Controlling 9 micro servo motors with arduino & ultrasonic sensor module

hello!

i trying control 9 micro servo motors using arduino triggered ultrasonic sensor module. comes within 30cm of sensor, servos need move 180 degrees in sync each other. have managed control 3 micro servos using code:

#include <servo.h>

#define trigpin 12
#define echopin 13

servo myservo;
 
void setup() {
  serial.begin (9600);   
  pinmode(trigpin, output);
  pinmode(echopin, input);
  myservo.attach(9);
   
}

void loop() {
 int duration, distance,pos=0,i;
  digitalwrite(trigpin, low); 
  delaymicroseconds(2);
  digitalwrite(trigpin, high);
  delaymicroseconds(10);
  digitalwrite(trigpin, low);
  duration = pulsein(echopin, high);
  distance = (duration/2) / 29.1;
   serial.print(distance);
   serial.println(" cm");

   
  if (distance >0 && distance < 30)
  {
    myservo.write(180);
  }
  else{
    myservo.write(0);
  }
 
   
}



however, don't think circuit has enough voltage necessary power 9 motors. wondering if had advice how should go re-wiring , changing code? need add external power supply? have far used when connected via usb.

thank in advance!

quote

however, don't think circuit has enough voltage necessary power 9 motors.

current, actually

quote

i wondering if had advice how should go re-wiring?

difficult say, seeing didn't yet explain how it's wired.

quote

do need add external power supply?

without question- should 1 servo. see attached pic had 3.

Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Controlling 9 micro servo motors with arduino & ultrasonic sensor module

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