Adressable LEDs flickering on low brightness

ESPHome
1

Hi
I think I’m going insane. I want to have a static light with my WS2801 where only the last section of the strip is on. Since I use it as a Night light, I want to use it in the lowest possible settings where a warm white light is still possible. That seemed to worked with a Lambda effect, but it is constantly flickering. I even set the code up so that it only set the LEDs when initializing, but it’s still flickering. I checked with a logic analyser and the values are in fact toggeling between values, sending a 0x04 and after the time defined in “update_interval” it’s 0x05, which is a very noticable difference. Has anyone experienced that as well?

Here’s my code:

light:
  - platform: fastled_spi
    chipset: WS2801
    data_pin: GPIO23
    clock_pin: GPIO18
    num_leds: 78
    rgb_order: RGB
    data_rate: 1MHz
    name: "FastLED SPI Light"
    id: LED_Strip
    effects:
      - addressable_lambda:
          name: "Night Light"
          update_interval: 100ms
          lambda: |-
            if (initial_run) {
              for (int i = it.size() - 1; i > 0; i--) {
                if((i>=56)){
                  it[i] = Color(60, 60, 40);
                }
                else{
                  it[i] = Color(0, 0, 0);
                }
              }
            }

I also find it mysterious that the color value is not the one sent by the ESP, is there a way where I could set the value sent by the SPI bus myself, or is it always abstracted?

Thanks in advance for the help!

2

Doesn’t address your root issue, but I’d highly recommend using WLED over ESPHome for lighting. While I use LEDs in a number of my ESPHome projects where the lighting is a minor part of things, at best it still just works ‘okay’.

3

Thanks for the reply. I use WLED for other projects and it works quite nice, but I will be using some sensors in the future, that work at the same time, so it would be nice to have a solution with ESPHome. But it might be a solution for the mean time.