Two runs of lights, same esp32 controller, different color

1

I have two sets of 14 WS218x lights split from one esp32 controller. The runs are close together in the front of my house. I cannot understand why the colors (especially whites) don’t match. One has a slightly greenish hue and the other one slightly reddish. I was careful to have the same gauge wire going to each side. Any ideas out there?

2

if those are from different manufacturing batches, color differences are normal. if they are from the same one: measure voltages.

3

Thanks for your reply. They are the same Govee outdoor permanent lights and I am using their power source (which I think is 36 volt) and an ESP32 controller. It’s confounding because I don’t know how they could have different voltages connected to the same 3 terminals. Damnation!!

4

What happens if you put both sets in series from one GPIO rather than 2?

5

The two runs are parallel, with the power source and controller in the middle. It creates nice effects running in one direction over the garage and the other direction for the porch. I like that. They are Govee permanent outdoor lights. I’m thinking it is just a limitation of the lights since I didn’t buy the Pros. They are RGB (not RGBW) and they just can’t produce white without a halo of some color. The problem is that they have different colors. It’s very frustrating.

6

@HMedina79 what happens if you swap the pin
does the Redish go also to the other side
so is it on the controller or the stripe

7

If you’re feeding both sets from a single GPIO (you split the data line to 2 strings), Try driving the 2 strings from 2 different GPIOs.

You can always make them display the same things via the WLED software if you want, but it lets you test the strings independently and see if it’s a manufacturing or wiring issue.

8

Hmmm, but under LED preferences, I will have to pick one GPIO. How can I pick two GPIO’s and make them display the same thing?

9

In LED Preferences, click on the “+” lower on that screen.
That will add a new string to WLED with it’s a new GPIO.

You set the length of each string to what’s connected to each GPIO.
WLED will combine them into 1 long string.
You can create segments to address each string seperately.
You can make them display the same things by using grouping with those segments.

10

I will give that a try. Thanks for your help!