📟⚙️ 10. Light: Making a light meter

 🔦 Welcome to “Light Craft”! 🌟

🔍 Explore the world of light & technology with micro: bit
🎨 Unravel secrets of light through code & electronics
🌌 Create mesmerizing night lights & dynamic flashing lights
👩‍💻 Beginner-friendly or for experienced coders
🤝 Hands-on experience in sensing & manipulating light
🌟 Comprehensive exploration of light using micro: bit
🌈 Shape & control the glow with micro: bit
✨ Let’s begin this luminous adventure! 🚀

Making a light meter:

🔆 Activity: Light Sensor Exploration

• 🤖 Using Micro: bits built-in light sensor.
• 💡 LEDs on Microbit function as sensors and lights.
• 🔄 6 LEDs take light readings.
• 📊 System calculates average to gauge room light.
• 🏠 Indicates room brightness level.

🔆 Light sensors used in many devices

• Turn on/off based on darkness.
• Night lights, mobile phones utilize them.

👩‍💻 Start at makecode.microbit.org

• Create new project.
• Delete ‘on start’ and ‘forever’ blocks.

🔴 Create and define variable

• Variable = ‘level’
• Set initial value to 0

🟣 Define variable

• Use ‘light level’ command from purple input menu.

Next, we need to tell the system when we want this to happen. Let’s use the

• 🔘 Locate “on button A pressed” command.
• 🔍 Found in the purple menu.
• 🖱️ Click and drag “on button A pressed” to your screen.
• 🔧 Place “set level to light level” block underneath.

• 🔵 Go to the basic menu.
• 🔄 Drag ‘show number’ under ‘set level to light level’ command.

• 🔄 Replace ‘0’ with ‘level’ in red variables menu.
• 🖼️ Drag ‘level’ command to replace ‘0’.

📥 Download programme onto Micro: bit.

🅰️ Press A button

• 💡 Reading of 0 = pitch black
• 💡 Reading of 255 = really bright
• 🏠 Find darkest room & brightest room
• 🔦 Shine torch on Microbit
• 🔍 Move torch closer/further from LEDs