Model Context Protocol (MCP) Server for IoT Devices (Arduino)

MCP for IOT is a Go implementation of the Model Context Protocol (MCP) server that allows AI models like Claude to directly interact with IoT devices, specifically Arduino boards. This server acts as a bridge between Claude and your Arduino hardware, enabling AI-controlled hardware automation.

• 🔌 List available serial ports
• 📡 Read data from Arduino's serial port
• 🚦 Control digital pins (LEDs, relays, etc.)
• 🔊 Control buzzers with on/off and duration settings
• 🤖 Seamless integration with Claude AI

• Go (version 1.24 or later)
• Arduino hardware with USB connection
• Claude Desktop App or compatible MCP client

git clone https://github.com/sukeesh/mcp-iot-go.git
cd mcp-iot-go
go install

The binary will be installed to your GOBIN directory, which should be in your PATH.

1. Connect your Arduino to your computer
2. Upload the provided Arduino firmware:

   arduino/firmware.ino
   

This firmware accepts commands via serial communication:

• M,pin,mode - Sets pin mode (e.g., M,6,OUTPUT)
• D,pin,value - Controls digital pins (e.g., D,6,HIGH or D,6,LOW)
• BZ,pin,state - Controls buzzers (e.g., BZ,8,ON or BZ,8,OFF)

Configure Claude Desktop:

1. Open Claude Desktop → Settings → Developer → Edit Config
2. Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "iot": {
      "command": "<path-to-mcp-iot-go-binary>",
      "env": {}
    }
  }
}

3. Restart Claude Desktop

After setup, you can interact with your Arduino hardware directly through Claude:

• "List all available serial ports"
• "Read data from the Arduino on port /dev/cu.usbmodem12401"
• "Turn on the red LED on pin 6"
• "Activate the buzzer on pin 8 for 2 seconds"

• main.go - MCP server setup and tool definitions
• internal/tools.go - Tool implementation for Arduino communication
• arduino/firmware.ino - Arduino firmware for processing commands

• mcp-go - Go library for MCP implementation
• go.bug.st/serial - Serial port communication library

Contributions are welcome! Please feel free to submit a Pull Request.