End of Section #1 Code

deploy.js

const main = async () => {
  const nftContractFactory = await hre.ethers.getContractFactory('MyEpicNFT');
  const nftContract = await nftContractFactory.deploy();
  await nftContract.deployed();
  console.log("Contract deployed to:", nftContract.address);

  // Call the function.
  let txn = await nftContract.makeAnEpicNFT()
  // Wait for it to be mined.
  await txn.wait()
  console.log("Minted NFT #1")

  txn = await nftContract.makeAnEpicNFT()
  // Wait for it to be mined.
  await txn.wait()
  console.log("Minted NFT #2")
};

const runMain = async () => {
  try {
    await main();
    process.exit(0);
  } catch (error) {
    console.log(error);
    process.exit(1);
  }
};

runMain();

hardhat.config.js

require('@nomiclabs/hardhat-waffle');

module.export = {
  solidity: '0.8.0',
  networks: {
    rinkeby: {
      url: 'YOUR ALCHEMY_API_URL',
      accounts: ['YOUR_PRIVATE_RINKEBY_ACCOUNT_KEY'],
    },
  },
};`

MyEpicNFT.sol

pragma solidity 0.8.0;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "hardhat/console.sol";

contract MyEpicNFT is ERC721URIStorage {
  using Counters for Counters.Counter;
  Counters.Counter private _tokenIds;

  constructor() ERC721 ("SquareNFT", "SQUARE") {
    console.log("This is my NFT contract. Woah!");
  }

  function makeAnEpicNFT() public {
    uint256 newItemId = _tokenIds.current();
    _safeMint(msg.sender, newItemId);
    _setTokenURI(newItemId, "https://jsonkeeper.com/b/RUUS");
    _tokenIds.increment();
    console.log("An NFT w/ ID %s has been minted to %s", newItemId, msg.sender);
  }
}

run.js

const main = async () => {
  const nftContractFactory = await hre.ethers.getContractFactory('MyEpicNFT');
  const nftContract = await nftContractFactory.deploy();
  await nftContract.deployed();
  console.log("Contract deployed to:", nftContract.address);

  // Call the function.
  let txn = await nftContract.makeAnEpicNFT()
  // Wait for it to be mined.
  await txn.wait()

  txn = await nftContract.makeAnEpicNFT()
  // Wait for it to be mined.
  await txn.wait()
};

const runMain = async () => {
  try {
    await main();
    process.exit(0);
  } catch (error) {
    console.log(error);
    process.exit(1);
  }
};

runMain();

hardhat-config-js have a symbol ` which should be removed

amazing!, thank you

accounts: ['YOUR_PRIVATE_RINKEBY_ACCOUNT_KEY'] which private key is it ( is it the rinkbey test network private key on my metamask wallet or is it something else?

@cl-rs yes the private key on your metamask wallet.

⚠️ Please make sure to not commit hardhat.config.js to git.

If you want to commit to git, use dotenv.

hardhat.config.js

...
require('dotenv').config();
...

module.exports = {
  solidity: ...,
  networks: {
    rinkeby: {
      url: process.env.RINKEBY_URL,
      accounts: [process.env.PRIVATE_KEY],
    },
  },
};

Create a file named .env in the source of the project with the following content

RINKEBY_URL=[REPLACE_BY_YOUR_ALCHEMY_URL]
PRIVATE_KEY=[REPLACE_BY_YOUR_METAMASK_PRIV_KEY]

Finally run npm instal env.

I'm not sure if this was necessary, but I added the 0x prior to the account key:

accounts: [0x${PRIVATE_RINKEBY_ACCOUNT_KEY}]

If yours isn't working, this might be why. Didn't try it without, so not sure if this is just common sense or if it was unnecessary.

big thanks mate!

In hardhat.config.js > line 3 > module.export = {

It should be module.exports = {