FSR Sensor data send via Bluetooth

I want to send the FSR sensor data via Bluetooth to my android phone.

The first problem is that when i click on the bluetooth device on my phone i get an error message.
“Not communicate with the device…simmilar”
And the red led blinking.

What is the problem? The code or hardware?

#include <SoftwareSerial.h>

int txPin = 7;
int rxPin =6;

SoftwareSerial BlueToothConnect(txPin, rxPin);

int bt_on = 1; // state pin
int FSR_Pin = A0;

void setup() {

void loop(){
int FSRReading = analogRead(FSR_Pin);
bool ok=digitalRead(bt_on);
if (ok)
Serial.println(“Nincs csatlakoztatva az BT vevő!”);

The code or hardware?

The configuration of the bluetooth module?
The phone app?

int bt_on = 1; // state pin

You are using pin 1 for communicating with the PC.

The phone app is Generic bluetooth plotter.
Communicating with the PC?

Communicating with the PC?

Yes. Pins 0 and 1 are the hardware serial pins (on most Arduinos).

The bluetooth modul state pin?

The arduino 1.6.9 serial monitor
"not connected the bt receiver"

It would seem that you are trying to use the bluetooth state pin, which is unnecessary and, in your case, possibly detrimental. I suggest you junk the whole setup and start over. Get Arduino to work with the FSR, whatever that is, doing its thing with the serial monitor, and then connect bluetooth in the standard manner.

You might find the following background notes useful


and being a bit more forthcoming about the phone app might be helpful.

The only Fsr Sensor works fine, with other code.
The bluetooth module not working, i try 3 simple program. My phone can not communicate with device the error message. CC41-a modul.