送给爱制作，爱捣鼓的朋友们

1万 · 2018-4-13 18:27

本帖最后由一路向北lm 于 2018-6-30 13:54 编辑

喜欢制作的朋友们，一大波福利正在来临。

1.  热电偶温度控制装置仪 https://bbs.21ic.com/icview-2498530-1-1.html
2. 12单片机12864单片机简易示波器 https://bbs.21ic.com/icview-2521294-1-1.html
3.  基于 51单片机0-30V 4A数控稳压电源  https://bbs.21ic.com/icview-2521514-1-1.html
4.  基于单片机加点阵屏的滚动显示  https://bbs.21ic.com/icview-2521920-1-1.html
5.基于AVR单片机的数控频率计https://bbs.21ic.com/icview-2522734-1-1.html
6.制作多功能编程器 https://bbs.21ic.com/icview-2525080-1-1.html

持续更新中.......

1万 · 2018-4-13 18:29

本帖最后由一路向北lm 于 2018-5-3 15:51 编辑

51单片机+LCD1602+热电偶+MAX6675 温度控制装置（加了PWM输出，通过LED显示PWM输出的力度）

1万 · 2018-4-13 18:42

放代码了（2.max6675热电偶温度控制器）（详细代码工程见附件）
演示视频链接：

#include "reg52.h"
#include "lcd.h"
#include "key.h"
#include "max6675.h"

//PWM 状态指示灯
sbit LED1=P1^4;
sbit LED2=P1^5;
sbit LED3=P1^6;
sbit LED4=P1^7;

//继电器控制端
sbit RELAY=P3^2;

uint temp,save=30,save_D=30;
bit temp_flag,LED_flag,wait_flag,wait;
uchar mode,k1_value,k2_value,k3_value,i,k;

void main()
{
  LED1=1;LED2=1;LED3=1;LED4=1;       //PWM LED指示灯初始化
      RELAY=1;                      //继电器初始化
      wait_flag=1;
      LcdInit();                   //LCD1602初始化
      TMOD|=0x01;
      TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      ET0=1;
      TR0=1;
      EA=1;
                              //LCD1602液晶初始化
      LcdWriteCom(0x80);
      LcdWriteData('W');
      LcdWriteCom(0x81);
      LcdWriteData('E');
      LcdWriteCom(0x82);
      LcdWriteData('L');
      LcdWriteCom(0x83);
      LcdWriteData('C');
      LcdWriteCom(0x84);
      LcdWriteData('O');
      LcdWriteCom(0x85);
      LcdWriteData('M');
      LcdWriteCom(0x86);
      LcdWriteData('E');
      LcdWriteCom(0x87);
      LcdWriteData(':');

      LcdWriteCom(0x89);
      LcdWriteData('S');
      LcdWriteCom(0x80+10);
      LcdWriteData('Y');
      LcdWriteCom(0x80+11);
      LcdWriteData('S');
      LcdWriteCom(0x80+12);
      LcdWriteData('T');
      LcdWriteCom(0x80+13);
      LcdWriteData('E');
      LcdWriteCom(0x80+14);
      LcdWriteData('M');

      while(1)
      {
            keysan();

            switch(mode)          //模式切换
                     {
                                                                                                                     //显示模式
                              case 0:
                                                            if(temp_flag==1)
                                             {
                                                      temp_flag=0;
                                                      temp=MAX6675_ReadReg();
                                                      temp= temp<<1;
                                                      temp= temp>>4;
                                                      temp= temp/4;
                                             }
                                                                                                                                                            //温度
                                             LcdWriteCom(0x80+0x40);
                                             LcdWriteData('t');
                                             LcdWriteCom(0x80+0x40+1);
                                             LcdWriteData('e');
                                             LcdWriteCom(0x80+0x40+2);
                                             LcdWriteData('m');
                                             LcdWriteCom(0x80+0x40+3);
                                             LcdWriteData('p');
                                             LcdWriteCom(0x80+0x40+4);
                                             LcdWriteData(':');

                                             LcdWriteCom(0x80+0x40+5);
                                             LcdWriteData(temp/1000+0x30);
                                             LcdWriteCom(0x80+0x40+6);
                                             LcdWriteData(temp%1000/100+0x30);
                                             LcdWriteCom(0x80+0x40+7);
                                             LcdWriteData(temp%100/10+0x30);
                                             LcdWriteCom(0x80+0x40+8);
                                             LcdWriteData(temp%10+0x30);
                                             LcdWriteCom(0x80+0x40+9);
                                             LcdWriteData('c');
                                    break;
                                                                                                                     //设置模式
                              case 1:

