RaspberryPiPico2

import machine
import neopixel
import time

# Configuration
DATAPIN = 25      # GPIO pin connected to DI
                  # change to whatever pin you wish that supports PWM,
                  # GPIO25 is the default LED pin on the Pico 2 and our clone uses it
                  # GPIO22 is used for "hacked" Pico 2 prototype demo on solderless breadboard
                  
NUMPIXELS = 16    # Number of LEDs in ZSRGB-2017H-08-Z3 strip
LED_ORDER = 3     # RGB

# Initialize
np = neopixel.NeoPixel(machine.Pin(DATAPIN), NUMPIXELS, bpp=LED_ORDER)

# Set Colors (note 255 is 100% brightness and will blind you and draw a LOT of current, so use smaller numbers!)
np[0] = (32, 0, 0)
np[1] = (0, 32, 0)
np[2] = (0, 0, 32)
np[3] = (32, 32, 0)
np[4] = (32, 0, 32)
np[5] = (0, 32, 32)
np[6] = (32, 32, 32)

# scroll the pixels each frame

while True:
    
    # save the first color
    tempColor = np[0]
    
    # shift the rest
    for i in range(NUMPIXELS-1):
        np[i] = np[i+1]    
    
    # write the saved color to the end
    np[NUMPIXELS-1] = tempColor
    
    # write the pixels
    np.write()
    
    # wait a moment
    time.sleep( 0.1 )