Doing research for first PCB design with RP2040 microcontroller. I have found a minimal design that I will use as a reference. I have also found a datasheet for the RP2040 microcontroller.

BAPC_Board/prototyping/src/main.py

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+import machine
+import neopixel
+import time
+
+def wheel(pos):
+    """Generate a color wheel value."""
+    if pos < 85:
+        return (pos * 3, 255 - pos * 3, 0)
+    elif pos < 170:
+        pos -= 85
+        return (255 - pos * 3, 0, pos * 3)
+    else:
+        pos -= 170
+        return (0, pos * 3, 255 - pos * 3)
+    
+led_pin = machine.Pin(3, machine.Pin.IN)
+
+def read_led_data():
+    """Read the data from the LED strip."""
+    led_data = []
+    for i in range(num_leds):
+        led_data.append(np[i])
+    return led_data
+
+def smooth_rainbow(np, num_leds, delay=0.1):
+    """Display a smooth rainbow on the LED strip."""
+    for i in range(256):
+        for j in range(num_leds):
+            np[j] = wheel((i+j) & 255)
+        np.write()
+        print(read_led_data())
+        time.sleep(delay)
+
+# Configure the pin for the LED strip
+pin = machine.Pin(10)
+num_leds = 1  # Number of LEDs in the strip
+
+# Create a neopixel object
+np = neopixel.NeoPixel(pin, num_leds)
+
+# Define the colors
+colors = [
+    (255, 0, 0),   # Red
+    (0, 255, 0),   # Green
+    (0, 0, 255),   # Blue
+    (255, 255, 0), # Yellow
+    (255, 0, 255), # Magenta
+    (0, 255, 255)  # Cyan
+]
+
+# Flash all colors
+while True:
+    for color in colors:
+        np[0] = color
+        np.write()
+        time.sleep(0.5)
+        print(read_led_data())
+    
+    # Display a smooth rainbow
+    smooth_rainbow(np, num_leds)