Fund Me — ETH Crowdfunding with Price Feeds

Overview

Fund Me is a Solidity-based smart contract that accepts ETH contributions and calculates their USD value in real time using a Chainlink ETH/USD price feed.
It is built and deployed using Foundry — a fast, modular Ethereum development toolkit written in Rust.

Key Features

• Fund Contract — Users send ETH via the fund() function.
• USD Conversion — Real-time price data from Chainlink oracles.
• Owner Withdraw — Only the contract owner can withdraw collected funds.
• Minimum Funding Requirement — Enforces a minimum USD amount before accepting contributions.

Tech Stack

• Solidity — Smart contract logic.
• Foundry — Development, testing, and deployment.
• Chainlink Price Feeds — ETH/USD conversion.
• Sepolia Testnet — Deployment and testing network.

Security Highlights

• Access Control — Only the owner can withdraw funds.
• Price Feed Validation — Reliable Chainlink oracle data.
• Gas Efficiency — Optimized contract structure.
• Test Coverage — Unit tests for funding, withdrawal, and price conversion logic.

Typical Workflow

1. Fund — User calls fund() with ETH.
2. Price Check — Contract checks USD value using Chainlink.
3. Store Contribution — Records sender and amount.
4. Withdraw — Owner retrieves total funds.

📦 Github