WorldSemi has a new chipset:

Archive FastLED Archive
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WorldSemi has a new chipset: WS2821

http://www.world-semi.com/uploads/soft/140305/1-140305102109.pdf

  • Signal adopts the single line parallel connection type,any pixels’ failure won’t effect other pixel’s
    display effect.
  • Signal can compatible and expand the DMX512(1990) protocol signal.
  • Data transmission speed is 250Kbps~750Kbps.
  • The built-in voltage regulator chip, 5V above 24V power supply only series resistance to IC VDD feet, without additional voltage regulator tube.
  • WS2821 IC has VR-tube(voltage-regulator tube) built-in,for higher than 5V,lower than 24V’s power supply,only require one resistor being series
    connected to the IC’s VDD pin,no need to add the VR-tube outside.
  • Output voltage can bear 24V
  • R/G/B out three channels’ output,each output driven channel has PWM circuit to control the gray,256 gray is adjustable
  • R/G/B output default current 19mA,maximum 60mA.

So, built in v-reg is nice, although having just bought 50 dc:dc converters :frowning: sucks to be me!

Speed looks to be on a par with WS2811/WS2812.

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Just confirmed with WorldSemi - Yes, they speak SPI and DMX (1990) and can accept voltages up to 24V.

Sorts out any problem I may have had with auto voltages…

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“voltage-regulator tube”?!

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Translation isn’t their strongest trait …

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I need a translation to English from autotranslated-Chinese-to-English.

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I can barely spek Ingirsh and I are one.

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Wow, they’ve managed a transmission rate that makes the ws2812s look downright speedy!

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I did raise that question with them - they said the speed was the same - it is essentially the same chip with added DMX capabilities and higher voltage support.

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Yeah - and the 2812 speed is pretty damn shitty, and the moment someone gets a 10-20mbps rate 5050 w/embedded controller, I’m going to drop using 2812s for personal projects like and emflamed potato.

Here’s a hint, they’re coming.

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The issue I have is weight - 4 wire weighs more than 3-wire. Not that bothered about speed - the 1kHz I get from WS28* is more than enough.

That being said, I have had my appreciation of the variety of LEDs expanded greatly on here and if I could find an appropriate controller/LED/speed combination, I would definitely give it a try.

Something with 10MB/s and 240V would do nicely :wink:

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Start doing stuff with hundreds, if not thousands of LEDs, and wanting to maintain 30+ fps, and let’s see if you still don’t care about speed :slight_smile:

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If I could afford thousands of LEDs, I’m sure I would appreciate the problem… on a fixed income, I’m lucky to scratch together the $11 for a 30-led string :wink: