Decentralized Exchange to Swap ERC20 tokens for ETH using Automated Market Makers. Deposit / Withdraw Liquidity.
This is a PoC decentralized exchange (like uniswap) that serves to exchange ERC20 tokes for eth. Currently version is working with a single token (injected in the constructor at deploying time). This project have the purpose of learning how about how DApps work. By building this project I learned:
- How to code a ERC20 Token
- How to sent ERC20 tokens
- How Liquidity Pools Work
- How Automated Market Makers work
- How to use payable functions
- How to interact with metamask
- How to interact with Smart Contracts from a webapp
- How to deploy contracts to a public testnet
It is structured in two main folders: UI and Contracts.
The UI folder has a frontend project vite + tailwind and the web3 library is implemented twice: one implementation using ether.js and the other one using web3.js.
On the other side the Contracts folder contain a truffle project with the Token.sol and Dex.sol contracts.
Make sure you have truffle installed.
You will need a Infura key if you want to order to deploy the contracts, but if you want to run a local blockchain (e.g ganache) you only have to make sure your the port it is running is the same as in the truffle-config.js (e.g port: 7545).
Deploy the Contracts
npm install
truflle compile
truflle deploy --network developmentAfter deploying the contracts your deployer address will have a ton of ERC20 tokens that were minted at deploying stage.
Run the frontend DApp
go to the UI folder and follow the README instructions.
NOTE: You have to put the deployed addresses in the following file:
/ui/packages/dapp-final/src/config/ping-contract.js
This project was built as Academic tool while I was working for Settle Network. The frontend code was entirely wrote by Jose Jimenez and Charly Iglesias. If you want to know what they are building, go and check the ping app