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简体中文 | English

Balance Copper

EasyEDA Pro extension — Automatically fills blank areas on PCB layers with non-functional copper patterns to balance copper density across layers, improving plating uniformity and manufacturing yield.

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PCB 2D
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Features

Supported Pattern Types

Pattern Description
Circle Circular dots
Square Square shapes
Rectangle Rectangular shapes
Diamond Rhombus (diagonals = width/height)
Oval Stadium/oblong shape
Triangle Isosceles triangle
Pentagon Regular pentagon
Hexagon Regular hexagon
Trapezoid Isosceles trapezoid (top = bottom/2)

Core Capabilities

  • Precise Clearance: Accurate avoidance for tracks (capsule shape), pads (actual shape + rotation), vias, copper pours, existing fills, and routing slots
  • Footprint-aware: Parses footprint files to avoid pads (with rotation) and MULTI-layer routing slots (circle/rectangle/arbitrary polygon)
  • DRC Spacing: Auto-reads DRC rule matrix, applies per-type clearance (track/pad/region/board edge)
  • Stagger: Optional staggered row offset; layer stagger offsets adjacent layers by half a step
  • Rotation: Arbitrary rotation angle for all patterns
  • Target Layers: Current layer / All signal layers / All solder mask layers / Signal + mask
  • Area Generate: Click two points on the canvas to define a fill region
  • Auto DRC: Optionally run DRC check after generation completes
  • Expression Input: Parameter inputs support arithmetic (e.g., 5+3 auto-evaluates to 8)
  • Unit Adaptive: Auto-detects current EDA unit (mil/mm/inch) and converts accordingly
  • Bilingual: Follows EDA language setting (Chinese / English)

Spacing

The spacing parameter is the gap between pattern edges, not center-to-center distance. Actual grid step = pattern size + spacing. Horizontal and vertical spacing can be set independently.

Installation

  1. Download the latest .eext file from Releases
  2. In EasyEDA Pro: Extensions → Manage Extensions → Install Local Extension
  3. Select the downloaded .eext file

Usage

  1. Open a PCB design document
  2. Menu bar → Extensions → Balance Copper Tool → Balance Copper...
  3. Select pattern type and configure parameters
  4. Click "Generate" or "Area by Click"

License

Apache License 2.0