I made a Python program using MCP protocol to interface between AI and an LED.
Source Code: https://github.com/tomjuggler/BlinkMCPServer – includes Arduino sketch and MCP python server with example Cline json config.
Tech used: FastMCP (Python) Arduino Uno (Serial) and Cline for VSCode (MCP Client), with DeepSeek Reasoner as the LLM – massive overkill just to turn on an LED!
This project was built using Aider – pair programming in your terminal.
https://aider.chat/
Check out the demo video where I tell the AI to turn on my LED – all done from Cline agent inside VSCode!