After completing Install and configure the Thonny, you can try programming immediately.
Create a new main.py script file and enter the following code in it:
from machine import Pin
from neopixel import NeoPixel
import time
pin_48 = Pin(48)
np = NeoPixel(pin_48, 1, bpp=3, timing=1)
while True:
np[0] = (25,25,25)
np. write()
time. sleep_ms(250)
np[0] = (0,0,0)
np. write()
time. sleep_ms(250)Save the file to the MicroPython device, click the "Run" button to make the onboard colored LED flash.
Modify the data in the tuple on the right side of np[0] = (25,25,25) to change the color, which corresponds to the brightness levels of R, G, and B respectively. The setting range is 0-255, and the recommended range is 0-25. When the brightness is too high, please do not look directly at it for a long time!