A simple Ethereum-based donation pool that collects micro-donations from users and forwards all collected funds to a fixed charity wallet. The contract is intentionally designed with no imports, no
# Micro Donations Pool – Solidity Smart Contract
A simple Ethereum-based donation pool that collects micro-donations from users and forwards all collected funds to a fixed charity wallet.
The contract is intentionally designed with no imports, no constructors, and no function input parameters.
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## 🛠 Features
- ✅ Anyone can donate using donate() or by sending ETH directly.
- ✅ Tracks individual donor contributions.
- ✅ Anyone can trigger a full withdrawal to the predefined charity via withdrawAll().
- ✅ Includes a basic reentrancy guard for safety.
- ✅ Fully permissionless – no owner, no admin.
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## 📜 Contract Summary
| Function | Visibility | Description |
|--------------|------------|-------------|
| donate() | External / Payable | Accepts ETH donations |
| withdrawAll() | External | Sends full contract balance to charity |
| receive() / fallback() | External / Payable | Accepts direct ETH transfers |
> 🔒 Charity address is hardcoded and cannot be changed after deployment.
> ✏️ **Make sure to replace the placeholder address 0x1111...1111) before deploying.**
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## 🚀 How to Deploy
You can deploy this contract using:
### ✅ Remix (Recommended)
1. Go to **https://remix.ethereum.org**
2. Create a new Solidity file (e.g., MicroDonationPool.sol)
3. Paste the contract code
4. Choose compiler 0.8.19 or higher
5. Click **Deploy**
6. Start donating or trigger withdrawAll()
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## 💡 Suggested Use Cases
- Community crowdfunding for NGO campaigns
- Micro-philanthropy pools
- “Tip jar” forwarding to verified charity wallets
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## ⚠️ Security Notes
- This contract sends **all funds** to the predefined charity when withdrawAll() is called.
- Since **anyone can trigger withdrawal**, ensure that the charity wallet is trusted.
- ETH-only — no support for ERC20 tokens unless extended manually.
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## ✅ License
This project is released under the **MIT License**.
Feel free to modify or enhance it for your use case.
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## 📬 Need Customization?
Want:
- Multi-charity support?
- Admin-restricted withdrawals?
- ERC20-compatible version?
Just ask — I can generate variants instantly.