Not sure if this is the best place to ask for help, but I’m going insane and not sure where to find the answer. I’m running WLED on a NodeMCU using the latest update. 100 LED’s that are 12v ws2811. I have sacrificed a led to send the signal over a data cable about 2m. The last section is flickering …

Are you skipping the first LED? How thick is the power wire to the end and how far is it?

Hi. Yeah first led skipped. The cable is max 2m the cable is standard 12v speaker cable 24 strand.

You need logic level shifter. https://github.com/Aircoookie/WLED/wiki https://github.com/Aircoookie/WLED/wiki/Compatible-hardware

The 2811 chips have a VDD of around 5V (even if the LED’s are driven at 12V, see the example voltage divider circuit in the datasheet: https://cdn-shop.adafruit.com/datasheets/WS2811.pdf ). The data signal should be close to VDD, if you’re driving it straight from an ESP8266 that’s 3.3V which somet…

Thank you. There’s a lot of information that will take me some time to get my head around.

[image] Spangles: The last section is flickering a random colour. I have tried adding power both ends but this makes no difference. Flickering at the end is not The lack of a logic shifter it is lack of power. Many factors go in to injecting power. Step one is measure the voltage at the en…

You can always try this mod from my other post. Works for me and easy to construct if your not that technically minded. See the pic in post 8. [image] WS2811 leds suddenly start flashing Hardware Please don’t think TLDR on this. Thank you. I’m having a very similar prob…

Thank you for all the information. The power coming out of the end of the string is 11.7v I will tonight check all the other ideas you have suggested. Thank you

I would definitely use a logic level shift with the output gpio for a stable 5v . Also be certain to always run Data and Gnd from the controller (NodeMCU) to your pixels . The Gnd is referenced from the controller by the Data .

Flickering Noobie

Issues

Modelman November 29, 2020, 10:00pm 8

You can always try this mod from my other post. Works for me and easy to construct if your not that technically minded. See the pic in post 8.

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Flickering Noobie

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