Battery connection problem

Projects General Guidance
1

I created an assembly and a programm that control a motor with an infrared controller. Everything's fine when i use it plugged on my computer but as soon as i plug it on a battery and activate the motor it start producing a tic-tic but doesn't move.
here's the programm:

//www.elegoo.com
//2018.12.19
#include <Servo.h>
Servo myservo;
#include <IRremote.h>

int RECV_PIN = 11;

IRrecv irrecv(RECV_PIN);

decode_results results;

void setup(){
  Serial.begin(9600);
  myservo.attach(9);
  myservo.write(90);// move servos to center position -> 90°
  irrecv.enableIRIn(); // Start the receiver
  
} 
void loop() {
  if (irrecv.decode(&results) && results.value == 16743045 ) {
    myservo.write(0);
    irrecv.resume();}
  if (irrecv.decode(&results) && (results.value) == 16718055 ) {
    myservo.write(90);
    irrecv.resume();}
  if (irrecv.decode(&results) && (results.value) == 16724175 ){
    myservo.write(180);
    irrecv.resume();
  }
  if (irrecv.decode(&results)){
    Serial.println(results.value);
    irrecv.resume();
  }
}

and a photo of the assembly:

f18fa024-0d8a-456d-ae8c-606d138c7263
f18fa024-0d8a-456d-ae8c-606d138c72631200×1600 192 KB

2

Welcome to the forum

What type of battery are you using ?
Would it be a PP3 9V battery by any chance ?

One like this ?

image
image225×225 21 KB

3

yes this one

4

image
image899×1599 74.9 KB

5

A PP3 battery is designed to power low current devices such as smoke detectors, not motors. It cannot provide the required current for your motors

Consider using 4 AA batteries in series instead

As a matter of interest, how are the motors connected to the Arduino ?

6

thanks for this piece of advice. The motor are conneced by simple cables

7

Bob, won't that barrel connector mean that the motor is drawing 5v from the Arduino board's voltage regulator? I seem to recall a concern about overheating that with too much current. Would it be better to directly power the servo from a power source instead of through the Arduino voltage regulator? That in addition to what you've pointed out about the low-current battery.

--HC

8

That was the point of asking how the motors were connected. I could, perhaps, have been more explicit

Motors and servos should not be powered directly from the Arduino but by an external power supply

9

I understand. To be completely clear, it was not my intention to needle you about how you presented your information. You know a lot more than I do, I was walking softly adding anything.

--HC

10

No problem as far as I am concerned. As I said I could have posed my question better