PCBGrade

Interview

Practice the reasoning hardware interviews actually test

Seven topics, drawn from the course. A sitting is one to five challenges, hints off, with an optional timer. After you submit, the report is the explanation: the rule, the measured value, and the limit. Learn stays available when you want the lesson first.

  • Skills

    Each topic uses real course problems. The sitting lists the skills those problems practice.

  • Timing

    Leave the timer off, or set 20 or 45 minutes. The clock stays visible while a problem is open.

  • After you submit

    The score is the same grader as Learn. Failed checks name the next lesson. Nothing here is an AI score.

  1. PCB Fundamentals

    Width, return current, and a stackup. The questions are about copper you can point at.

    • 6. Choose the Right Trace
    • 7. Give Current a Return Path
    • 11. Move to Four Layers

  2. Schematic Reasoning

    A regulator, a protection path, and a gain network. The card tells you the pins. The measurement tells you if you followed it.

    • 8. Build a 3.3 V Supply
    • 9. Protect the Connector
    • 14. Design a Sensor Amplifier

  3. Power and Layout

    The buck hot loop and a high-current path. Placement is the answer, not a shorter line on the screen.

    • 10. Lay Out a Buck Converter
    • 17. Carry 3 Amps Safely

  4. Analog and Mixed Signal

    Filtering, a reference, and where a clock is allowed to run. A split ground is not the default repair.

    • 14. Design a Sensor Amplifier
    • 15. Connect an ADC

  5. Board Debugging

    Symptoms and authored panels. You match a panel to a cause, then change the circuit. The grader measures that repair.

    • 19. Find Why It Fails

  6. High-Speed Fundamentals

    Pair skew, USB continuity, and aggressor spacing. These are layout constraints, not a field solver.

    • 12. Route a Differential Pair
    • 13. Add USB 2.0
    • 16. Route Fast Signals Under Constraints

  7. DFM and Manufacturing

    Silk, courtyards, drills, and the copper around a hole. A circuit can be right and still be hard to build.

    • 18. Make It Manufacturable

Start a sitting

Sign in to see which topics you have already passed in Learn, then start. The sitting is stored separately from Learn progress. The grade is the same measurement.

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