PL9823 individually addressable through hole RGB leds

• PL9823 individually addressable through hole RGB leds
  Posted by FrankT on 05 Feb, 2015 05:51
• Has anyone had any experience with these.
  
  Available in many places.  Here's one from ebay...
  
  http://www.ebay.com/itm/10-1000PCS-PL9823-5mm-8mm-Round-RGB-LED-P9823-chipset-inside-Full-color-Frosted-/261654480104
  
  There's little information about how to power them.  The "datasheet" image on the ebay site seems to show a current limiting resistor on each LED, but says no external components.

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• #1 Reply
  Posted by zhihao50 on 05 Feb, 2015 06:40
• seems to be very similar to neopixel from Adafruit. http://www.adafruit.com/products/1734
  
  Their neopixel lib for Arduino should work fine with those.
• #2 Reply
  Posted by RJFreeman on 05 Feb, 2015 06:51
• As far as I can tell (and for $30 a 100 I think I might buy some to play with) they are claimed to be similar to the WS2811 (except with red and green swapped according to http://surrealitylabs.com/2014/08/playing-with-the-pl9823-f5-a-breadboardable-neopixel-compatible-led/ )
  
  the WS2811 recommends a series resistor bypass capacitor because "We require, in order to prevent power spikes phenomenon and power reverse polarity, series a not more than 100ohm resistor at the po-wer supply pin(VDD). The capacitance 104 as bypass capacitor." which reading between the lines and based on a few comments elsewhere on the web means these things can generate a bit of noise on the power supply so a series R and a parallel cap is advised to suppress this noise.
  https://www.adafruit.com/datasheets/WS2811.pdf