Steelers95 Posted January 6, 2015 Posted January 6, 2015 I am working on a plan to put pixels on my house next year. After taking many measurements today I have a few questions. I'm working with ws2811 pixels and a sandevice e682 controller and In order to get the pixels to fit the house correctly I will need to use strings of 55 pixels instead of 50. 1) will I need to use power injection if I have a pixel string of 55 pixels that is between 15-16 ft. away from the controller2) is it possible even with power injection to have a string of 55 pixels that is 25 ft. away from the controller3) I have been reading up on how to inject power into a string of pixels. if im correct I can use a different power supply than the one that is powering the controller and I can run wire from the v+ and V- on that power supply directly to the 12v and ground on the pixel string. while only running the data and ground wires from the controller, not the 12v. is that a correct way of injecting power or am I 100 percent wrong. Thank you for any help or advice you may have.
KStatefan Posted January 6, 2015 Posted January 6, 2015 1. No2. you might need null pixels3. You can run multiple power supplies. Data goes straight thru, V+ isolate, V- tie all together.
KStatefan Posted January 7, 2015 Posted January 7, 2015 Power injection question comes up quite often and I know I do not describe it very good so I drew this up this morning while I was waiting for a meeting to start.
Ron Boyd Posted January 7, 2015 Posted January 7, 2015 I may be wrong, but I was told if using multiple power supplies on the same run of pixels, the V- should be tied together on all of the PS's. So which way is it? Is your drawing correct or do the PS's need to be tied together? I may need to do this this year is the reason I'm asking. I don't think they need to be tied if using multiple PS's on different strings, which is the way I did it this year and had no problems. Any electrical gurus that can chime in on this?
Steelers95 Posted January 7, 2015 Author Posted January 7, 2015 Thanks for taking the time to make a drawing, helps out a lot .
KStatefan Posted January 7, 2015 Posted January 7, 2015 (edited) Thanks for taking the time to make a drawing, helps out a lot . Your Welcome. It did not take very long but there are many different options on how to apply this to draw them all. I tried to be as generic as possible. Edited January 7, 2015 by KStatefan
plasmadrive Posted January 7, 2015 Posted January 7, 2015 I may be wrong, but I was told if using multiple power supplies on the same run of pixels, the V- should be tied together on all of the PS's. So which way is it? Is your drawing correct or do the PS's need to be tied together? I may need to do this this year is the reason I'm asking.I don't think they need to be tied if using multiple PS's on different strings, which is the way I did it this year and had no problems.Any electrical gurus that can chime in on this?It is true, they are tied together in the drawing.
Ron Boyd Posted January 7, 2015 Posted January 7, 2015 OK guys, thanks for helping my understanding too. I was told different and that's the only reason I questioned it. I just wanted to know I had it right before I do this. It may be as soon as 2015 and I may not have to do it at all. Thanks for the info.
Cdanna77 Posted January 7, 2015 Posted January 7, 2015 (edited) Great drawing. I'm going to be doing this for this year. And was wondering how to go about it. Thanks. Edited January 7, 2015 by Cdanna77
saxon Posted January 7, 2015 Posted January 7, 2015 I thought your first explanation was good! Great drawing, steelers-I have a 23' run from sandevice to controller with no problems.correction - sandevice to first pixel
saxon Posted January 7, 2015 Posted January 7, 2015 3 core LED pixel wire I got from china (ray wu I think). It is like 20 gauge, maybe smaller. I can send you a link later if you want. ~Matt
Max-Paul Posted January 8, 2015 Posted January 8, 2015 I would hope not smaller. Oh maybe your confused and mean a lower Gauge number which is a larger dia wire.
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