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