
{
  servo.write(90);
}