View source for KS0556 Keyestudio 8833 Motor Driver Expansion Board

== Description ==

The 8833 motor driver expansion board uses PH2.0 terminals and an 8833 motor driver chip driven by the two-channel H bridge whose the largest current can be up to be 1.5A. It also integrates an IR receiver, ultrasonic sensor ports, analog ports, line tracking interfaces and pin headers for BT wifi and servo drivers. <br>


== Parameters ==

* Voltage	USB 5V，DC 6-9V
* Current	Max current is 3A，the real output is around 1A（2A, when the motor is loaded）
* Max Power
* Max power is 27W; in fact, it is 9W
* Working Temperature: -10~50℃
* Size: 69*56*18mm
* Weight: 25.5g
* Environmental attributes: ROHS

<br>[[Image:5028-3.png|600px|frameless]]<br>


Schematic Diagram:

<br>[[Image:5028-3.png|600px|frameless]]<br>



'''Install jumper caps'''

<br>[[Image:5028-3.png|600px|frameless]]<br>

Then connect motors

<br>[[Image:5028-3.png|600px|frameless]]<br>

Test Code

<pre>

#define ML_Ctrl 4  //define control pins of the left motor
#define ML_PWM 6   //define PWM control pins of the left motor
#define MR_Ctrl 2  //define control pins of the right motor
#define MR_PWM 5   //define PWM control pins of the right motor

byte speeds_L = 200; //initial speed of the left motor is 200
byte speeds_R = 200; //initial speed of the right motor is 200
String speeds_l, speeds_r; //receive character strings of PWM，used to transfer into the PWM value

void setup() {
  
  pinMode(ML_Ctrl, OUTPUT);
  pinMode(ML_PWM, OUTPUT);
  pinMode(MR_Ctrl, OUTPUT);
  pinMode(MR_PWM, OUTPUT);
  
}


void loop() {


      Car_front();  //go forward
      delay(2000);
      Car_back();   //go back
      delay(2000);
      Car_left();   //turn left
      delay(2000);
      Car_right();  //turn right
      delay(2000);
      Car_Stop();   //stop
      delay(2000);

}


/***************motor running**************/
void Car_back() {
  
  digitalWrite(MR_Ctrl, LOW);
  analogWrite(MR_PWM, speeds_R);
  digitalWrite(ML_Ctrl, LOW);
  analogWrite(ML_PWM, speeds_L);
  delay(10);
}

void Car_front() {
  
  digitalWrite(MR_Ctrl, HIGH);
  analogWrite(MR_PWM, 255 - speeds_R);
  digitalWrite(ML_Ctrl, HIGH);
  analogWrite(ML_PWM, 255 - speeds_L);
  delay(10);
}

void Car_left() {
  
  digitalWrite(MR_Ctrl, HIGH);
  analogWrite(MR_PWM, 255 - speeds_R);
  digitalWrite(ML_Ctrl, LOW);
  analogWrite(ML_PWM, speeds_L);
  delay(10);
}

void Car_right() {
  
  digitalWrite(MR_Ctrl, LOW);
  analogWrite(MR_PWM, speeds_R);
  digitalWrite(ML_Ctrl, HIGH);
  analogWrite(ML_PWM, 255 - speeds_L);
  delay(10);
}

void Car_Stop() {
  
  digitalWrite(MR_Ctrl, LOW);
  analogWrite(MR_PWM, 0);
  digitalWrite(ML_Ctrl, LOW);
  analogWrite(ML_PWM, 0);
  delay(10);
}


</pre>

== Test Result ==

The motor will rotate clockwise for 2s then anticlockwise for 2s, turn left for 2s, turn right for 2s and stop for 2s.