① 数码管显示实时温度，保留一位小数；

② 按键实时切换摄氏度和华氏度；

③通过按键设置，设定温度上限值，当所采集的温度高于设定值时，蜂鸣器报警、电机模块直流电机转动；

④随着温度的不断升高，电机转速加快；反之亦然。

-The real-time digital display temperature, retain a decimal

The key of real-time switch degrees Celsius and fahrenheit

Through the button, set the temperature limit when the collected temperature is higher than the set value, the buzzer alarm module, motor DC motor rotation

With the temperature increasing, the motor speed is accelerated　and vice versa.