Adding code for media controller

Adding code for media controller project using a qt py and stemma rotary encoder to send media consumer control messages

QT_Py_Media_Controller/code.py

@@ -0,0 +1,50 @@
+# SPDX-FileCopyrightText: 2024 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import board
+import usb_hid
+import neopixel
+from rainbowio import colorwheel
+from adafruit_debouncer import Button
+from adafruit_seesaw import seesaw, rotaryio, digitalio
+from adafruit_hid.consumer_control import ConsumerControl
+from adafruit_hid.consumer_control_code import ConsumerControlCode
+
+cc = ConsumerControl(usb_hid.devices)
+
+pixel_pin = board.A1
+num_pixels = 20
+pixels = neopixel.NeoPixel(pixel_pin, num_pixels,
+                           brightness=1, auto_write=True)
+hue = 0
+pixels.fill(colorwheel(hue))
+
+i2c = board.STEMMA_I2C()
+seesaw = seesaw.Seesaw(i2c, 0x36)
+seesaw.pin_mode(24, seesaw.INPUT_PULLUP)
+ss_pin = digitalio.DigitalIO(seesaw, 24)
+button = Button(ss_pin, long_duration_ms=1000)
+
+encoder = rotaryio.IncrementalEncoder(seesaw)
+last_position = 0
+
+while True:
+    position = -encoder.position
+    button.update()
+    if position != last_position:
+        if position > last_position:
+            cc.send(ConsumerControlCode.VOLUME_DECREMENT)
+            hue = hue - 7
+            if hue <= 0:
+                hue = hue + 256
+        else:
+            cc.send(ConsumerControlCode.VOLUME_INCREMENT)
+            hue = hue + 7
+            if hue >= 256:
+                hue = hue - 256
+        pixels.fill(colorwheel(hue))
+        last_position = position
+    if button.short_count:
+        # print("Button pressed")
+        cc.send(ConsumerControlCode.PLAY_PAUSE)