Mobile_Controlled_Robot

 Mobile_Controlled_Robot:

Code:

#include <avr/io.h>

#define key2 0xfd
#define key4 0xfb
#define key6 0xf9
#define key8 0xf7
#define key5 0xfa

#define left 0x01
#define right 0x02
#define forward 0x03
#define reverse 0x0c
#define stop 0x00

#define key PINA
#define direction PORTC

int main(void)
{
DDRA=0xf0;
DDRC=0xff;
    while(1)
    {
PORTA=0xff;
      if(key==key2)
 direction=forward;

 else if(key==key4)
 direction=left;

 else if(key==key6)
 direction=right;

 else if(key==key8)
 direction=reverse;

 else if(key==key5)
 direction= stop;
    }
}

Circuit Diagram:

Layout: