Bluetooth module delay

Projects Programming
1

Hello im building arduino car for my science project, and i have quite big delay when controling car trought mobile app, sometimes it works fine but other i have like 4s delay. Anybody some ideas why is it happening ? Im useing arduino UNO and HC-05 module. <#include <AFMotor.h>
#include <SoftwareSerial.h>
//0,1

SoftwareSerial BTSerial (0,1); // Rx a Tx
AF_DCMotor Motor_1(1); //lavy predny
AF_DCMotor Motor_2(2); //lavy zadny
AF_DCMotor Motor_3(3); //predny pravy
AF_DCMotor Motor_4(4); //zadny pravy
int rychlo = 250;
int fast = 250; //M4
int fast2 = 250;
const int ledPin = 7;

void setup() {
BTSerial.begin(9600);
pinMode(ledPin, OUTPUT);
}

void loop() {

if (BTSerial.available()) {
char znak_citany = BTSerial.read ();

switch(znak_citany) {
  case 'F':
    dopredu();
    break;
  case 'B':
    dozadu();
    break;
  case 'L':
    dolava();
    break;
  case 'R':
    doprava();
    break;
  case '1':
    dolava_hore();
    break;
  case '2':
    doprava_hore();
    break;
  case '3':
    dolava_dolu();
    break;
  case '4' :
    doprava_dolu();
    break;
  case '5':
    otocenie_doprava();
    break;
  case '6':
    otocenie_dolava();
    break;
  case 'S':
    zastavenie();
    break;
  case 'U':
    digitalWrite(ledPin, HIGH);
    break;
  case 'D' :
    digitalWrite(ledPin, LOW);
    break;
  default:
    zastavenie();
    break;
 
  }

}
}

void dopredu () {
Motor_1.setSpeed(rychlo);
Motor_1.run(FORWARD);
Motor_2.setSpeed(rychlo);
Motor_2.run(FORWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(FORWARD);
Motor_4.setSpeed(rychlo);
Motor_4.run(FORWARD);
}
void dozadu () {
Motor_1.setSpeed(rychlo);
Motor_1.run(BACKWARD);
Motor_2.setSpeed(rychlo);
Motor_2.run(BACKWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(BACKWARD);
Motor_4.setSpeed(rychlo);
Motor_4.run(BACKWARD);

}

void dolava () {
Motor_1.setSpeed(rychlo);
Motor_1.run(FORWARD);
Motor_2.setSpeed(rychlo);
Motor_2.run(BACKWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(FORWARD);
Motor_4.setSpeed(rychlo);
Motor_4.run(BACKWARD);
}

void doprava () {
Motor_1.setSpeed(rychlo);
Motor_1.run(BACKWARD);
Motor_2.setSpeed(rychlo);
Motor_2.run(FORWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(BACKWARD);
Motor_4.setSpeed(rychlo);
Motor_4.run(FORWARD);

}

void dolava_hore () {
Motor_1.setSpeed(fast2);
Motor_1.run(FORWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(FORWARD);
}

void doprava_hore () {
Motor_2.setSpeed(fast2);
Motor_2.run(FORWARD);
Motor_4.setSpeed(fast);
Motor_4.run(FORWARD);
}

void dolava_dolu () {
Motor_2.setSpeed(rychlo);
Motor_2.run(BACKWARD);
Motor_4.setSpeed(fast);
Motor_4.run(BACKWARD);
}

void doprava_dolu () {
Motor_1.setSpeed(fast2);
Motor_1.run(BACKWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(BACKWARD);
}

void zastavenie () {
Motor_1.setSpeed(0);
Motor_1.run(RELEASE);
Motor_2.setSpeed(0);
Motor_2.run(RELEASE);
Motor_3.setSpeed(0);
Motor_3.run(RELEASE);
Motor_4.setSpeed(0);
Motor_4.run(RELEASE);

}

void otocenie_doprava() {
Motor_1.setSpeed(rychlo);
Motor_1.run(FORWARD);
Motor_2.setSpeed(rychlo);
Motor_2.run(BACKWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(BACKWARD);
Motor_4.setSpeed(rychlo);
Motor_4.run(FORWARD);

}
void otocenie_dolava() {
Motor_1.setSpeed(rychlo);
Motor_1.run(BACKWARD);
Motor_2.setSpeed(rychlo);
Motor_2.run(FORWARD);
Motor_3.setSpeed(rychlo);
Motor_3.run(FORWARD);
Motor_4.setSpeed(rychlo);
Motor_4.run(BACKWARD);

}/>

2

Your topic was MOVED to its current forum category which is more appropriate than the original as it has nothing to do with Installation and Troubleshooting of the IDE

3

have a read of how-to-get-the-best-out-of-this-forum
for example, upload your code using code tags </>
did you implement the mobile app or us2 an existing one

4

Hi @scorpion258,

you are welcome in this forum. Though you violated an important rule:
posting code not as a code-section

If you RE-edited your post I will answer some of the things that are problematic in your code

best regards Stefan

5

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