在这个项目中,将使用蓝牙网络构建家庭照明控制系统。在这个项目中,我们使用蓝牙模块HC-05,Arduino设备,4通道继电器模块等。
在这个项目中,使用了四个主要组件:Android智能手机蓝牙应用程序,蓝牙收发器,Arduino设备和4通道继电器模块。
Android应用程序通过单击“开启”按钮将串行数据发送到连接的蓝牙模块HC-05。蓝牙设备从应用程序接收数据并通过蓝牙模块的TX引脚发送到Arduino的RX引脚。Arduino设备读取输入数据并根据其中上传的程序对其进行处理,并将输出生成到 4 通道继电器模块。
当蓝牙应用程序的按钮打开时,它将家庭指示灯设置为ON,当蓝牙应用程序的按钮关闭时,它将家庭指示灯设置为OFF。
使用带有Android应用程序的蓝牙模块,4通道继电器模块编写Arduino程序来控制家庭照明。
String inputs; #define relay1 2 //connect relay1 to pin 9 #define relay2 3 //connect relay2 to pin 8 #define relay3 4 //connect relay3 to pin 7 #define relay4 5 //connect relay4 to pin 6 #define relay5 6 //connect relay5 to pin 5 #define relay6 7 //connect relay6 to pin 4 #define relay7 8 //connect relay7 to pin 3 #define relay8 9 //connect relay8 to pin 2 void setup(){ Serial.begin(9600); //set rate for communicating with phone pinMode(relay1, OUTPUT); //set relay1 as an output pinMode(relay2, OUTPUT); //set relay2 as an output pinMode(relay3, OUTPUT); //set relay1 as an output pinMode(relay4, OUTPUT); //set relay2 as an output pinMode(relay5, OUTPUT); //set relay1 as an output pinMode(relay6, OUTPUT); //set relay2 as an output pinMode(relay7, OUTPUT); //set relay1 as an output pinMode(relay8, OUTPUT); //set relay2 as an output digitalWrite(relay1, LOW); //switch relay1 off digitalWrite(relay2, LOW); //switch relay2 off digitalWrite(relay3, LOW); //switch relay1 off digitalWrite(relay4, LOW); //switch relay2 off digitalWrite(relay5, LOW); //switch relay1 off digitalWrite(relay6, LOW); //switch relay2 off digitalWrite(relay7, LOW); //switch relay1 off digitalWrite(relay8, LOW); //switch relay2 off } void loop(){ while(Serial.available()){ //check if there are available bytes to read delay(10); //delay to make it stable char c = Serial.read(); //conduct a serial read if (c == '#'){ break; //stop the loop once # is detected after a word } inputs += c; //means inputs = inputs + c } if (inputs.length() >0){ Serial.println(inputs); if(inputs == "A"){ digitalWrite(relay1, LOW); } else if(inputs == "a"){ digitalWrite(relay1, HIGH); } else if(inputs == "B"){ digitalWrite(relay2, LOW); } else if(inputs == "b"){ digitalWrite(relay2, HIGH); } else if(inputs == "C"){ digitalWrite(relay3, LOW); } else if(inputs == "c"){ digitalWrite(relay3, HIGH); } else if(inputs == "D"){ digitalWrite(relay4, LOW); } else if(inputs == "d"){ digitalWrite(relay4, HIGH); } else if(inputs == "E"){ digitalWrite(relay5, LOW); } else if(inputs == "e"){ digitalWrite(relay5, HIGH); } else if(inputs == "F"){ digitalWrite(relay6, LOW); } else if(inputs == "f"){ digitalWrite(relay6, HIGH); } else if(inputs == "G"){ digitalWrite(relay7, LOW); } else if(inputs == "g"){ digitalWrite(relay7, HIGH); } else if(inputs == "H"){ digitalWrite(relay8, LOW); } else if(inputs == "h"){ digitalWrite(relay8, HIGH); } inputs=""; } }
使用Arduino USB线编译并将代码上传到Arduino设备。上传代码时不要将其他设备与Arduino连接。
Bluetooth Module HC-05 Arduino UNO RX --------------------------------> TX TX --------------------------------> RX GND -----------------------------> GND 5V --------------------------------> 3.3V 4 Channel Relay Module Arduino UNO GND ------------------------------> GND IN1 --------------------------------> Pin 9 IN2 --------------------------------> Pin 8 IN3 --------------------------------> Pin 7 IN4 --------------------------------> Pin 6 VCC --------------------------------> 5V
继电器模块,灯泡和输入电源之间的连接:
以下是Android应用程序的Arduino蓝牙控制器的操作界面 -
输出结果: