It’s too much trouble to water the flowers when you have nothing to do? Too lazy to water? Just print out the circuit board and write the program. The idea of ​​the program is to obtain the AO or DO value for comparison. If it is low, let the motor pin output a high level. You can set the output time yourself. No technical difficulty. What are the advantages of the board? Cheap and small! If you don't know how to write, just wait until I finish the circuit board before making the program public. I'm currently working on the i project for a remote control car. You can check it out.

include "stc15.h"

include "intrins.h"

sbit motor=P3^2; sbit digital=P3^3; int i; void Delay2000ms() //@24.000MHz { unsigned char i, j, k;

_nop_();
_nop_();
i = 183;
j = 100;
k = 225;
do
{
    do
    {
        while (--k);
    } while (--j);
} while (--i);

}

void main(void ) { while(1){

if(digital==1)
{
    for (i=0;i