Homemade "heart-shaped" microcontroller breathing light

The so-called "breathing light" is to control the flashing process of the LED light through a program, which has a rhythm like breathing and a gradual brightness change process.

First, here is a rendering:

This picture is a bit big...

This is what it looks like without any decoration, but after some simple decoration, it becomes something super cute.

Production process:

 1 //******************************

 2 // 51 MCU simulates breathing light

 3 // 2012.9.23

 4 // menglei

 5 // p0.0 is connected to an LED light, state 0 is on

 6 //******************************

 7 

 8 

 9 #include

10 #define N 2 //Brightness and darkness rate

11 #define T 800 //PWM period

12 #define T1 1400

13 #define T2 900

14 //sbit led0=P0^0;

15 //======================

16 void pwm(int x)

17 {

18 while(x--);

19 }

20 //======================

twenty one 

22 void flash1(void){

23 int t = 0;

24 char f = 0;

25 int count = 5; //5 times, the number of times each function is executed

26 while(1){

27 P0 = 0x00;

28 pwm(t); //Toff, light time

29 //led0=1;

30 P0 = 0xff;

31 pwm(T-t+100); //Ton, dark time

32 if(!f) t+=N+1; //The light rate is fast, simulating breathing

33 else t-=N; // dark rate is slower

34 if(t>T) {f=1;t=T;} //When the maximum value is exceeded, the maximum value is returned and the flag is dark.

35 if(t<0) {f=0;t=0;}//When the minimum value is exceeded, the minimum value is returned and the flag is lit

36 // count--;

37 }

38 }

39 void main()

40 {

41  

42 while(1)

43 {

44 flash1();

45 } 

46 }

There are not many programs, but the production of the circuit is indeed very time-consuming and brain-consuming, because you have to consider the routing of each line and can't make the line too complicated

This is the middle part, like a CRT TV, hahahaha

front:

The wiring during debugging: (disgusting)

Final production: