📟⚙️ 6. Sensors: Making a compass

🌍 Earth is a giant magnet!

• 🧲 Microbit has a magnetic field sensor.
• 🧭 Build a compass program.
• 🚀 Start new project named ‘compass’.
• 🔴 Remove ‘on start’, keep ‘forever’.
• ➕ Create new variable: ‘degrees’.
• 🔴 Drag ‘set degrees to 0’ under ‘forever’.
• 🟣 Define variable using ‘compass heading’.

🧭 Degrees represent angles in a circle.

• 🌐 North: 316° to 45°
• ➡️ East: 46° to 135°
• 🌍 South: 136° to 225°
• ⬅️ West: 226° to 315°

• 🧲 Use magnetic field detector to determine direction.
• 💡 Drag ‘if-else’ command from logic menu after setting compass heading.

• 🌙 Replace ‘true’ with ‘0 < 0’ command.
• 🔄 Use ‘degrees’ less than 45 for North.
• 🖼️ Drag ‘show string’ under ‘if degrees < 45’.
• ✏️ Change string to ‘N’.

• 🧭 If degrees are between 0 and 45, display letter N for North.
• 🧭 Additional adjustments needed for North between 316 and 360 degrees.
• 🧭 Repeat process for East, South, and West directions.

🧭 Fill in bottom gap with ‘show string N’ for North.

• 📥 Download project onto Microbit and try it out.
• 🔄 Calibrate Micro: bit’s compass by tilting towards unlit LEDs.
• 🧲 Avoid magnets or metal to ensure compass accuracy.
• 🔍 Test compass functionality.
• 🔼 Optionally add commands for North East, North West, South East, and South West.