How to Connect a Brushless Driver to An Arduino?

Please follow the steps below to connect the stepper driver to Arduino:

Connect the SV and F/R of the driver to the Arduino’s digital port. For example, PIN2 and PIN9;
Connect the GND of the driver to the GND of Arduino;
Short-circuit the EN and GND of the driver;
Download the program to Arduino and power the Arduino through the 5V power supply;

The schematic below shows the basic connections for the Arduino, brushless driver, power supply and brushless motor.


Below is an example of Arduino code that makes a motor run forward for 5 seconds and then reverse for 5 seconds. This code works by using a digital pin of the driver to determine the direction of rotation of the motor, while the PWM signal controls the speed.

const int pwmPin = 9;
const int directionPin = 2;
const int speed = 255;

void setup() {
pinMode(pwmPin, OUTPUT);
pinMode(directionPin, OUTPUT);
}

void loop() {

digitalWrite(directionPin, HIGH);
analogWrite(pwmPin, speed);
delay(5000);

analogWrite(pwmPin, 0);
delay(1000);

digitalWrite(directionPin, LOW);
analogWrite(pwmPin, speed);
delay(5000);

analogWrite(pwmPin, 0);
delay(1000);
}

In this code, "digitalWrite" is used to set the direction of the motor, and "analogWrite" is used to control the speed of the motor. "HIGH" and "LOW" are used to control the direction pin, thereby determining the direction of rotation of the motor. The duty cycle of the PWM signal is set by the "SPEED" variable, which can be adjusted to change the speed of the motor.

For practical applications, make sure your motor driver and Arduino board are compatible and follow all safety guidelines. If your motor driver requires different control signals or has special wiring needs, please adjust the code accordingly.

Updated on: 30/04/2024