Remix IDE

Create the Contract

Open Remix IDE and create a new file called Counter.sol in the File Explorer. Add the following code:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.30;

contract Counter {
    uint256 public number;

    function setNumber(uint256 newNumber) public {
        number = newNumber;
    }

    function increment() public {
        number++;
    }
}

Compile the Contract

1. Click the Solidity Compiler tab (in the left sidebar)
2. Select compiler version 0.8.30 or higher
3. Click Compile Counter.sol

Deploy to RISE Testnet

1. Click the Deploy & Run Transactions tab (in the left sidebar)
2. In the Environment dropdown, select Injected Provider - MetaMask (or whichever wallet you have)
3. Your wallet will prompt you to connect - approve the connection
4. Important: Make sure your wallet is connected to RISE Testnet (Chain ID: 11155931)
5. Ensure Counter is selected in the Contract dropdown
6. Click Deploy
7. Confirm the transaction in your wallet

Interact with the Contract

Once deployed, your contract will appear under Deployed Contracts:

• Click number to read the current value (starts at 0)
• Enter a value and click setNumber to set a new number
• Click increment to increase the number by 1

Each write operation (setNumber, increment) will require a transaction confirmation in your wallet.