DesignGuard

KiCad schematic and PCB validation library for Rust.

Catches common design mistakes before manufacturing:

• Missing decoupling capacitors
• Incorrect pull-up/pull-down resistors
• Trace width violations (IPC-2221)
• Component datasheet compliance
• Power integrity issues
• EMI/EMC concerns

Installation

Add to your Cargo.toml:

[dependencies]
designguard = "0.1"

Quick Start

use designguard::prelude::*;
use std::path::Path;

fn main() -> Result<(), DesignGuardError> {
    let options = ValidationOptions::default();

    let result = DesignGuardCore::validate_schematic(
        Path::new("design.kicad_sch"),
        options,
    )?;

    for issue in &result.issues {
        println!("{:?}: {}", issue.severity, issue.message);
    }

    if result.has_critical() {
        eprintln!("Critical issues found!");
        std::process::exit(1);
    }

    Ok(())
}

Features

Schematic validation

• Decoupling capacitors: 100nF bypass caps near IC power pins
• I2C pull-ups: 2.2k–10k on SDA/SCL nets
• Crystal load caps: 10–33pF paired capacitors
• Power integrity: GND symbols and IC power connections
• ESD protection: TVS diodes on USB/Ethernet
• Datasheet checks: Built-in component library (STM32, ESP32, RP2040, etc.)

PCB validation

• Trace width: IPC-2221 current capacity
• EMI checks: Plane gaps, via placement, crosstalk
• Custom rules: JSON rule engine

Examples

See the examples/ directory:

• simple_validation.rs – basic usage
• custom_rules.rs – using RulesEngine with default rules

CLI and GUI

• CLI: designguard-cli (same repo, workspace member)
• GUI: DesignGuard desktop app

Documentation

• API docs (when published): docs.rs/designguard. If the crate was just published, docs.rs may take a few minutes to build; you can request a rebuild if needed.
• Build docs locally: From the repo root run cargo doc --no-deps -p designguard --open to build and open the API docs (same as docs.rs).

License

MIT – see LICENSE in the repository root.