利用薄膜键盘与舵机制作密码门锁

深藏阁楼爱情的钟 2023-07-04 08:54 42阅读 0赞

开头：由于自己买的LCD没有焊接，需要的arduino插口较多，所以没有选择LCD进行显示信息而改为电脑串口显示器窗口显示，代码纯手打，开源不易，请勿喷。  
接线：薄膜键盘的针脚是从2接到9  
舵机是10号脚  
红色led接12号  
绿色led接13号  
蜂鸣器接11号，当然可以将蜂鸣器和红色灯接到一起，但是声音不大。

#include <Keypad.h> 
    #include<Servo.h>
    const byte ROWS = 4; //4 rows
    const byte COLS = 4; //4 columns
    char passwd='1';int temp=1;
    char keys[ROWS][COLS] = { //对应自己想要打印出的字符
      { 'D','=','0','*'},
      { 'C','9','8','7'},
      { 'B','6','5','4'},
      { 'A','3','2','1'}};
    String firstNum = "";
    float password = 456;//设置默认密码
    int demo=1;//这是用来转换模式用的
    Servo myservo;
    int pos=0;//舵机旋转角度
    float result = 0.0;//结果
    char operatr = ' ';
    byte rowPins[ROWS] = { 5, 4, 3, 2}; //连接到键盘的行插脚
    byte colPins[COLS] = { 9,8, 7, 6}; //连接到键盘的列插脚
    Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );//实例化Keypad 对象
    void setup(){ 
      Serial.begin(9600);
      pinMode(11,OUTPUT);//蜂鸣器
      pinMode(12,OUTPUT);//红色led灯
      pinMode(13,OUTPUT);//绿色led灯
      digitalWrite(12,LOW);digitalWrite(13,LOW);myservo.attach(10);
    }
    void loop(){ 
      Serial.println("如忘记密码请添加微信18476618070进行修改密码。");
      Serial.println("输入密码后按'#'键以确认，按’*’键重输:");
      Serial.print("请输入密码:");
      while(1){ char key = keypad.getKey();//新建一个key 变量 用于获取键盘当前的值
      if(demo==1){ 
      	if (key != NO_KEY && (key == '1' || key == '2' || key == '3'||key == 'A' ||key == 'B' ||key == 'C' ||key == 'D'  || key == '4' || key == '5' ||key == '.' ||key == '*' || key == '6' || key == '7' || key == '8' || key == '9' || key == '0')) { 
     	 Serial.print(key);firstNum =firstNum +key;}   
     	 else if(key != NO_KEY &&(key == '='  )){ demo=2;}  }      
     	 if(demo==2)
      		{ Serial.println("");
      	if(firstNum.toFloat() == password){ Serial.println("欢迎回家！");
      	for(demo=1;demo<=3;demo++){ 
    		digitalWrite(13,HIGH);delay(200);digitalWrite(13,LOW);delay(200);}
      	for(demo=1;demo<=1;demo++)
      		{ for(pos=0;pos<=180;pos++)
     	 { myservo.write(pos);delay(5);}
     	 delay(2000);
     	 for(pos=180;pos>=0;pos--)
      		{ myservo.write(pos);delay(5);}}
      	Serial.print("请输入密码:");}
     	 else{ Serial.print("输入错误！请重新输入密码:");
     	 for(demo=1;demo<=3;demo++){ 
      		digitalWrite(12,HIGH);tone(11,2093);delay(200);digitalWrite(12,LOW);noTone(11);delay(200);}}
    	  firstNum = "";demo=1;temp=0;}   
      } }

下面是效果图：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjAyMDc4OA_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjAyMDc4OA_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjAyMDc4OA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200209211558747.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjAyMDc4OA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjAyMDc4OA_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200209211733160.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NjAyMDc4OA==,size_16,color_FFFFFF,t_70