"Mixing" WS2811 pixels to use as null pixel

[toodle_pipsky]

Hi dudes, I have determined I need a null pixel on a set of pixicles, which are WS2811 running on 12v. Unfortunately I don't have any left over strings to harvest a pixel to create a null, but I do have a heap of spare pixels which are WS2811 running on 5v.


Is it possible to use one of these 5v pixels as a null pixel by running 5v to it, have the 12v bypass it, so just running the data through? If that makes sense!


Thanks.

 

[AAH]

All pixel data is 5V so that should be no problem. The problem will be getting 5V to power the 5V pixel.

 

[toodle_pipsky]

Awesome, thanks heaps for the info.

 

[lizardking]

if using a 5v pixel in a 12v string you will need to inject it with 5v power

 

[i13]

You can do this but you shouldn't connect the positive between the different voltage pixels. Only connect the negative and data.

It is always good to order a few more pixels than you need. You'll be in trouble if you have one pixel die.

 

[Skunberg]

Re: "Mixing" WS2811 pixels to use as null pixel

Couldn't you send 5v from the controller and inject 12v where they start?

 

[multicast]

5v1 zener diode will do the job to hook your 5V pixel ( null ) to a 12V supply..

 

[AAH]

A resistor and zener actually. It's too late at night for me to do the maths but you can't just put a zener diode in there to regulate the 12V down to 5.1V.

5v1 zener diode will do the job to hook your 5V pixel ( null ) to a 12V supply..