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Intermediate build

Blinking Guard Light Model

A tabletop model inspired by Richard Turere's Lion Lights — a safe coin-cell LED that makes a fence look 'watched'.

Timebox

Two sessions · about 2 hours total

Safety

Coin cells are a swallowing hazard — keep them away from small children and pets. No mains power.

Materials

  • —2 LEDs (5 mm) and a CR2032 coin-cell battery with holder
  • —Copper tape or short jumper wires
  • —A small slide switch
  • —Craft sticks to build a model fence
  • —Cardboard base, tape, hot glue (adult)
  • —Notebook

Steps

  1. 1. Understand the story15 min

    Read about Richard Turere on the Nobles library. What problem did lights solve — and why did they work on lions?

  2. 2. Build the fence25 min

    Glue craft sticks into a small fence on the cardboard base.

  3. 3. Light circuit30 min

    Connect battery → switch → LED (long leg to +). Test one LED, then add the second in parallel.

  4. 4. Make it move30 min

    Place LEDs at different fence posts and switch between them by hand. Ask a friend: does switching look more 'alive' than steady light?

  5. 5. Look again20 min

    Write what a real farmer would need that your model doesn't have: weatherproofing, power, maintenance.

Field Notes

Write these in your notebook when you finish:

  • □Model vs. real-world gaps
  • □Friend's feedback
  • □Next test

Inspired by Richard Turere — read their story in the Nobles library.