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Author Topic: LED RGB 64-control individually  (Read 12115 times)
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Wisconsin
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Whoa Whoa Whoa.

You are going to use 5050 SMD RGB leds on a POV project?
You will have to get a custom board for that, and seeing has how you want it to span your wheel, that'll be one pricey board.

Just get this.  Way easier, way faster.
http://www.adafruit.com/products/5

You'll also need this for that
https://www.adafruit.com/products/46

amounts to $59.50.
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who has to sell.????

 I need a  AS1130 and 64 RGB LED smd 5050.
I have only to pay for Paypal.i am from Argentina.
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You can get the part for free as long as you dont need a lot: (Free samples)
http://www.ams.com/eng/Products/Lighting-Management/LED-Driver-ICs/AS1130/%28oi%29/1
Also you can buy less than 1000 pieces there.

But Digikey has the parts:
http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&KeyWords=AS1130


BTW: You can use the AS1130 with 4pin RGB LEDs too, but as I understand you cannot use the full 132 channels then.
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You can use the AS1130 with 4pin RGB LEDs too,
So how would you wire that up then?
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you'd have to only use one led from the RGB led, you might as well just by that single color if you wanted to use it with the AS1130
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someone was registered in the https://shop.austriamicrosystems.com/eng/Products/Lighting-Management/LED-Driver-ICs/AS1130 page?. to my I get this message.
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Phone: Invalide Phone/Fax number.
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I could not get these cheats (AS1130), so I have decided on the WS2803. and these SMD LED.
http://www.ebay.com/itm/10x-Worldsemi-WS2803SO-18-Channel-RGB-Constant-Current-LED-Driver-SOP-WS2803-PWM-/160701799688?pt=LH_DefaultDomain_0&hash=item256a92dd08

100 pcs New RGB PLCC-6 5050 3-CHIPS SMT SMD LED Light

I still need resistors? that value?
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its led smd.   http://www.ebay.com/itm/100-pcs-New-RGB-PLCC-6-5050-3-CHIPS-SMT-SMD-LED-Light-/170786097936?pt=LH_DefaultDomain_0&hash=item27c3a50b10
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I still need resistors?
No, a constant current drive means you non't need them.
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hi, my order arrived from Ebay. esperimentar's time. -_-.

I tell them that I decided on the 18-Channel RGB WS2803D. and rgb smd led 5050.
I connected the arduino exactly.I connected a single LED.



I loaded this library.
[url=https://github.com/adafruit/Adafruit-WS2801-Library]https://github.com/adafruit/Adafruit-WS2801-Library

and this example.
Code:
int dataPin  = 11;    // Yellow wire on Adafruit Pixels
int clockPin = 13;    // Green wire on Adafruit Pixels

// Don't forget to connect the ground wire to Arduino ground,
// and the +5V wire to a +5V supply

// Set the first variable to the NUMBER of pixels. 25 = 25 pixels in a row
Adafruit_WS2801 strip = Adafruit_WS2801(6, dataPin, clockPin);

// Optional: leave off pin numbers to use hardware SPI
// (pinout is then specific to each board and can't be changed)
//Adafruit_WS2801 strip = Adafruit_WS2801(25);

// For 36mm LED pixels: these pixels internally represent color in a
// different format.  Either of the above constructors can accept an
// optional extra parameter: WS2801_RGB is 'conventional' RGB order
// WS2801_GRB is the GRB order required by the 36mm pixels.  Other
// than this parameter, your code does not need to do anything different;
// the library will handle the format change.  Examples:
//Adafruit_WS2801 strip = Adafruit_WS2801(25, dataPin, clockPin, WS2801_GRB);
//Adafruit_WS2801 strip = Adafruit_WS2801(25, WS2801_GRB);

void setup() {
    
  strip.begin();

  // Update LED contents, to start they are all 'off'
  strip.show();
}


void loop() {
  // Some example procedures showing how to display to the pixels
  
  colorWipe(Color(255, 0, 0), 50);
  colorWipe(Color(0, 255, 0), 50);
  colorWipe(Color(0, 0, 255), 50);
  rainbow(20);
  rainbowCycle(20);
}

void rainbow(uint8_t wait) {
  int i, j;
  
  for (j=0; j < 256; j++) {     // 3 cycles of all 256 colors in the wheel
    for (i=0; i < strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel( (i + j) % 255));
    }  
    strip.show();   // write all the pixels out
    delay(wait);
  }
}

// Slightly different, this one makes the rainbow wheel equally distributed
// along the chain
void rainbowCycle(uint8_t wait) {
  int i, j;
  
  for (j=0; j < 256 * 5; j++) {     // 5 cycles of all 25 colors in the wheel
    for (i=0; i < strip.numPixels(); i++) {
      // tricky math! we use each pixel as a fraction of the full 96-color wheel
      // (thats the i / strip.numPixels() part)
      // Then add in j which makes the colors go around per pixel
      // the % 96 is to make the wheel cycle around
      strip.setPixelColor(i, Wheel( ((i * 256 / strip.numPixels()) + j) % 256) );
    }  
    strip.show();   // write all the pixels out
    delay(wait);
  }
}

// fill the dots one after the other with said color
// good for testing purposes
void colorWipe(uint32_t c, uint8_t wait) {
  int i;
  
  for (i=0; i < strip.numPixels(); i++) {
      strip.setPixelColor(i, c);
      strip.show();
      delay(wait);
  }
}

/* Helper functions */

// Create a 24 bit color value from R,G,B
uint32_t Color(byte r, byte g, byte b)
{
  uint32_t c;
  c = r;
  c <<= 8;
  c |= g;
  c <<= 8;
  c |= b;
  return c;
}

//Input a value 0 to 255 to get a color value.
//The colours are a transition r - g -b - back to r
uint32_t Wheel(byte WheelPos)
{
  if (WheelPos < 85) {
   return Color(WheelPos * 3, 255 - WheelPos * 3, 0);
  } else if (WheelPos < 170) {
   WheelPos -= 85;
   return Color(255 - WheelPos * 3, 0, WheelPos * 3);
  } else {
   WheelPos -= 170;
   return Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
}


... but the LED does not light.
any idea what's going on?
« Last Edit: October 02, 2012, 02:35:24 pm by Omnimusha » Logged

Manchester (England England)
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The chip will not work until you connect something to the REF input. See the data sheet for what resistor value you need.
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hi , Hi, I connected a resistor to pin IREF 1.25kOkm and the other extremity of the resistance to Gnd.

LED is not lit. What happens?

I have connected a single LED.
Is it necessary to run the chit, connect
missing leds in chit outs, to work?
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This would totally depend on the specific LED that you're using, however the last time I used 5050 SMD RGB LEDs, with a WS2803, one side of the LED went to VCC, while the other end went to the outputs on the WS2803.  Those outputs are SINK, not SOURCE.  Look at page 5 in the datasheet.  Your schematic seems to indicate that you're expecting them to SOURCE your LED.  Flip it around and make the proper connections.
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no, your suggestion does not work either.
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Sorry but you'll have to wait till I have time to rig up a WS2803 with some LEDs to figure out what's going on.  My first guess would be the code, but I'm not familiar with adafruit's code, so I don't know.  However, what I do know is that the standard WS2801 code won't work for the WS2803 because it has 6x more bits that needs to be sent.  But as I said, I don't know adafruit's code, so it's possible they're already accounting for that.  Also, try putting your LED's ground pins to outputs 0, 1, and 2 instead of starting at output 8.  The other side goes to VCC.  Make sure you're using the proper sides on the LED.
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