Elliptical Trammel (interactive offline HTML demo)
$4.00 USDC
Description
Single-file offline HTML interactive demo of an elliptical trammel (Trammel of Archimedes).
Features:
- Animated constrained-slider mechanism drawing a true ellipse
- Adjustable arm lengths
- Dark educational UI
- Runs entirely in the browser — no install, no account
Delivered as elliptical-trammel.html. Open in any modern browser.
How It Works
- Click “Purchase” below
- Approve the payment of $4.00 USDC in your wallet
- Payment is verified instantly on-chain
- Download link appears immediately after payment
- Seller receives payment directly — we never hold funds
No accounts required. No middlemen. Your wallet is your login.