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Ws2812 LED pixels at 12v

Tue Nov 07, 2017 9:28 pm

I’ve done a load of projects using led strips with ws 2812 5V pixels and the raspberry pi neopixrl library as detailed in the fine tutorial by Adafruit

https://learn.adafruit.com/neopixels-on ... i?view=all

This used a level shifter to shift the pi 3.3v pwm signal up to 5V that the led strip is happy with. It also used a suitably high current 5V power supply for the leds

I’d like to use a 12v strip for another project for a variety of reasons and have found a suitable candidate on eBay

https://m.ebay.com/itm/WS2812B-WS2812-I ... 2871062060

I’ve got a suitable 12v power supply but am a bit lost on the signal line. Do I use the same as the 5V strip or should I shift up to 12v using another level shifter??

Also, is there an advantage if using a higher voltage signal line esp chalky as the strip I went to use is about 8m long?

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rpdom
Posts: 11788
Joined: Sun May 06, 2012 5:17 am
Location: Essex, UK

Re: Ws2812 LED pixels at 12v

Tue Nov 07, 2017 9:45 pm

I've used 12v and 5v WS2813 LED strips with the data line driven directly from the 3.3V GPIO. The data input is not directly related to the supply voltage.

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