Multi-mode 51 single-chip heart-shaped water light + breathing light + buzzer music

1. Basic hardware DIY design

Circuit Hardware:

[MCU]STC89C52RC

[Peripherals]Buzzer/24 LEDs/4 corner buttons

1) Overall schematic diagram

2) PCB circuit

3) 3D_PCB

TOP layer

2. MCU Programming

1) Breathing light [simple analog PWM]

//Breathing light [PWM modulation]

while(1)

{

for(high=1;high {

P2=P1=P0=0XFF;

delay2(high);

P2=P1=P0=0X00;

low=cycle-high;

delay2(low);

}

for(low=1;low {

P2=P1=P0=0XFF;;

high=cycle-low;

delay2(high);

P2=P1=P0=0X00;

delay2(low);

}

}

2) Buzzer music

// Define the simple blue and white porcelain music score [timer generates music pulse]

// Define the simple blue and white porcelain music score [timer generates music pulse]

uchar code music[][2]={{0,4},

{0,4},{24,4},{24,4},{21,4},{19,4},{21,4},{14,8},{19,4},{21,4},{24,4},{21,4},{19,16},{0,4},{24,4},{24,4},{21,4},{19,4},{21,4},{12,8},{19,4},{21,4},{24,4},{19,4},{17,16},{0,4},{17,4},{19,4},{21,4},

{24,4},{26,4},{24,4},{22,4},{24,4},{21,4},{21,4},{19,4},{19,16},{0,4},

{17,4},{19,4},{17,4},{17,4},{19,4},{17,4},{19,4},{19,4},{21,8},{24,4},{21,4},{21,12},{0,4},{24,4},{24,4},{21,4},{19,4},{21,4},{14,8},{19,4},{21,4},{24,4},{21,4},{19,16},{0,4},{24,4},{24,4},{21,4},

{19,4},{21,4},{12,8},{19,4},{21,4},{24,4},{19,4},{17,16},{0,4},{17,4},{19,4},{21,4},{24,4},{26,4},{24,4},{22,4},{24,4},{21,4},{21,4},{19,4},{19,12},{12,4},{21,8},{19,4},{19,8},{17,16},

{0xFF,0xFF}};

//Buzzer music [Timer generates music pulse]

while(1)

{

m=music[i][0];n=music[i][1]; 

if(m==0x00)

{TR0=0;delay1(n);i++;} 

else if(m==0xFF)

{TR0=0;delay1(30);i=0;} 

else if(m==music[i+1][0]) 

{TR0=1;delay1(n);TR0=0;pause();i++;}

else

{TR0=1;delay1(n);i++;}

}

}

3) Several simple water lights

//Buzzer music [Timer generates music pulse]

void disp10() //State 10: All LEDs are turned off (3 LEDs with 8 grids are turned off counterclockwise)

{

for(i=0;i<9;i++)

{

P0=table5[i];

P2=table4[i];

P1=table4[i];

delay(100);

}

delay(300);

}

void disp11() //State 11 The 3 LEDs are lit for 8 consecutive grids and rotate clockwise

{

for(j=0;j<2;j++)

{

for(i=0;i<8;i++)

{

P0=table0[i];

P2=table1[i];

P1=table1[i];

delay(100);

}

P0=0xff; P2=0xff; P1=0xff;

for(i=0;i<8;i++)

{

P0=table0[i];

P2=table1[i];

P1=table1[i];

delay(100);

}

P0=0xff; P2=0xff; P1=0xff; 

}

}

void disp12() //3 LEDs light up intermittently for 8 grids, and then gradually light up clockwise (until all are lit)

{

for(i=0;i<8;i++)

{

P0=table2[i];

P2=table3[i];

P1=table3[i];

delay(100);

}

delay(1000);

}

void disp13() //State 13: All LEDs are turned off (3 LEDs with 8 grids of intervals start to turn off clockwise)

{

for(i=0;i<8;i++)

{

P0=table4[i];

P2=table5[i];

P1=table5[i];

delay(100);

}

delay(300);

}

void disp14() //State 14: LED turns off to full brightness (gradually lights up from P0.0, P1.0, P1.7, and P2.0)

{

for(i=0;i<8;i++)

{

P0=table2[i];

P2=table2[i];

if(i<4)

{

P1=table8[i];

}

delay(100);

}

}

void disp15() //State 15: LED turns from fully lit to fully off (gradually turns off from P0.7, P1.3, P1.4, and P2.7)

{

for(i=0;i<8;i++)

{

P0=table5[i];

P2=table5[i];

if(i<4)

{

P1=table11[i];

}

delay(100);

}

}

3. Effect display

1) Top-level diagram of the physical circuit

2) Physical circuit bottom diagram

The interior is relatively simple (*￣︶￣)

3) Overall effect diagram

Rechargeable design

Built-in lithium battery connected to lithium battery charging module [can be charged via mini-USB charging port]

Playability

Three debug buttons and one reset button are reserved

The program can be improved: Press the function key to switch modes directly without pressing reset.