Add documentation for MotionSensor and Stepper classes

- Add MotionSensor section to recipes.rst (missing from previous merge)
- Add Stepper section to recipes.rst with comprehensive examples
- Update changelog.rst with v0.5.0 entries for both classes
- Organize motor sections together for better flow

docs/changelog.rst

@@ -3,6 +3,13 @@ Change log
 
 .. currentmodule:: picozero
 
+0.5.0 - TBD
+-----------
+
++ Introduced ``MotionSensor`` class for PIR sensors
++ Introduced ``Stepper`` class for stepper motor control
++ Added comprehensive stepper motor API with multiple control methods
+
 0.4.2 - 2023-05-12
 ------------------
 

docs/recipes.rst

@@ -265,13 +265,35 @@ Move the rover (roughly) in a square:
 
 .. literalinclude:: examples/robot_rover_square.py
 
+Stepper motor
+-------------
+
+Control a stepper motor connected via a driver board (e.g. ULN2003):
+
+.. literalinclude:: examples/stepper.py
+
+Advanced positioning with precise angle control:
+
+.. literalinclude:: examples/stepper_positioning.py
+
 Internal temperature sensor
 ---------------------------
 
 Check the internal temperature of the Raspberry Pi Pico in degrees Celcius:
 
 .. literalinclude:: examples/pico_temperature.py
 
+Motion sensor
+-------------
+
+Detect motion using a PIR (Passive Infrared) sensor:
+
+.. literalinclude:: examples/motion_sensor.py
+
+Use callbacks to respond to motion events:
+
+.. literalinclude:: examples/motion_sensor_callbacks.py
+
 Ultrasonic distance sensor
 --------------------------