                                       if(k1_value==1)
                                             {
                                                k1_value=0;
                                                      save_D+=1;
                                                      if(save_D==10000)
                                                      {
                                                      save_D=0;
                                                      }
                                             }
                                             else if(k2_value==1)
                                             {
                                                k2_value=0;
                                                      save_D-=1;
                                                      if(save_D==0)
                                                      {
                                                      save_D=9999;
                                                      }
                                             }

                                             if(k3_value==1)
                                             {
                                                k3_value=0;
                                                      save=save_D;
                                             }

                                             LcdWriteCom(0x80+0x40);
                                             LcdWriteData('t');
                                             LcdWriteCom(0x80+0x40+1);
                                             LcdWriteData('e');
                                             LcdWriteCom(0x80+0x40+2);
                                             LcdWriteData('m');
                                             LcdWriteCom(0x80+0x40+3);
                                             LcdWriteData('p');

                                             LcdWriteCom(0x80+0x40+4);
                                             LcdWriteData('H');
                                             LcdWriteCom(0x80+0x40+5);
                                             LcdWriteData(':');

                                             LcdWriteCom(0x80+0x40+6);
                                             LcdWriteData(save_D/1000+0x30);
                                             LcdWriteCom(0x80+0x40+7);
                                             LcdWriteData(save_D%1000/100+0x30);
                                             LcdWriteCom(0x80+0x40+8);
                                             LcdWriteData(save_D%100/10+0x30);
                                             LcdWriteCom(0x80+0x40+9);
                                             LcdWriteData(save_D%10+0x30);
                                             LcdWriteCom(0x80+0x40+10);
                                             LcdWriteData('c');
                                    break;
                     }
                     if(wait==1) //跳过上电不稳定区
                     {
                                                      if(temp<=save)    //温度不够  PWM控制输出
                                                      {
                                                               RELAY=0;
                                                               if(temp+20<save)    //温差大 PWM最大输出
                                                               {
                                                                     if(LED_flag==1)
                                                                              {
                                                                                       LED_flag=0;
                                                                                       k++;
                                                                                    if(k>=5)k=0;
                                                                                    switch(k)
                                                                                    {
                                                                                             case 1: LED1=0; break;
                                                                                             case 2: LED2=0; break;
                                                                                             case 3: LED3=0; break;
                                                                                             case 4: LED4=0; break;
                                                                                    }

                                                                              }
                                                                              else if(LED_flag==0)
                                                                              {
                                                                                       LED1=1;LED2=1;LED3=1;LED4=1;
                                                                              }

                                                            }
                                                               else if(temp+15<save)
                                                               {
                                                                              if(LED_flag==1)
                                                                              {
                                                                                       LED_flag=0;
                                                                                       k++;
                                                                                    if(k>=4)k=0;
                                                                                    switch(k)
                                                                                    {
                                                                                             case 1: LED1=0; break;
                                                                                             case 2: LED2=0; break;
                                                                                             case 3: LED3=0; break;
                                                                                    }

                                                                              }
                                                                              else if(LED_flag==0)
                                                                              {
                                                                                       LED1=1;LED2=1;LED3=1;
                                                                              }
                                                               }
                                                               else if(temp+10<save)
                                                               {
                                                                     if(LED_flag==1)
                                                                              {
                                                                                       LED_flag=0;
                                                                                       k++;
                                                                                    if(k>=3)k=0;
                                                                                    switch(k)
                                                                                    {
                                                                                             case 1: LED1=0; break;
                                                                                             case 2: LED2=0; break;
                                                                                    }

                                                                              }
                                                                              else if(LED_flag==0)
                                                                              {
                                                                                       LED1=1;LED2=1;
                                                                              }
                                                               }
                                                               else if((temp+5<save)|(temp<=save))
                                                               {
                                                                              if(LED_flag==1)
                                                                              {
                                                                                       LED_flag=0;
                                                                                       LED1=0;
                                                                              }
                                                                              else if(LED_flag==0)
                                                                              {
                                                                                       LED1=1;
                                                                              }
                                                               }
                                                      }
                                                      else             //温度够  PWM控停止输出
                                                      {
                                                               RELAY=1; LED1=1;LED2=1;LED3=1;LED4=1;
                                                      }


                     }
                     else if(wait==0)
   {
                        RELAY=1; LED1=1;LED2=1;LED3=1;;LED4=1;
                     }


      }
}

void time() interrupt 1
{
      uint count1,count2,t;
  TH0=(65536-50000)/256;
      TL0=(65536-50000)%256;
      count1++;count2++;
      if(count1==20)
      {
      count1=0;
      temp_flag=1;
            if(wait_flag==1)
            {
               t++;
   if(t==2)
         {
                     t=0;
         wait=1;
         }
            }
      }
  if(count2==5)
      {
      count2=0;
      LED_flag=1;
      }
}