dawksh

#include <Servo.h>
#include <Keypad.h>

Servo servoMotor;
const int servoPin = 913;  // Digital pin connected to the servo

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns
char keys[ROWS][COLS] = {
  {'1','2','3','A'},

dawksh

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.1;
pragma abicoder v2;

import "https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/interfaces/ISwapRouter.sol";
import "https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/interfaces/IQuoter.sol";
import "https://github.com/Uniswap/v3-periphery/blob/main/contracts/libraries/TransferHelper.sol";

interface IUniswapRouter is ISwapRouter {
    function refundETH() external payable;