Program on microcontroller

I have finished the programming part.

#include <avr/io.h>
#include <util/delay.h>

//Simple Wait Function
void Wait()
{
   uint8_t i;
   for(i=0;i<250;i++)
   {
      _delay_loop_2(0);
   }

}

void main(){
      DDRC = 0x00;         // Configure Port C as input port
    PORTC = 0xFF;         //enable internal pull-up
    DDRD = 0xF0;          // Configure Port D as input port
    PORTD = 0xFF;         //enable internal pull-up

    while(1){
        if(PINC==0xfe){                //pull key 1
            PORTD|=_BV(7);            //relay on
        }
        else if(PINC==0xfd){            //pull key 2
            PORTD&=~_BV(7);            //relay off
        }
        else{
            if((PIND & 0b00000001) == 0b00000001)    //get input
                PORTD&=~_BV(7);            //relay off   
            else{
                PORTD|=_BV(7);            //relay on
                Wait();                //5 second delay
            }
    }
    }
}

I have set:
when distance sensor get the signal, the mist machine would work after 5 seconds.

To add the programming to the microcontroller , an AVR-ISP programmer is needed.
Here is a programmer for me to transfer the program from the computer to the microcontroller .

Microcontroller

 AVR-ISP Programmer