LED Strip flickers randomly with light effects

deCodeIt commented 1 month ago

The problem

WS212B_Flicker

https://github.com/user-attachments/assets/5b75c7c8-2423-495d-81ae-bcc3b3bf1d44

When using a Neopixel WS2812B strip with Raspberry pi pico w running Esphome, the led strip flickers intermittently. I'm not sure what's the root cause of the issue. I tried using a different frequency (8MHz) but it didn't work either.

Is this a common issue? I also tried with a different strip and faced same issue. I used another pico w running micropython and verified that the strip works fine with it so not sure what's wrong with using via esphome.

Which version of ESPHome has the issue?

2024.7.1

What type of installation are you using?

Home Assistant Add-on

Which version of Home Assistant has the issue?

2024.7.3

What platform are you using?

RP2040

Board

pico w

Component causing the issue

rp2040_pio_led_strip

Example YAML snippet

light:
  - platform: rp2040_pio_led_strip
    name: "Neopixel Strip"
    id: led_strip
    pin: GPIO21
    num_leds: 60
    pio: 0
    rgb_order: GRB
    chipset: WS2812B
    effects:
      - pulse:
      - pulse:
          name: "Fast Pulse"
          transition_length: 0.5s
          update_interval: 0.5s
          min_brightness: 0%
          max_brightness: 100%
      # Use default parameters:
      - random:
      # Customize parameters
      - random:
          name: "My Slow Random Effect"
          transition_length: 30s
          update_interval: 30s
      - random:
          name: "My Fast Random Effect"
          transition_length: 4s
          update_interval: 5s
      - strobe:
      - strobe:
          name: Strobe Effect With Custom Values
          colors:
            - state: true
              brightness: 100%
              red: 100%
              green: 90%
              blue: 0%
              duration: 500ms
            - state: false
              duration: 250ms
            - state: true
              brightness: 100%
              red: 0%
              green: 100%
              blue: 0%
              duration: 500ms
      - addressable_rainbow:
      - addressable_rainbow:
          name: Rainbow Effect With Custom Values
          speed: 10
          width: 50

Anything in the logs that might be useful for us?

There's no error message in the logs.

Additional information

No response

deCodeIt commented 1 month ago

Tagging @jesserockz @Papa-DMan

Kummallinen commented 3 weeks ago

I've noticed the same issue/a similar since a recent ESPHome update. The LEDs flicker random colours when changing either the colour or brightness but do end up the correct colour. It did used to work without issue

zencow commented 3 weeks ago

I was lucky enough to have a previous UF2 image for one of my Pico's. An update a few months back had someone's "fix" for flickering, and basically made my neopixels non-functional on the Pico (sometimes the first of 8 leds works, but usually none are lighting as expected). Maybe their changes worked for them, but not for the rest of us.

esphome / issues