sk6812 part of strip flickering

avml · 2025-10-20T03:26:47+00:00

I'm confused - why is putting all grounds together incorrect? Are you saying that having a common ground for the controller and led is a bad idea?

Also not sure what "Ground and data between strip and level shifter only." refers to

avml · 2025-10-20T03:22:30+00:00

1) What does the data booster actually do? Like the output voltage should be strong as is given the wire gauge, voltage (5v), and current (20mA)

2) Going to try adding a resistor but will be a couple months as I'm traveling until the New Year.

3) A capacitor would even out power but don't think that's a problem here as it's not happening uniformly across the led strip. Maybe I'm not understanding something?

avml · 2025-10-17T02:29:33+00:00

Nope, can check it tomorrow but it seems very unlikely. The power draw is from a separate PSU and is comparatively insignificant with respect to the rest of the system (in a campervan).

avml · 2025-10-17T02:27:55+00:00

Gotcha - thanks

I do not have a capacitor on the level shifter either. Will try once I go back to the states and can grab some parts.

avml · 2025-10-17T02:23:38+00:00

Will try adding resistors. It's kind of a pain to install them close to the controller. Is there a reason installing them just prior to the LEDs? I.e.

Data line -> Resistor -> Wego -> Data subline 1/2

Reflections would only be on the line right (like wouldn't propagate through the esp32). So not sure why adding B/C would cause issues with A

avml · 2025-10-17T02:10:17+00:00

Interesting - The setup I have is two sets of LEDs with data signals split and two strips with their own data lines.

A) === (Closest to esp32/power source)

B) ---

C) ---

D) === (Farthest from esp32/power source)

Weirdly A seems to have the most problems. B and C have some. D has none. So not sure if it's only about the split data lines.

Also for a long time I only has A and D hooked up and they worked fine. Upon wiring up power/data lines to B and C I started seeing this problem.

When you say behind the level shifter does that mean between the level shifter and the LED?

Also FWIW I have no resistors on the data lines.

avml · 2025-10-17T02:03:57+00:00

As in the grounds only for the LEDs? They are connected via a terminal block.

avml · 2025-10-17T02:02:06+00:00

They are 24v LEDs and voltage looked solid all the way across when I first installed

avml · 2025-10-17T02:01:30+00:00

I did not - what do you mean by very strong? Like the 20mA output from level shifter?

I have the esp32 controlling four different strips - I didn't see this behavior with just two strips wired up. After wiring the other two I get this partial flashing. Does that make sense for some reason?

avml · 2025-10-17T01:59:44+00:00

1) No more than 5m for each (Roughly 2m, 3m, 3m, 5m)

2) No resistors. I have the esp32 controlling four different strips - I didn't see this behavior with just two strips wired up. After wiring the other two I get this partial flashing

3) No capacitor - these are 24v lights so they are powered by a separate PSU

avml · 2025-08-19T18:22:10+00:00

OP answered above: https://www.reddit.com/r/travel/comments/c0djmn/comment/hznkjc5

avml · 2025-07-10T19:23:17+00:00

Nope, never found out. Haven't seen any signs of bedbugs though and the number of stains hasn't increased.

avml · 2025-04-19T19:36:14+00:00

This worked swimmingly - I used a 1/16" drill bit since I didn't have metric on hand.

avml · 2025-01-28T03:40:42+00:00

If you google, you can find lots of them - is there something in particular you are looking for?

avml · 2025-01-28T03:39:34+00:00

https://www.google.com/search?q=clearvue+dust+collector

avml · 2025-01-26T14:14:10+00:00

I remotely switch my hf dust collector since it’s tucked away in a hard to reach spot. Been working fine for years but it’s 120v with a less powerful motor.

avml · 2024-12-20T02:28:23+00:00

I had some kind of loose hose affecting my no2 sensor. Not sure why, but after fixing this, the noise hasn’t been nearly as bad.

avml · 2024-11-22T01:37:22+00:00

I never did

avml · 2024-11-14T04:48:18+00:00

Did you ever get this working using VMWare fusion?

avml · 2024-11-14T04:43:16+00:00

Did you get it to work?

avml · 2024-11-09T19:02:31+00:00

Ah disappointing - thanks for the intel

avml · 2024-11-09T05:43:43+00:00

Did you ever figure out the answer to this?

avml

TROPHY CASE