Only two of four motors working on Keyestudio 4wd BT Car V2.0

Other Hardware Motors, Mechanics, Power and CNC
1

When i upload the keyestudio 4wd BT Car V2.0 lesson 8 motor driver shield, Tt's uploaded successfully but just M1 and M2 motors are ruining M3 and M4 motors are not working i tried to change the jumblers but same result, if you can help
Thanks A lot.

/*
 keyestudio 4wd BT Car V2.0
 lesson 8
 motor driver shield
 http://www.keyestudio.com
*/ 
#define ML_Ctrl 4     // define the direction control pin of B motor
#define ML_PWM 5   //define the PWM control pin of B motor
#define MR_Ctrl 2    //define direction control pin of A motor
#define MR_PWM 9   //define the PWM control pin of A motor
void setup()
{
  pinMode(ML_Ctrl, OUTPUT);//define direction control pin of B motor as output
  pinMode(ML_PWM, OUTPUT);//define PWM control pin of B motor as output
  pinMode(MR_Ctrl, OUTPUT);//define direction control pin of A motor as output.
  pinMode(MR_PWM, OUTPUT);//define the PWM control pin of A motor as output
}
void loop()
{ 
  digitalWrite(ML_Ctrl,HIGH);//set the direction control pin of B motor to HIGH
  analogWrite(ML_PWM,200);//set the PWM control speed of B motor to 200
  digitalWrite(MR_Ctrl,HIGH);//set the direction control pin of A motor to HIGH
  analogWrite(MR_PWM,200);//set the PWM control speed of A motor to 200

  //front
  delay(2000);//delay in 2s
  digitalWrite(ML_Ctrl,LOW);//set the direction control pin of B motor to LOW

  analogWrite(ML_PWM,200);//set the PWM control speed of B motor to 200  
  digitalWrite(MR_Ctrl,LOW);//set the direction control pin of A motor to LOW
  analogWrite(MR_PWM,200);//set the PWM control speed of A motor to 200
   //back
  delay(2000);//delay in 2s 
  digitalWrite(ML_Ctrl,LOW);//set the direction control pin of B motor to LOW
  analogWrite(ML_PWM,200);//set the PWM control speed of B motor to 200
  digitalWrite(MR_Ctrl,HIGH);//set the direction control pin of A motor to HIGH
  analogWrite(MR_PWM,200);// set the PWM control speed of A motor to 200

    //left
  delay(2000);//delay in 2s
  digitalWrite(ML_Ctrl,HIGH);//set the direction control pin of B motor to HIGH
  analogWrite(ML_PWM,200);//set the PWM control speed of B motor to 200
  digitalWrite(MR_Ctrl,LOW);// set the direction control pin of A motor to LOW
  analogWrite(MR_PWM,200);//set the PWM control speed of A motor to 200

   //right
  delay(2000);//delay in 2s
  analogWrite(ML_PWM,0);//set the PWM control speed of B motor to 0
  analogWrite(MR_PWM,0);//set the PWM control speed of A motor to 0

    //stop
  delay(2000);//delay in 2s
}//*************************************************************************
2

Do you have a schematic to upload here for viewing?

Also, show a good picture of your wiring.

I see the code is only writing to two motors (R and L).

Your code works. Start both motors. Left turn. Right turn. Stop.

3

The message that appears at the end of your post,
( Avrdude: skt500...........),
means that your code was not loaded on Arduino.

Correct this problem and maybe everything will work correctly after loading your code.

4

It seems that you only enable 2 engines.
Are the motors connected in parallel?
See more information about this type of project at:

https://docs.keyestudio.com/projects/KS0470/en/latest/KS0470-Arduino.html

5

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