HOW to Use 130 Motor with ESP32

Description

The 130 motor driver module is compatible with servo motors, which has high efficiency and good quality fans.

It adopts a HR1124S motor control chip. HR1124S is a single-channel H-bridge driver chip for DC motor solutions. In addition, this chip has low standby current and low quiescent current.

The module is compatible with various single-chip control boards. In the experiment, we can control the rotation direction of the motor by outputting the voltage directions of the two signal terminals IN+ and IN- to make the motor rotate.

Working Principle

The chip is used to help drive the motor. We can’t drive it with a triode or an IO port due to its a large current of need. It is very simple to make the motor rotate. Just apply voltage to both ends of the motor. The direction of the motor is different in different voltage directions. Within the rated voltage, the higher the voltage, the faster the motor rotates; on the contrary, the lower the voltage, the slower the motor rotates, or even unable to rotate.

So we can use the PWM port to control the speed of the motor. We haven’t learned PWM here, so we use the high and low levels to control the motor first.

Required Components

Note: the motor is separated with its fan, you need to assemble it first.

Connection Diagram

Test Code

//*************************************************************************************
/*
 * Filename    : 130DC Fan motor
 * Description : Motor positive and negative rotation
 * Auther      : http://www.keyestudio.com
*/
//Define two pins interfaces of the motor, respectively 15 and 4
int INA = 15; //INA corresponds to IN+
int INB = 4;  //INB corresponds to IN-
void setup() {
  //Set the motor pins as output
  pinMode(INA, OUTPUT);
  pinMode(INB, OUTPUT);
}

void loop() {
  //Turn counterclockwise
  digitalWrite(INA, HIGH);
  digitalWrite(INB, LOW);
  delay(2000);
  //stop
  digitalWrite(INA, LOW);
  digitalWrite(INB, LOW);
  delay(1000);
  //clockwise rotation
  digitalWrite(INA, LOW);
  digitalWrite(INB, HIGH);
  delay(2000);
  //stop
  digitalWrite(INA, LOW);
  digitalWrite(INB, LOW);
  delay(1000);
}
//*************************************************************************************

Code Explanation

Set pins to GPIO4, GPIO15, when the pin GPIO4 outputs low levels and the pin GPIO15 outputs high levels, the motor will rotate counterclockwise; when both pins are set to low, the motor stops rotating.

Test Result

Connect the wires according to the experimental wiring diagram and power on. Switch the DIP switch ON the ESP32 expansion board to the ON end, after powering on, compile and upload the code to the ESP32. After uploading successfully，the fan will rotate counterclockwise for 2 seconds, stop for 1 second and clockwise for 2 seconds and stop for 1 second; cycle alternately.