INTRODUCTION
场景图
In daily life, it is often seen that a fire broke out without any precaution. It will cause great economic and human loss. So how can we avoid this situation? Right, install a flame sensor, a warning light, a speaker and a fan in those places that easily break out a fire. When the flame sensor detects a fire, the speaker and the warning light will alarm people, the fan will quickly to put out the fire.
So in this project, you will learn how to use a flame sensor, a passive buzzer module, a LED module and a motor module to simulate the fire alarm system.
PARTS NEEDED
You will need the following parts:
- Micro:bit main board*1
- Osoyoo Expansion Board*1
- USB Cable*1
- Red LED Module*1
- Motor Module *1
- Flame Sensor*1
- Passive Buzzer Module*1
- Jumper wires
Hardware Hookup
Ready to start hooking everything up? Check out the wiring diagram and hookup table below to see how everything is connected.
接线实物图/表格
火焰传感器接p2
led传感器接P1
无源蜂鸣器接p0
电机模块接P3
Insert micro:bit into the edge connector of the expansion board.
Note：micro:bit will always stay attached to the expansion board in the following sessions.
PROGRAM
If you are not familiar to make code, don’t worry. Firstly, you can enter this link:https://makecode.microbit.org/reference to know more about microbit blocks.
Then you can directly enter the https://makecode.microbit.org/ to edit your project program. Below is an example code we have done for you.
Example Result
Done wiring and powered up, send the code to MICROBIT. When flame sensor detects the fire nearby, the buzzer module will sound immediately, the LED will light up and the fan will turn. If no fire detected,their states are: buzzer will not sound, LED will remain extinguished, fan will not rotate.
实验结果图/视频
Timely and effective fire alarm can reduce property losses and ensure personal safety. Everyone of us should learn to protect ourselves and family members when confronted with fire alarm.
