ESP32 Forum

Hello!
I am having an issue with the ESP32-PoE-ISO by Olimex and 6 strips of 420 WS2815 addressable LEDs.

Background
I have these strips hooked up to a 12v 50amp power supply and they are connected to pins 2,3,32,33,14,15. I am using the FastLED library to control them and the esp32 is running off of PoE. it is grounded straight to each strip.

Problem
The issue I am having is flickering of strips, and when pin 2 or/and 4 are connected plus any other pin, pins 2 and 4 go crazy (flashing random colors, etc.) but when just 2 or/and 4 are connected I usually get mostly good results with just some flickering.

Things I've tried...

I have tried several several things now...

1. I've added the lines "#FASTLED_ALLOW_INTERRUPTS 0" and "#FASTLED_INTERRUPT_RETRY_COUNT 0"

• Completely removing all Ethernet code

• Updating each strip separately

• Logic Level Conversion

• With and Without capacitor on power line and resistor on data line

*EDIT* there was a weird glitch where it deleted the ending of my post. I editted it and will be re-uploading the code.

Did you add a 1000uF electrolytic capacitor to each strip? If not, try it. Often this helps with WS2812B, so it may help with these strips too.

Are you doing any level conversion between the ESP32 and the WS2815? The ESP32 is 3.3V while (according to what I read) the WS2815 expects 5V logic levels.

ESP_Sprite wrote: ↑

Wed Sep 16, 2020 10:44 am

Are you doing any level conversion between the ESP32 and the WS2815? The ESP32 is 3.3V while (according to what I read) the WS2815 expects 5V logic levels.

Yep, tried a few different sizes too. I've used the WS2812B strips in several other applications with no issues. I thought the WS2815's would be the same.. but they sure aren't acting like it!