code for AS5600 encoder project

CircuitPython code to control CC volume with a magnet and AS5600 sensor

AS5600_Magnetic_Encoder/code.py

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+# SPDX-FileCopyrightText: Copyright (c) 2025 Liz Clark for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+"""AS5600 Encoder"""
+import usb_hid
+import board
+from adafruit_hid.consumer_control import ConsumerControl
+from adafruit_hid.consumer_control_code import ConsumerControlCode
+import adafruit_as5600
+
+i2c = board.STEMMA_I2C()
+sensor = adafruit_as5600.AS5600(i2c)
+enc_inc = ConsumerControlCode.VOLUME_INCREMENT
+enc_dec = ConsumerControlCode.VOLUME_DECREMENT
+cc = ConsumerControl(usb_hid.devices)
+
+last_val = sensor.angle
+
+THRESHOLD = sensor.max_angle // 2 # default max_angle is 4095
+# you can change the max_angle. ex: sensor.max_angle = 1000
+
+MIN_CHANGE = 25  # minimum change to register as movement
+# increase to make less sensitive, decrease to make more sensitive
+
+while True:
+    enc_val = sensor.angle
+    if abs(enc_val - last_val) >= MIN_CHANGE or abs(enc_val - last_val) > THRESHOLD:
+        # Calculate the difference
+        diff = enc_val - last_val
+        # Check for wraparound
+        if diff > THRESHOLD:
+            # Wrapped from ~4095 to ~0 (actually turning backwards)
+            cc.send(enc_dec)
+        elif diff < -THRESHOLD:
+            # Wrapped from ~0 to ~4095 (actually turning forwards)
+            cc.send(enc_inc)
+        elif diff > 0:
+            # Normal forward rotation
+            cc.send(enc_inc)
+        else:
+            # Normal backward rotation (diff < 0)
+            cc.send(enc_dec)
+        last_val = enc_val