LED Night project

Hi Josh

Could you fire me a copy of the PDFs? I will look at your code when I get to my home machine.

Thanks

Paul

Sure can!

First PDF

https://dl.dropboxusercontent.com/u/32115160/TM1803.pdf

Second PDF

https://dl.dropboxusercontent.com/u/32115160/2760339_PM_EN.pdf

OK....

Have had a look into the code, and without any hardware this is difficult to test. But here goes...

add the following code into the 'send_1M_pattern' function just ABOVE the 'send_strip(temp_data)' line.

// Convert Hex to seperate RGB Values

long r=(long)(temp_data>>16);

long g=(long)(r>>8);

long b=(long)temp_data;

// Apply multiplication factor for brightness

r = (float)r * (a_val/1024.0);

g = (float)g * (a_val/1024.0);

b = (float)b * (a_val/1024.0);

// Convert RGB values back to Hex

long temp_data = ((long)r << 16) | ((long)g << 8 ) | (long)b;

This code will apply a scaling factor to the output dependent on the value of variable 'a_val' this value should be set through an AnalogueRead on the pin connected to your variable resistor. This AnaglogRead instruction can be added just ABOVE the 'for (i=0;i<pattern_no;i++)' line so that the analogue value is not being polled continuously during the loop.

Let me know how you get on.

Now where do I wire that variable resistor? Also could you explain how do I create a slow fade to the colors? I'm so new at this that I will need help in this coding.

  {
    send_1M_pattern(pattern_test_rainbow, 10, 70);
  }




  /*
  frame++;
    if(frame<=10) LEDSTRIP_PATTERN_0();
    if(10<frame<=20) LEDSTRIP_PATTERN_0();
    if(20<frame<=30) LEDSTRIP_PATTERN_0();
    if(frame>30) frame=1;
   */
  //delay(1);
}




/*******************************************************************************
 * Function Name  : send_1M_pattern
 * Description    : Transmit pattern to whole 1 meter strip
 *                  
 * Input          : pointer to ROM pattern; pattern length; frame rate
 *                  
 * Output         : None
 * Return         : None
 *******************************************************************************/
void send_1M_pattern(const unsigned long data[][10], int pattern_no, int frame_rate)


{
  int i=0;
  int j=0;
  uint32_t temp_data;


  for (i=0;i<pattern_no;i++)
  {
    noInterrupts();
    for (j=0;j<10;j++)
    {
      // Convert Hex to seperate RGB Values
     long r=(long)(temp_data>>16);
     long g=(long)(r>>8);
     long b=(long)temp_data;

    // Apply multiplication factor for brightness
    r = (float)r * (a_val/1024.0);
    g = (float)g * (a_val/1024.0);
    b = (float)b * (a_val/1024.0);

// Convert RGB values back to Hex
long temp_data = ((long)r << 16) | ((long)g << 8 ) | (long)b;
      temp_data=pgm_read_dword_near(&data[i][j]);
      send_strip(temp_data);
    }
    interrupts();


    delay(frame_rate);


  }

I wasn't sure where exactly to put it but when I did what you said to do I got this error.

"Tri_Strip_Brightness.ino: In function 'void send_1M_pattern(const long unsigned int (*)[10], int, int)':

Tri_Strip_Brightness:226: error: 'a_val' was not declared in this scope"

Try moving the line "temp_data=pgm_read_dword_near(&data[i][j]);" above the code I sent you.

With respect to connecting your potentiometer.... The following tutorial covers this aspect well:

Arduino - ReadAnalogVoltage

I've decided to go a different rout then these LED strips. It seems it's not meeting the idea I had so I'm gonna go see what Adafruit can offer me. Thanks anyway.

You're welcome.