Mass-weighted support positions arrange nested suspension rods. Coupled pendulum equations evolve their angles under an initial impulse and damping, moving the attached crescent, oval and ring as a decorative kinetic composition.
- Needs
- Python 3 · FFmpeg
v1.0.0 · Updated Oct 25, 2026 · 528 KB · Use it for personal and client work; please don't resell or share the package.
What you get
A real 1280 × 720 MP4, poster, contact sheet and source-hash receipt
Editable local JSON and the task-specific implementation
Good for
- Kinetic-art studies and calm sculptural interludes.
Not for
- A structural safety analysis, fabrication-ready balance plan or full three-dimensional rigid-body solver.
How it works
Includes a local renderer
Prepare the actual input
The bundled procedural scene; no image is needed.
Apply the supported controls
Change the left mass and resulting support position. Set the initial breeze strength. Adjust damping and film duration.
Build and review the result
The video renderer streams frames locally, emits H.264/yuv420p with fast-start metadata, and is silent. Add separately authorized audio in an external edit only if requested.
How the workflow runs
How Suspended Mobile Ballet works
Mass-weighted support positions arrange nested suspension rods. Coupled pendulum equations evolve their angles under an initial impulse and damping, moving the attached crescent, oval and ring as a decorative kinetic composition.
What's inside the skill
What you can change
- Change the left mass and resulting support position.
- Set the initial breeze strength.
- Adjust damping and film duration.
What to review before delivery
- The selftest changes mass and verifies a visible frame difference.
- Review connections, balance and movement limits during full playback.
See the package files
These are selected working files from this edition, with their actual role. The complete download also contains instructions and applicable license notices.
Calculates weighted suspension positions and integrates coupled damped pendulum angles.
scripts/scene.pyLocal validation, protected output and artifact construction.
scripts/render.pyRunnable example with actual supported controls.
examples/project.jsonMechanism-specific limits and visual review criteria.
references/production.md
Why use this skill
Start with this package
Mass-weighted support positions arrange nested suspension rods. Coupled pendulum equations evolve their angles under an initial impulse and damping, moving the attached crescent, oval and ring as a decorative kinetic composition. The package supplies the working example, bounded inputs and export route so these do not need to be designed from a plain prompt.
Compare the options
A prompt, your own skill, or this workflow?
Start with a prompt
Your agent can create from a plain request. The brief, visual rules, asset choices, output format and review process still need to be established for that project.
Write your own skill
You choose and maintain the reusable instructions, defaults, file structure and checks. This is useful when your process needs different rules or integrations.
A workflow created for PopNow
This workflow was built for PopNow. Its source files, included dependencies and applicable notices are part of the package; the scope described below belongs to this edition.
Guide reviewed Oct 25, 2026
What will this cost?
The bundled procedural or font-based example runs locally without media generation. Computer time and the agent or external viewer you use are outside PopNow generation charges. New optional media requested later needs its own quote.
The supplied route runs locally. A new-media request is a separate choice. Free skill. New media is quoted before it runs.
The skill package
Free to install under your account's download allowance. The package license covers your own and client work; redistribution is excluded.
Existing assets and local work
Reusing suitable assets, editing files and running local assembly do not call a PopNow generation model. Your computer and any required runtime still do the work.
Your agent and hosting
Any subscription, hosted computer, deployment or other provider fee belongs to that service. Installing this skill does not include those services.
How PopNow billing works
Connections using a PopNow API key, including API-key MCP connections, spend from the separate API balance in USD. A ChatGPT or Claude connection authorized through OAuth spends website credits. These balances are separate; the quote shown by your connection is the approval basis.
Download allowances and current account conditions apply. A free package does not mean unlimited free generation.
How to use it
You say
Use the PopNow skill "Suspended Mobile Ballet" (suspended-mobile-ballet) for this: Balance a hanging sculpture and animate its damped, coupled response to a gentle initial breeze. Start with the bundled project, make the requested edits and inspect the actual output.
Then try
Change the left mass and resulting support position.
Set the initial breeze strength.
What to have ready
- The bundled procedural scene; no image is needed.
- Python, Pillow, NumPy and FFmpeg/ffprobe.
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Questions
Are the rods driven by a fixed cam?
No. The angles follow coupled damped pendulum equations. The decorative projection is intentionally simple and is not a complete physical model of a manufactured mobile.
Does the bundled example require paid generation?
No. The included assets or procedural inputs run locally. If you ask for new images, clips or sound, use PopNow with an exact quote and approval before generation; API USD and OAuth website credits are separate.
What is already packaged in Suspended Mobile Ballet?
Calculates weighted suspension positions and integrates coupled damped pendulum angles. Local validation, protected output and artifact construction. Runnable example with actual supported controls. Mechanism-specific limits and visual review criteria.
Which parts of Suspended Mobile Ballet can add a charge?
The bundled procedural or font-based example runs locally without media generation. Computer time and the agent or external viewer you use are outside PopNow generation charges. New optional media requested later needs its own quote. Connections using a PopNow API key, including API-key MCP connections, spend from the separate API balance in USD. A ChatGPT or Claude connection authorized through OAuth spends website credits. These balances are separate; the quote shown by your connection is the approval basis.
How does Suspended Mobile Ballet differ from writing a prompt or my own skill?
Mass-weighted support positions arrange nested suspension rods. Coupled pendulum equations evolve their angles under an initial impulse and damping, moving the attached crescent, oval and ring as a decorative kinetic composition. The package supplies the working example, bounded inputs and export route so these do not need to be designed from a plain prompt.