[solved] How to configure these simple single, oldskool RGB LEDs?

You are quick on the ball! :person_bowing:

The code for a Lolin D1 mini (esp8266)

output:
  - platform: esp8266_pwm
    pin: GPIO12
    id: gpio_12
  - platform: esp8266_pwm
    pin: GPIO13
    id: gpio_13
  - platform: esp8266_pwm
    pin: GPIO15
    id: gpio_15

light:
  - platform: rgb
    name: "LED"
    id: rgb_led
    red: gpio_12
    green: gpio_13
    blue: gpio_15  

What does that mean 'software pwm'?