Schematic Review Example Workflow

This guide details how to perform an automated electrical audit of a schematic sheet to verify net connections, identify open/short circuits, and check decoupling capacitor placement.

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1. Retrieve the Complete Netlist

Fetch all active nets and connected components in the sheet:

MCP Call: easyeda_schematic_nets

Netlist Output:

{
  "total": 3,
  "nets": [
    {
      "net_name": "VCC",
      "node_count": 2,
      "nodes": [
        { "component_ref": "U1", "pin": "3V3" },
        { "component_ref": "R1", "pin": "1" }
      ]
    },
    {
      "net_name": "GND",
      "node_count": 1,
      "nodes": [{ "component_ref": "U1", "pin": "GND" }]
    }
  ]
}

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2. Identify Floating Nets (Single-Node Nets)

An electrical rule of thumb is that active nets must have at least two nodes (a driver and a receiver). In the output above, the GND net has node_count: 1, indicating it is a floating net or missing a terminal connection.

AI Assessment:

⚠️ Warning: Net "GND" is connected only to U1.GND. It is missing a power port or connection to other grounds.

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3. Verify Pin Names and Connections

For complex ICs, retrieve the pin map of the schematic symbol:

MCP Call: easyeda_schematic_component_pins with the primitive ID of U1.

Pin Mapping:

{
  "primitiveId": "U1_id",
  "pins": [
    { "pinNumber": "1", "pinName": "3V3" },
    { "pinNumber": "2", "pinName": "EN" },
    { "pinNumber": "15", "pinName": "GND" }
  ]
}

The AI verifies if the EN (Enable) pin is pulled high or left floating. If left floating, it warns the user that the microcontroller might remain disabled during startup.