SoftwareSerial bluetooth causing strange behaviour

Projects Networking, Protocols, and Devices
1

Hi guys

I am using an android device to send an angle value (between 0 and 10) via bluetooth and receive that data into arduino via the Genotronex library. Every thing works 100% until I uncomment the Genotronex line right at the bottom of the code. When I do that, the servo suddenly seems to jump, jump, jump etc to some weird value every 100 ms. When this line is commented out, the servo performs correctly and goes 100% to the values I am sending from Android. I just cant see hoe the println of the Genotronex can influence the incoming data???

#include <SoftwareSerial.h>
#include <Servo.h>

SoftwareSerial Genotronex(10, 11);
Servo angle_servo;

int servoPin = 9;
int ledpin=13;
char angle;
int motorPin = 0;
int motorSpeed;
int leftPin = 6;
int rightPin = 7;

String string_c;

void setup() 
{
  
  Genotronex.begin(9600);
  angle_servo.attach(servoPin);
  //Serial.begin(9600);
  Genotronex.println("Test Data");
  pinMode(ledpin,OUTPUT);
  pinMode(leftPin,INPUT);
  pinMode(rightPin,INPUT);
  //pinMode(motorPin, INPUT);
}
 
void loop()
{  
  
  if (Genotronex.available())
  {
    angle = Genotronex.read();
    int temp = angle - 48;
    angle_servo.write(temp * 17);
    
    motorSpeed = analogRead(motorPin);  
    String left = "|0";
    String right = "|0";  
    if(digitalRead(leftPin) == HIGH)
    {
     left = ",1";
    }
    else
    {
      left = ",0";
    }  
    if(digitalRead(rightPin) == HIGH)
    {
     right = ",1"; 
    }
    else
    {
      right = ",0";
    }  
    string_c = motorSpeed + left + right;
    //Genotronex.println(string_c);
  }  
  delay(100);  
}

Thanks for any advice!

2

Thanks for any advice!

Use the Serial instance to debug your program.

3

Hi guys

After a lot of more research, it turns out that there is a conflict between the Servo and SoftwareSerial libraries and the jittering servo is a well known issue. So I found another Servo library, but now I cant seem to install that one to test :0

Wow, I feel like a noob, but no matter where I put the PWMServo library folder, I get the error PWMServo does not name a type. Here is the library for those who are interrested: