CLEARPATH Turtlebot4 - Page 120

Next, we populate the 6 LEDs in the leds array with whatever colours we want.
# LED 0
lightring_msg.leds[0].red = 255
lightring_msg.leds[0].blue = 0
lightring_msg.leds[0].green = 0
# LED 1
lightring_msg.leds[1].red = 0
lightring_msg.leds[1].blue = 255
lightring_msg.leds[1].green = 0
# LED 2
lightring_msg.leds[2].red = 0
lightring_msg.leds[2].blue = 0
lightring_msg.leds[2].green = 255
# LED 3
lightring_msg.leds[3].red = 255
lightring_msg.leds[3].blue = 255
lightring_msg.leds[3].green = 0
# LED 4
lightring_msg.leds[4].red = 255
lightring_msg.leds[4].blue = 0
lightring_msg.leds[4].green = 255
# LED 5
lightring_msg.leds[5].red = 0
lightring_msg.leds[5].blue = 255
lightring_msg.leds[5].green = 255
Tip
Each RGB value can be set between 0 and 255. You can look up the RGB value of any color
and set it here.