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Electronics MCP Servers

Electronics MCP Servers

Local
github.com/wedsamuel1230Science & Education1Updated 42w ago
Repository

About Electronics MCP Servers

Electronics MCP Servers is an MCP server for electronics engineers, with resistor, capacitor, and GPIO tools for ESP32, Arduino, and STM32 boards.

Key features

  1. 01Decode and encode resistor bands
  2. 02Find standard resistor values
  3. 03Calculate capacitor and RC values
  4. 04Calculate resonance and suggest filters
  5. 05Look up GPIO pins and functions
  6. 06Check pin conflicts and draw diagrams

Use cases

  1. 01Read resistance from color bands
  2. 02Calculate RC time constants or resonance
  3. 03Find PWM, ADC, or bus pins on a board
  4. 04Check for conflicts among selected pins

MCP support

The server exposes 14 electronics tools to MCP clients, covering resistors, capacitors, and GPIO.

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "wedsamuel1230-electronic": {
      "command": "uvx",
      "args": [
        "electronics-mcp-servers"
      ]
    }
  }
}
Run commanduvx electronics-mcp-servers

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
pypielectronics-mcp-servers1.0.2

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

Electronics MCP Servers

A comprehensive Model Context Protocol (MCP) server providing 14 electronics engineering tools across 3 domains.

PyPI version License: MIT Python 3.10+

Installation

pip install electronics-mcp-servers

Testing & Verification

After installation, verify the package is working:

Test with uvx (recommended for MCP clients)
# Alternative: Test individual servers
uvx --from electronics-mcp-servers resistor-decoder
uvx --from electronics-mcp-servers capacitor-calc
uvx --from electronics-mcp-servers gpio-reference
Test with pip install
# After pip install, test the CLI
electronics-mcp-servers --version

# Or test individual tools
resistor-decoder --help
capacitor-calc --help
gpio-reference --help
Naming Clarification

This project uses different naming conventions in different contexts:

  • MCP Registry ID: io.github.wedsamuel1230/electronic-mcp-server (singular)
  • PyPI Package: electronics-mcp-servers (plural)
  • CLI Executables: electronics-mcp-servers, resistor-decoder, capacitor-calc, gpio-reference

When using uvx, always use the PyPI package name (electronics-mcp-servers).

Troubleshooting

Problem: uvx electronics-mcp-servers shows "executable not provided" error

Solution: The main electronics-mcp-servers executable was added in version 1.0.2. Make sure you have the latest version:

# Force uvx to fetch the latest version
uvx --refresh electronics-mcp-servers

# Or specify the version explicitly
uvx --from electronics-mcp-servers==1.0.2 electronics-mcp-servers

# Check installed version
pip index versions electronics-mcp-servers

If the error persists, PyPI may still be serving version 1.0.1. Wait a few minutes and try again.

Features

🎨 Resistor Decoder (3 tools)
  • decode_resistor_color_bands: Convert color bands to resistance value
  • encode_resistor_value: Convert resistance to color bands
  • find_standard_resistor: Find nearest E12/E24/E96 series value
⚡ Capacitor Calculator (4 tools)
  • calculate_capacitive_reactance: Frequency-dependent impedance
  • calculate_rc_time_constant: RC circuit time calculations
  • calculate_resonant_frequency: LC tank resonance
  • suggest_capacitor_for_filter: Filter design recommendations
📌 GPIO Pin Reference (7 tools)
  • get_pin_info: Detailed pin specifications (ESP32/Arduino/STM32)
  • find_pwm_pins: PWM-capable pin discovery
  • find_adc_pins: ADC channel mapping
  • find_i2c_pins: I2C bus pins
  • find_spi_pins: SPI bus pins
  • check_pin_conflict: Multi-pin conflict detection
  • generate_pin_diagram_ascii: Visual pinout diagrams

Supported Boards

  • ESP32 DevKitC
  • Arduino UNO R3
  • STM32F103C8T6 (Blue Pill)

Usage

As an MCP Server

Add to your MCP client configuration (e.g., Claude Desktop):

{
  "mcpServers": {
    "electronics": {
      "command": "python",
      "args": ["-m", "servers"]
    }
  }
}

Or with uvx:

{
  "mcpServers": {
    "electronics": {
      "command": "uvx",
      "args": ["electronics-mcp-servers"]
    }
  }
}
Direct Python Usage
from servers.resistor_decoder import decode_color_bands
from servers.capacitor_calculator import calculate_rc_time_constant
from servers.gpio_reference import get_pin_info

# Decode a resistor
result = decode_color_bands(["brown", "black", "red", "gold"])
# Returns: {"resistance": 1000, "tolerance": 5, "formatted": "1kΩ ±5%"}

# Calculate RC time constant
tau = calculate_rc_time_constant(10000, 100e-6)
# Returns: {"tau": 1.0, "time_63pct": 1.0, "time_full": 5.0}

# Get ESP32 pin info
pin = get_pin_info("ESP32", 32)
# Returns detailed pin capabilities

Requirements

  • Python 3.10+
  • FastMCP (mcp[cli]>=1.1.0)

License

MIT License - Copyright (c) 2026 Samuel F.

Links

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An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.