Bluetooth Arduino Led Pin13 ON APK

Funcionamento do aplicativo apenas com dispositivos conectados via bluetooth;
Observe que o led do módulo bluetooth(JY MCU) estava piscando e quando está conectado para de piscar e fica aceso direto;
Os dispositivos estão conetctados via bluetooth - led está aceso direto.
Veja esquema de ligações, programa exemplo para Arduino, procedimento passo a passo, fotos e vídeos esplicativos em: http://sergioarduino.blogspot.com.br/
http://sergioarduino.blogspot.com.br/p/blog-page_6053.html

Description:

Operation of the application only with connected devices via bluetooth;

Walkthrough:

1 - Re-assemble the proto board as electric scheme;
2 - Connect the bluetooth (JY MCU) and Arduino module, see the LED is flashing;
3 - In Smartphone turn Bluetooth on and enter the application and press the Connect button;
4 - Note that the bluetooth module LED (JY MCU) and was blinking when connected to flashing and stay straight on;
5 - The devices are conetctados via bluetooth - Direct LED is lit.

6 - At this time all application buttons work and send data to the bluetooth module and the Arduino.

 The app installed on your smartphone remotely controls the Arduino (via bluetooth), digital port pin 13, this pin is connected to an LED that is already mounted on the Arduino board.

Use a smartphone with android to install this "apk.", In this example we used the Samsung Galaxy Tablet GT-P3100 Tab2 7.0 "with android version 4.0.

About configuring the Bluetooth module JY_MCU:

This module comes factory configured with:
Baud rate: 9600 bps;
Data bits: 8 bits;
Stop bits: 1, Parity: none;
Summary (9600 bps, 8N1);
Other commands can be used:

AT - Returns "OK", indicating that the bluetooth module is responding to commands
AT + VERSION - Returns the version of the board firmware
AT PINXXXX + - Change the password of bluetooth, where XXXX is the new password, and you can use any combination of 4 numbers. This command returns "OKsetPIN"
AT + BAUDX - Changes the baud rate (baud rate) of the module, and X to have the values ​​1-9;

Example: AT + BAUD4 command changes the speed of the module to 9600 (default).
See the wiring diagram and videos: http://sergioarduino.blogspot.com.br/
https://www.youtube.com/watch?v=Y__8eQPHky0

We can see that when you press the "ON" button an image of the lamp illuminates (yellow) along with the led on the Arduino and when you press the "OFF" button turned off the lamp (transparent color) of Android and simultaneously the LED goes out.

The application communicates with the bluetooth which is connected to the serial (mySerial) 2-pin RX and TX of the Arduino-3) sending the data to the Arduino which in turn recebebe, interprets and makes the command of LED that is connected to the digital port pin 13.

The application has two "ON and OFF" buttons for on and off an LED or trigger a relay that can control (on / off) aparellhos connected to local power, such as radios, tv's, lamps and other devices.

 As we didactically demosntrando operation, we prefer in this instance to make a single pull of the LED digital pin 13 of Arduino.
Warning: When working with this application keep the screen always on (do not use sleep mode or sleep) because you may lose control over the device being triggered.

Note: To exit the application, always check first if the button is in the "OFF" mode - lamp off then press the "disconnect" and quit the application; Note that the bluetooth will flash indicating that the system is actually disconnected.
See more information about this app: http://sergioarduino.blogspot.com.br/
https://www.youtube.com/watch?v=Y__8eQPHky0

About data transmission:
When we press the "ON" button transmits your smartphone via bluetooth the character "l" (lowercase) and the Arduino turns on the LED digital pin 13;
When we press the "OFF" button transmits your smartphone via bluetooth the character "d" (lowercase) and the Arduino is off the led digital pin 13;
This is all you need to know to build your program:
ON button - send: character "l";
OFF button - send: character "d";
See the example program below, or on Arduino: http://sergioarduino.blogspot.com.br/
https://www.youtube.com/watch?v=Y__8eQPHky0

http://sergioarduino.blogspot.com.br/p/blog-page_6053.html