#include<reg51.h>
// LCD Pin Definitions //
Sbit rs = P3^6;
Sbit rw = P3^5;
Sbit en = P3^4;
#define dataport P2
//////////////////////
// PIR SENSOR INPUT //
Sbit pir = P1^0;
/////////////////////
#define output P3 //output port 8051 -> ULN2003A Input
unsigned char fdataval [8] = {0x01,0x02,0x04,0x08}; //unipolar
stepper motor
unsigned char rdataval[8] = {0x08,0x04,0x02,0x01}; //unipolar stepper
motor
ints,k,z,i;
void delay_ms(unsigne
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