BLE Problem

Need Help With My Project
1

The Bluetooth isn’t connecting to the app. Every time I click connect it says unable to connect.

2

http://docs.blynk.cc/#widgets-other-ble

3

That doesn’t help It used to work and connect perfectly but then it randomly stopped connecting and I even tried a new Bluetooth piece

4

Then you need to give us more details… App version, Phone type, show your code, etc… BLE/BT is still in beta and much can change.

5

I have the most updated app for the iphone 6S.
Code:

#include <Blynk.h>
#define BLYNK_PRINT Serial 
#include <BlynkSimpleSerialBLE.h> 
#include <SoftwareSerial.h>
// You should get Auth Token in the Blynk App. Go to the Project Settings (nut icon).
char auth[] = "d7101319e24d4c61af2429ec19ce35d6"; 
const int groundpin = 18;             // analog input pin 4 -- ground
const int powerpin = 19;              // analog input pin 5 -- voltage
const int xpin = A4;                  // x-axis of the accelerometer
const int ypin = A2;                  // y-axis
const int zpin = A0;                  // z-axis (only on 3-axis models)
SoftwareSerial SerialBLE(10, 11); // RX, TX
int maximum = 0;
int maxmax = 0;
int xValue = 0;
int yValue = 0;
int zValue = 0;
void setup() 
{
    // initialize the serial communications:
  Serial.begin(9600);

  // Provide ground and power by using the analog inputs as normal
  // digital pins.  This makes it possible to directly connect the
  // breakout board to the Arduino.  If you use the normal 5V and
  // GND pins on the Arduino, you can remove these lines.
  pinMode(groundpin, OUTPUT);
  pinMode(powerpin, OUTPUT);
  digitalWrite(groundpin, LOW);
  digitalWrite(powerpin, HIGH);

Serial.begin(9600);
SerialBLE.begin(9600); 
Blynk.begin(SerialBLE, auth); 
Serial.println("Waiting for connections...");
}
void loop() {
  xValue = analogRead(xpin);
  // print a tab between values:
  //Serial.print("\t");
  yValue = analogRead(ypin);
  // print a tab between values:
  //Serial.print("\t");
  zValue = analogRead(zpin);
  //Serial.println();
  // delay before next reading:
  delay(500);
  maximum = max (xValue,yValue);
 maxmax = max(maximum,zValue);
 Serial.print ("maximum Final");
  Serial.println ( maximum);

Blynk.run();
// You can inject your own code here. 
// Remember to avoid delay() function!
}
6

Then as stated in the document link I showed you, it is currently only (fully) supported by Android… According to the developers, it is still a work in progress.

@Eugene can you confirm if this is still the case? Thank you.

@Benjamin You have a busy main void loop() and a delay… this will be the most likely issue in your disconnection. Please try to keep the main loop clear and use BlynkTimer routines.

8

Blynk iOS app should work fine with BLE devices (not classic BT). What device you’re trying to connect to?
Anyway, I would recommend to upload minimally working sketch to the device and test BLE connectivity. Please refer to this post: A classic one : Arduino + Iphone + nrf8001

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