LED control via Android smartphone

Using Arduino LEDs and Multiplexing
1

This BlinkM LED is controlled via an Android smartphone, using a virtual joystick

More info re Joystick Bluetooth Commander application in the Networking section

Enjoy

2

Cool, is there an .ino associated with this to look at?

3

Cool, is there an .ino associated with this to look at?

Sure

// AndroBlinkM V1.2
// Arduino test sketch for Joystick BT Commander
// Drive a BlinkM LED

// * BlinkM connections to Arduino
// * GND     Analog 2
// * +5V     Analog 3
// * SDA     Analog 4
// * SCK     Analog 5

#include "Wire.h"
#include "BlinkM_funcs.h"

#define    DEBUG          true

#define    blinkm_addr  0x00
#define    ledPin       13                // LED pin
#define    STX          0x02
#define    ETX          0x03

int i=0;
int cmd[5] = {9, 9, 9, 9, 9};

void setup()  {
  Serial.begin(57600);                   // Adjust to your specific BT Board
  pinMode(ledPin, OUTPUT);

  BlinkM_beginWithPower();  
  BlinkM_stopScript( blinkm_addr );      // turn off BlinkM startup script
  BlinkM_fadeToRGB( blinkm_addr, 0x00, 0x00, 0x00);
}

void loop() {
   if(Serial.available())  {             // Data received from smartphone
    delay(5);
    cmd[0] =  Serial.read();  
    if(cmd[0] == STX)  {  
      i=1;      
      while(Serial.available() && ((cmd[i]=Serial.read()) != ETX)) {
        if(i>3)  break;
        i++;
      }
    }
  if(i==2)    setLED(cmd[1]);
  if(i==3)    setBlinkM(cmd[1], cmd[2]);  
  }
  delay(5);
}

void setBlinkM(int hue, int bright)    {
  hue = map(hue, 10, 110, 0, 255);
  bright = map(bright, 10, 110, 0, 255);
  bright = constrain(bright, 7, 255);
  if(DEBUG)    { Serial.print(hue);  Serial.print(", ");  Serial.println(bright); }  // ** DEBUG **
  BlinkM_fadeToHSB(blinkm_addr, hue, 255, bright);    // set blinkM hue & brightness
  delay(20);
}

void setLED(int LEDstatus)  {
  switch (LEDstatus) {
    case '1':
      if(DEBUG)    Serial.println("Button: ON");    // ** DEBUG **
      digitalWrite(ledPin, HIGH);
      BlinkM_setRGB( blinkm_addr, 0xff, 0xff, 0xff); 
      break;
    case '2':
      if(DEBUG)    Serial.println("Button: OFF");    // ** DEBUG **
      digitalWrite(ledPin, LOW);
      BlinkM_setRGB( blinkm_addr, 0x00, 0x00, 0x00);
      break;
  }
}

loop() code is identical as the pan/tilt project shown in the Robotic Section

More info for blinkM here

4

Joystick Bluetooth Commander Version 2.5 here

5

Arduino sketch needs to be modified for Joystick Bluetooth Commander V3.X
(modified communication protocol)
More details here

6

Joystick Bluetooth Commander is now Version 5.1

800×450 20.1 KB

Code should be updated with new communication protocol
More info here and here