This is an example dapp built using hardhat and deployed on the rinkeby test network with the help of Alchemy. There is a simple frontend UI created using replit and all wave logic is written in smart contracts using solidity.

To use this app write a message you wish to wave and click wave, this will real-time send a wave transaction through the Rinkeby test network. Which you can then check using the etherscan here https://rinkeby.etherscan.io/.

To test the smart contract run, you need to install hardhat and run it locally first.

npx hardhat
npx hardhat compile
npx hardhat test
npx hardhat run scripts/run.js

If you want to recompile and redeploy a new smart contract to the rinkeby testnet you can:

npx hardhat run scripts/deploy.js --network rinkeby

Now edit the newly deployed contract address to ./frontend/src/App.jsx by updating the contractAddress parameter and copy all the compiled ABI code under ./artifacts/contracts/wavePortal.sol/Waveportal.json to ./frontend/src/utils/WavePortal.json.

Enjoy and have fun with this app.