📟⚙️ 4. Sensors: Making a Thermometer

Introduction

• Exciting exploration into Micro: bit sensors 🌐
• Covers thermometer, step counter, and compass 🌡️👣🧭
• Dive into sensor capabilities 🕵️‍♂️

🌡️ Making a thermometer:

• Built-in temperature sensor detects CPU heat 🌡️
• Don’t expose Microbit to extreme temperatures ⚠️
• Create variable ‘level’ in Make Code 💻
• Explore temperature differences indoors/outdoors 🏠🌳

Steps:

• 🛠️ Drag the ‘set level to 0’ block onto your screen. It will show as grey until placed under a basic or input command.
• 🟣 Define the variable by replacing the 0 with ‘temperature’ from the purple input menu.
• 📟 Specify when the action should occur using the ‘on button B pressed’ command. Change A to B and place the ‘set level to temperature’ block underneath.
• 📊 Show the temperature on the screen by dragging a ‘show number’ command from the basic (blue) menu.
• 📏 Replace the 0 with ‘level’ by dragging a ‘level’ command from the red variables menu.
• 🖥️ The final program should resemble this setup.

• 📥 Download program onto Microbit.
• 🌡️ Press B to view temperature in Celsius.
• 🌡️🔆 Compare with household thermometer.
• 🔆🌡️ Run light sensor and temperature sensor together.

🔆🌡️ Program from light sensor + program from temperature sensor:

• 🅰️ Press button A to check light level.
• 🅱️ Press button B to view temperature.
• 📥 Download the program and try it out! Remember, don’t put your Micro: bit in the oven!