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  5. Arduino dB Meter 
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  7. IOIO is going....bluetooth
  8. Attiny 2313 bluetooth bee RC car
  9. Compass and temperature added
  10. AVR programmer
  11. USB2Serial and Ethernet POE
  12. Arduino LPG Sensor
  13. Program the Arduino Mini 05
  14. Lipo Rider Pro in action
  15. EZ Robot Builder kit arrived 10 Nov 2012
  16. Arduino VA Meter!
  17. 05 Nov 2012 Project Sentry Gun.
  18. Attiny85 PIR Sensor 10 Dec 2012 
  19. 0-30VDC3A and 2-28VDC10A bench PSU's
  20. 19 Dec 2012 Arduino Voltmeter LCD
  21. 29 Dec 2012 Arduino Tachometer&Speedometer LCD
  22. 03 Jan 2013 Arduino AC Phase Control. 
  23. 18 Jan 2013 Arduino Distance Meter
  24. 22 Jan 2013 Arduino Digital Clock and Date
  25. 31 Jan 2013 Arduino Digital Clock and Date 8x2 LCD
  26. Feb 2013 LCD and Backpack
  27. Feb 2013 7 Segment Serial Clock Sparkfun. Distance Sensor with "newping" library
  28. Feb 2013 Lelo Remote
  29. 01/03/2013 Arduino Adafruit 7 Seg Digital Clock with RTC and backpack 
  30. Arduino Frequency Meter 26/03/2013
  31. Another RC  Car controlled by Arduino 06/04/2013
  32. My quadcopter project update 25 April 2013
  33. My Aqua Quad Copter Flying 26 April 2013enlightened
  34. Another monster RC truck;strong one! 11July2013cool
  35. X-Frame Quad Copter 31 July 2013cool
  36. Arduino GSM Sheild added.28/8/2013
  37. 1.8inch TFT screen 13/09/2013cool
  38. 04/11/2014 added PID Soldering Iron Control
  39. Added bluetooth servo control 04/11/2014
  40. ESP8266 first try.16/03/2015
  41. Arduino Uno Quadcopter 19 May 2015
  42. IOT WemosD1 Amp Meter

 

 


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Arduino Bluetooth Relay Control and Android 14/06/2013

I bought this Android application from the play market for close to nothing. Also very nice assistance and service from the developer of the app.

What makes this app different is the photos that can be attached to the specific relay you want to control. 

Here is a screen shot on my S3

Code

/*BT Relay Control for Arduino MEGA

Enables BT Relay control using serial port1 (and JY-MCU bluetooth serial converter) and ports Relays[] as outputs. Feedback is provided sending back the state of the 8 relays in a byte, in which a bit '1' at the n position means the n relay is on.

Debug serially using Serial Monitor (serial port 0)  

Author: Juan Luis Gonzalez Bello

Date: 07/06/2013  

Get the app on google play:

https://play.google.com/store/apps/details?id=com.apps.emim.btrelaycontrol&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hcHBzLmVtaW0uYnRyZWxheWNvbnRyb2wiXQ..

*/

int MAX_RELAYS = 8;

// Arrays used to "decode" incoming bytes and ports int Relays[8]  = {53, 51, 49, 47, 45, 43, 41, 39}; int KeysOn[8]  = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'}; int KeysOff[8] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'}; int RelayStatus = 0;

void setup() {

  Serial1.begin(9600); // initialize BT serial port:

  Serial.begin(9600);  // initialize debug serial port:

  // Initialize PORTS

  for(int i = 0; i < MAX_RELAYS; i++){

    pinMode(Relays[i], OUTPUT);

    digitalWrite(Relays[i], LOW);

  }

  int zero = 0;        // 0 cannot be used with .write directly, for some reason compiler gets errors

  Serial1.write(zero); // Send feedback in order to turn off buttons on Android app }

void loop() {

  // Send FeedBack to Android App so you know if the relay is actually turned on.

  Serial1.write(RelayStatus);

  if (Serial1.available() > 0) {

   int inByte = Serial1.read();

    for(int i = 0; i < MAX_RELAYS; i++){

      TurnOn_Relay_on_Key(inByte, KeysOn[i], Relays[i]);

      TurnOn_Relay_off_Key(inByte, KeysOff[i], Relays[i]);

    }  }}

// Tunr on relay selected relay

void TurnOn_Relay_on_Key(int input, int key, int port){

  if (input == key){

    digitalWrite(port, HIGH); 

    Serial.print("Relay turned On: "); // Debug

    Serial.println((char)key);

   RelayStatus |= (1 << (key - KeysOn[0])); //  Set Status } }

// Tunr off relay selected relay

void TurnOn_Relay_off_Key(int input, int key, int port){

  if (input == key){

    digitalWrite(port, LOW);

    Serial.print("Relay turned Off: "); // Debug

    Serial.println((char)key);

    RelayStatus &= ~(1 << (key - KeysOff[0])); // Clear Status } }

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