#include <Servo.h>
const int snum = 4;
Servo servo[snum];
const int brand = 3;
const int sinhron = 4;
bool bbrand = false;
bool bsinhron = false;
bool state = false;


void setup() {
  for (int i = 0; i <= snum; i++) {
    servo[i].attach(i+9);
  }
  randomSeed(analogRead(0));
  pinMode(brand, INPUT_PULLUP);
  pinMode(sinhron, INPUT_PULLUP);

}

void loop() {
  if (digitalRead(brand) != HIGH) {
    bbrand = true;
    bsinhron = false;
  }
  if (digitalRead(sinhron) != HIGH) {
    bsinhron = true;
    bbrand = false;
  }
  if (bbrand) {
    servo[0].writeMicroseconds(random(500,2401));
    servo[1].writeMicroseconds(random(500,2401));
    servo[2].writeMicroseconds(random(500,2401));
    servo[3].writeMicroseconds(random(500,2401));
    delay (500);
    if (state == true) {
      state = false;
    }
  }
  if (bsinhron) {
    if (state == false) {
      servo[0].writeMicroseconds(500);
      servo[1].writeMicroseconds(500);
      servo[2].writeMicroseconds(500);
      servo[3].writeMicroseconds(500);
      state = true;
      delay(500);
    }
  if (state == true ) {
    servo[0].writeMicroseconds(2400);
    servo[1].writeMicroseconds(2400);
    servo[2].writeMicroseconds(2400);
    servo[3].writeMicroseconds(2400);
    state = false;
    delay(500);

  }
  }
}