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शिक्षाby Grow10x
RoboticsG12-P02

Fail-Safe Relay Switch

A relay-switched low-voltage lamp that is off by default and always obeys a manual switch.

  • Class 12 · Integrate
  • Sessions 06-10 · Weeks 3-5
  • In Discovery, Builder, Innovation
  • Hands-on build
Class 12 showcase
Sound-Aware Smart Room
The five-session sprint

Session by session

  1. Session 06 · Ask & understandWeek 3

    Relays, isolation and why mains stays out of student work

    Evidence: a question, sketch or new vocabulary

  2. Session 07 · Build & designWeek 4

    Wire the relay to a low-voltage lamp

    Evidence: a design draft, dataset or build

  3. Session 08 · ImplementWeek 4

    Program off-by-default switching with debounce

    Evidence: a working version, explained once

  4. Session 09 · Test & improveWeek 5

    Test power loss, reset and manual override

    Evidence: a test log with at least one failure

  5. Session 10 · Explain & reflectWeek 5

    Document every safe state

    Evidence: an individual explanation

Materials & tools
  • UNO
  • 1-channel relay module
  • low-voltage lamp module
  • on-off switch
  • push button
  • approved pack
Minimum test

Twenty switching cycles plus power-loss, reset and manual-override tests.

Hands-on build

A physical circuit, sensor or mechanism, built and tested on the bench.

Completion needs the artefact, an honest test log, an individual explanation and no open safety or privacy issue.

Robotics project

A physical circuit, sensor or mechanism, built and tested.

Two teachers guiding uniformed students as they build a robot car in a classroomFor school leaders

Choose a starting point.
Build from evidence.

Pick the classes and a plan. We map the timetable, kit and safety checks with you, then pilot one class first.

  • Prospectus and class-wise plan
  • Kit and readiness check
  • Pilot one class first
  • Evidence at every milestone
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