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Solar Light Hackathon!

How the Sun Can Power our Fan and Lights!!

By: Shubhangi Grover

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�What Are We Going to Do Today?�

✅ Measure sunlight ☀️

✅ See how a solar light works 💡

✅ Use solar energy to run a fan.

✅ Try powering more lights with stored energy 💡💡

✅ Learn how we can use sunlight in real life!

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What Do We Need?

MT-912 Light Meter 📟 (to measure sunlight)

A solar garden light 💡 (like one from Walmart!)

Screwdriver or nail filer 🔧

Small fan or motor

Wires 🧵

A battery 🔋

LEDs and breadboard (for more lights!)

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Step 1 – Measure the Sunlight

  • Use a light meter to check how bright the sunlight is.
  • It shows numbers in “lux” – that tells us how strong the light is!
  • Try checking it under sunlight, partially shaded, and fully shaded.

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Step 2 – Charge the Solar Light

  • Put the solar light outside in the sun for 2-5 minutes.
  • It has a small solar panel on top – it collects sunlight!
  • When it’s dark, it automatically turns on! 🌙✨
  • Make sure you remove the green paper inside. (This enables circuit completion).

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What’s Happening Inside?

  • Inside the solar light is a tiny battery.
  • The solar panel charges the battery using sunlight.
  • At night, the battery powers the LED light.

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Step 3 – Time to Play with the Solar Light!!

  • Open the solar light and separate the black head from rest of the body.
  • Unscrew the two screws inside the black head.
  • Take out the little solar-charged battery.

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Step 4 – Run the Fan using the Battery!!

  • Step 4.1

Step 4.2

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Step 4 – Run the Fan using the Battery

🎉 It spins! That’s solar energy turning into motion energy!

  • Step 4.3

Step 4.4

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Try a Stronger Battery

  • Now, try a Duracell 1.5V battery.
  • What happens? The fan spins faster!
  • This shows how voltage affects speed.

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Make It Bigger (Bonus!)

  • Use a bigger battery and a breadboard.
  • Connect more lights (LEDs).
  • Now you're making your own solar-powered system!
  • Store more energy = Power more things!

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What Did We Learn?

  • Sunlight can be turned into electricity
  • We can store that energy in a battery
  • That energy can power a fan or lights
  • It’s clean, free, and renewable! 🌱

This Photo by Unknown Author is licensed under CC BY

This Photo by Unknown Author is licensed under CC BY

This Photo by Unknown Author is licensed under CC BY-SA-NC

This Photo by Unknown Author is licensed under CC BY

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Why Is This Important?

  • Solar energy helps us save the Earth 🌍
  • No pollution = Cleaner air and water
  • We can use it in homes, schools, and even on satellites 🚀
  • Learning this helps us become future scientists and inventors! 🧑‍🔬

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What Can You Try Next?

  • Make a solar car or windmill
  • Power your school project with solar lights
  • Add a solar phone charger to your backpack! ☀️🔌📱
  • Think of ways to help your family use solar power at home

This Photo by Unknown Author is licensed under CC BY

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Thank You & Q&A

ANY QUESTIONS?

WANT TO TRY BUILDING IT YOURSELF?

LET’S TALK! 😄