Issue my shield to drive 2 DC motor for my car but only left and reverse work

Need Help With My Project
21

Yeap, exactly as you are describing…

1 Like
22

I buyed a new board today and the issue is still same so It must be coding issues.

Attachment_1605631501
Attachment_16056315013024×4032 2.43 MB

23

I don’t think many people reading this topic thought that a new NodeMCU and motor shield would produce a different result.

Did you ever remove the cover over the front steering and work out whether it was a servo or motor?
Did you try monitoring the voltages on the output pins of the shield, running a demo sketch etc?

Pete.

24

No I haven’t tried yet.ok would do that.
Front is the motor not servo.

25

Screenshot_2020-11-20-03-10-16-93_5858a19279ddd3b9634277a5bf37e3bf
Screenshot_2020-11-20-03-10-16-93_5858a19279ddd3b9634277a5bf37e3bf1080×2340 913 KB
I ordered Arduino shield today.can anyone could help me with the code so I could get it work with blynk.

26

Well, that’s a step backwards - especially if you want to use it with Blynk.

Pete.

27

Sir here is the code finally steering blynk joystick does move the RC left,right and other for fwd, backward. the issue is I am not being able to control the RC properly as it disconnects or takes time to halt any suggestion for proper handling with code.

#define BLYNK_PRINT Serial 
#include  <ESP8266WiFi.h>
#include  <BlynkSimpleEsp8266.h>

// You should get Auth Token in the Blynk App. 
// Go to the Project Settings (nut icon). 
char auth[] = "XrALdZIsmiphdZ-S2dsDbGkJhT*****"; 

// Your WiFi credentials. 
// Set password to "" for open networks. 
char ssid[] = "*********"; 
char pass[] = "*********"; 

int PWMA=5;//Right side 
int PWMB=4;//Left side 
int DA=0;//Right reverse 
int DB=2;//Left reverse 

void setup(){ 
 // Debug console 
 Serial.begin(115200); 
 Blynk.begin(auth, ssid, pass); 
 pinMode(PWMA, OUTPUT); 
 pinMode(PWMB, OUTPUT); 
 pinMode(DA, OUTPUT); 
 pinMode(DB, OUTPUT); 
} 

void loop(){ 
Blynk.run(); 
  
} 

// Handling Joystick data 
BLYNK_WRITE(V2){
int x = param[0].asInt(); 
int y = param[1].asInt();  
if(x==1 && y==0){        //RIGHT
  Serial.print("right v2");
     digitalWrite(PWMB, HIGH); 
     digitalWrite(DB, LOW); 
}else if(x==-1 && y==0){        //LEFT

  Serial.print("left v2");
         digitalWrite(PWMB, HIGH); 
     digitalWrite(DB, HIGH); 
}else if(x==0 && y==0){        //Stay 
  Serial.print("stay v2");
     digitalWrite(PWMA, LOW); 
     digitalWrite(DA, LOW); 
     
     digitalWrite(PWMB, LOW); 
     digitalWrite(DB, LOW); 
}
}

BLYNK_WRITE(V1){ 
int x = param[0].asInt(); 
int y = param[1].asInt();  
if(x==1 && y==0){             //fwd   
  Serial.print("fwd v1");
     digitalWrite(PWMA, HIGH); 
     digitalWrite(DA, LOW); 
    
   
}else if(x==-1 && y==-0){        //back
  Serial.print("back v1");
     digitalWrite(PWMA, HIGH); 
     digitalWrite(DA, HIGH); 
    } 


else if(x==0 && y==0){        //Stay 
  Serial.print("stay v1");
     digitalWrite(PWMA, LOW); 
     digitalWrite(DA, LOW); 
     
     digitalWrite(PWMB, LOW); 
     digitalWrite(DB, LOW); 
}

}