> For the complete documentation index, see [llms.txt](https://docs.vea.ninja/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vea.ninja/build-xchain-dapps/lightbulb-demo/tutorial.md).

# Tutorial

## Goal

This quickstart guide walks through a [tutorial repo](https://github.com/kleros/vea-lightbulb-tutorial) to deploy a cross-chain application connecting a switch on Arbitrum Sepolia to a lightbulb on Chiado or Sepolia using the Vea devnet/testnet.

The tutorial will deploy contracts which implement the same cross-chain functionality as the Vea Lightbulb [demo](https://vea-lightbulb.vercel.app/).