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Maker_Pico_Box/3buttons.py

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+import machine
+import time
+import neopixel
+
+# NeoPixel setup
+NUM_LEDS = 3
+np = neopixel.NeoPixel(machine.Pin(17), NUM_LEDS)
+
+# Buttons
+button_pins = [20, 21, 22]
+buttons = [machine.Pin(pin, machine.Pin.IN, machine.Pin.PULL_UP) for pin in button_pins]
+
+# Colors to cycle through
+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
+    (255, 255, 255) # White
+]
+
+# Individual color indexes for each pixel
+indexes = [0, 0, 0]
+last_state = [1, 1, 1]  # buttons start unpressed
+
+def show_pixels():
+    for i in range(NUM_LEDS):
+        np[i] = colors[indexes[i]]
+    np.write()
+
+# Initial display
+show_pixels()
+
+while True:
+    for i in range(3):
+        state = buttons[i].value()
+
+        # Detect press (1 → 0)
+        if last_state[i] == 1 and state == 0:
+            indexes[i] = (indexes[i] + 1) % len(colors)
+            show_pixels()
+            time.sleep_ms(200)  # debounce
+            
+        last_state[i] = state
+
+    time.sleep_ms(10)