Controlling Brushless Motor with Built-In Driver

[mfariasn]

I am trying to vary the speed for a brushless motor that comes with a built-in driver using an Arduino UNO. This is the motor

28.3AU $ |12V/24V DC Brushless Gear Motor JGB37 3525 Speed Regulating Motor...

The power lines are plugged to an external battery and the blue line to pin 6, the code is

int motor1_pin = 6;

void setup() {
  pinMode(motor1_pin, OUTPUT);
}

void loop() {
  analogWrite(motor1_pin, 255);
  delay(1000);
  analogWrite(motor1_pin, 127);
  delay(1000);
  analogWrite(motor1_pin, 0);
  delay(500); 
}

Currently the motor turns on and off but the speed isn't changing. Any guidance on how to work with this type of motor will be appreciated, thanks.

[Railroader]

@mfariasn

void loop() {
  analogWrite(motor1_pin, 255);
  delay(1000);
  analogWrite(motor1_pin, 127);
  delay(1000);
  analogWrite(motor1_pin, 0);
  delay(500); * /
  digitalWrite(motor1_pin, LOW);
  delay(1000);
  digitalWrite(motor1_pin, HIGH);
  delay(1000);
}

HIGH and LOW are boolean variables and should not be used this way.
You need to operate the direction. Use a "dirPin", a second output and set it LOW or HIGH in the code.

Your link goes to a sales site, not a real datasheet. I don't see what the Yellow line: FG signal line is used for.

[Railroader]

Thanks for a well posted question showing code and a link.

[bluejets]

Do you have the negative of the motor common to the Arduino negative and supply.?

[gilshultz]

I believe the yellow wire is a pulse generated as the motor rotates.

[mfariasn]

No, the neg of the motor just goes to the neg of the battery, should I also put it to the Arduino?

[mfariasn]

This was the solution!! I put the Arduino, the motor and the battery on a common ground and now its working!!