# 1 led = 3 led?

**URL:** <https://wled.discourse.group/t/1-led-3-led/8224>\
**Category:** Uncategorized\
**Created:** [May 6, 2023, 5:56am UTC](https://wled.discourse.group/t/1-led-3-led/8224 "2023-05-06T05:56:59Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![smartnotify1070](https://yyz2.discourse-cdn.com/free1/user_avatar/wled.discourse.group/smartnotify1070/32/5010_2.png) [@smartnotify1070](https://wled.discourse.group/u/smartnotify1070)\
**Post date:** [May 6, 2023, 5:57am UTC](https://wled.discourse.group/t/1-led-3-led/8224/1 "2023-05-06T05:57:00Z")

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I have a weird anomaly with a WS 2811 12 v strip. I have a strip with 100 LEDs. For every one LED I add under Led Preference it lights up 3 on the strip.  
eg

- So if my LED preferences say 3 under Length, 9 LEDs light up.
- If I 10 in length, 30 will light up.

Is that normal?

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**Author:** ![pille](https://yyz2.discourse-cdn.com/free1/user_avatar/wled.discourse.group/pille/32/100_2.png) [@pille](https://wled.discourse.group/u/pille)\
**Post date:** [May 6, 2023, 9:33am UTC](https://wled.discourse.group/t/1-led-3-led/8224/2 "2023-05-06T09:33:00Z")

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WS2811 has one IC that controls 3 LED, thus you can only address groups of 3 LED.

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**Author:** ![divsys](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@divsys](https://wled.discourse.group/u/divsys)\
**Post date:** [May 6, 2023, 3:46pm UTC](https://wled.discourse.group/t/1-led-3-led/8224/3 "2023-05-06T15:46:03Z")

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That’s a side effect of that particular 12V strip. They combine 3 LEDs in series to get closer to 12V.  
Other strings use a different controller and/or onboard regulator for each LED.

You’ll have to research what you’re buying to know for sure.