A high-performance skill that leverages Raspberry Pi native hardware PWM interfaces to provide smooth and precise servo motor control.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install raspberry-pi-servo
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install raspberry-pi-servo using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Raspberry Pi Hardware PWM Servo Control?
This skill allows AI agents to interface directly with the Raspberry Pi kernel hardware PWM modules. Unlike software-based PWM which can suffer from jitter due to CPU overhead, this Openclaw Skills integration ensures stable signals for sensitive hardware components.
It is specifically designed for developers building robotics, automated camera mounts, or any IoT device requiring exact angular positioning. By leveraging the rpi-hardware-pwm Python library, it provides a professional-grade interface for physical automation directly from your agent environment.
Raspberry Pi Hardware PWM Servo Control Use Cases
- Precise angular positioning of servo motors in robotics and mechanical arms.
- Controlling pan-tilt camera mounts for automated tracking or surveillance.
- Building physical notification systems or automated hardware triggers.
- Generating high-frequency PWM signals for testing custom hardware components.
How Raspberry Pi Hardware PWM Servo Control Works
- The skill performs a system check using lsmod and sysfs to verify if the hardware PWM modules are active.
- If the hardware is not configured, it identifies the correct pins based on the Raspberry Pi model (e.g., RPi 5 vs RPi 4).
- It facilitates the modification of the boot firmware configuration to enable necessary device tree overlays.
- Once hardware is ready, it initializes a Python virtual environment to isolate the rpi-hardware-pwm dependencies.
- The agent executes Python commands to start the PWM signal, adjust duty cycles for movement, and stop the signal safely.
Raspberry Pi Hardware PWM Servo Control Setup
To get started with this skill on your device, first check if the hardware interface is enabled:
ls /sys/class/pwm/
If the directory is empty, add dtoverlay=pwm-2chan to your /boot/firmware/config.txt and reboot. Then, install the necessary components for Openclaw Skills integration:
python3 -m venv ~/.venv
source ~/.venv/bin/activate
pip install rpi-hardware-pwm
Raspberry Pi Hardware PWM Servo Control Data Schema & Taxonomy
The skill manages hardware state and configuration through the following schema:
| Attribute | Type | Description |
|---|---|---|
| pwm_channel | Integer | The hardware channel (0, 1, 2, or 3 depending on model) |
| hz | Integer | The frequency of the PWM signal (default 60Hz for servos) |
| duty_cycle | Float | The percentage of the pulse width (0 to 100) |
| chip | Integer | The hardware PWM chip index (usually 0) |
Raspberry Pi Hardware PWM Servo Control Advanced Features
- Multi-channel support for simultaneous control of multiple servos.
- Dynamic frequency adjustment up to 25,000Hz for high-speed hardware applications.
- Hardware-level timing precision that eliminates the 'twitching' common in software-only solutions.
- Model-specific pin mapping detection, including support for the Raspberry Pi 5 architecture.
- Seamless integration into Openclaw Skills automation pipelines for physical-world interaction.
SKILL.md
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