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If I bought some WS2811B led strips (300). if I ran them across a room is it possible to make the first 150 LEDs or so stay on, and the last 150 off?

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  • \$\begingroup\$ What do you think "addressable" means? \$\endgroup\$ – Marcus Müller Oct 5 at 20:16
  • \$\begingroup\$ you are asking if you can set half of the LED strip to a different color from the other half ... that should be obvious if you know how an addressable LED strip operates \$\endgroup\$ – jsotola Oct 5 at 21:13
  • \$\begingroup\$ Not sure why this was upvoted... VTC as user/consumer question. Maybe on Arduino.SE it would be on topic. \$\endgroup\$ – Wesley Lee Oct 5 at 23:19
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If you have the two strings of 150 LEDs you would be controlling them individually so the choice of which set is on or off is obvious.

If the string of all 300 LEDs is all in one string then your control system needs to deal with sending out the serial command strings for the 300 daisy chained LEDs. In this data stream you would set the off state controls for those LEDs that you want off and those that you want to have ON. It could be any mix that you want and would not be limited to the first or last 150 in the string.

This level of control does imply that you have a microcontroller based control system that you program to achieve the on/off/color pattern that you want for each of the 300 LEDs.

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  • \$\begingroup\$ Thank you I wanted to know before I went out and bought them. I've just never seen half on and half off at the same time, so I wanted to ask. \$\endgroup\$ – DragonJT Oct 6 at 21:38
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WS2811b allows full control (on/off/brighness) of each LED individually and there is no physial limit to the number of LEDs, so yes with the right commands you can light each end of the strip differently.

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