PWM and Servo Control
Configure blocks and MATLAB® objects to generate PWM signals and control standard servo motors on Raspberry Pi hardware. Set PWM output for devices like LEDs, motors, and actuators, or precisely position servo motors using pan tilt hat for interactive application-based examples.
Blocks
| PWM | Generate pulse width modulated signal of digital output pin |
| Pan Tilt Hat | Control pan and tilt motions using PCA9685-based PWM driver (Since R2022a) |
| Standard Servo Write | Set shaft position of standard servo motor to angle specified in degrees |
Objects
servo | Create connection to servo motor |
Functions
writePWMFrequency | Writes PWM frequency to a GPIO pin |
writePWMVoltage | Writes average PWM voltage to a GPIO pin |
writePWMDutyCycle | Writes PWM duty cycle to PWM pin |
writePosition | Write position of servo motor |
Topics
- Raspberry Pi PWM
Raspberry Pi pulse-width modulation (PWM) module.
- Servo Motors
Raspberry Pi servo module.
- Rotate a Servo Motor
This example shows how to rotate a servo motor by its maximum angle.
Featured Examples
Video Mosaicking Using Raspberry Pi Pan Tilt HAT
Use the Pan Tilt HAT block from Raspberry Pi® Blockset to create a mosaic from a video sequence. Video mosaicking is the process of stitching video frames together to form a comprehensive view of a scene. The resulting mosaic image is a compact representation of the video data. This technique is often used in video compression and surveillance applications.
Detect and Track Face Using Raspberry Pi Pan Tilt HAT
Use the Pan Tilt HAT block from Raspberry Pi® Blockset to detect and track a face in a video frame. The example also tracks a face when a person tilts their head either left or right or moves toward or away from the camera. If the face is not visible or goes out of focus, the model tries to reacquire the face and then tracks the face. The model in this example can detect and track only one face at a time. You can also enable the proportional-integral-derivative (PID) controller to achieve a smooth motion of the pan and tilt hardware module for tracking the face.
Configure and Calibrate Pan Tilt Hardware Using Raspberry Pi Pan Tilt HAT
Configure and calibrate the pan and tilt hardware using the Pan Tilt HAT block from Raspberry Pi® Blockset.
