How to make LED chase/running effect?

ESPHome
1

Hi everyone, I need help creating a led chase effect with 4 lights that runs without stopping, can you guys help with the yaml for that, each LED should use it’s own pin.

Something like this bellow…

t725
t725725×453 65.3 KB

2

Did you get one LED hooked up and switchable?

I would have thought you would just do that 4 times.

Then maybe set up another switch with say a repeat
or while action, with delays that cycle through the LEDs.

1 Like
3

Hi Mahko, my problem isn’t really creating the the effect, it is how to make it repeat infinitely.

4

You can use the interval: component to achieve infinitely

light:
  - platform: binary
    output: led_1_o
    id: led_1
  - platform: binary
    output: led_2_o
    id: led_2
  - platform: binary
    output: led_3_o
    id: led_3
  - platform: binary
    output: led_4_o
    id: led_4

output:
  - id: led_1_o
    platform: gpio
    pin: GPIO16
  - id: led_2_o
    platform: gpio
    pin: GPIO17
  - id: led_3_o
    platform: gpio
    pin: GPIO18
  - id: led_4_o
    platform: gpio
    pin: GPIO19


interval:
  - interval: 200ms
    then:
      - lambda: !lambda |-
          static int led_nr=1;
          
          switch (led_nr) {
            case 1:
            { 
              auto call = id(led_1).turn_on();
              call.perform();
              call = id(led_4).turn_off();
              call.perform();
              break;
            }

            case 2:
            { 
              auto call = id(led_2).turn_on();
              call.perform();
              call = id(led_1).turn_off();
              call.perform();
              break;
            }

            case 3:
            { 
              auto call = id(led_3).turn_on();
              call.perform();
              call = id(led_2).turn_off();
              call.perform();
              break;
            }

            case 4:
            { 
              auto call = id(led_4).turn_on();
              call.perform();
              call = id(led_3).turn_off();
              call.perform();
              break;
            }

            default:
              break;
          }

          led_nr += 1;
          if (led_nr == 5) {
              led_nr = 1;
          }
2 Likes
5

Thank you that helped a lot, I am using this to make a stepper run without stopping,
Do you know how to achieve the same effect but using the stepper component?

6

No, I never used that component. As far as I know that component is used to control a stepper motor DRIVER and not different output pins.