I want a algorithm for a grid solver bot in which i have to travel through a maze and then stop at a node and blink a led.
Hello.
One of the members of this forum, Geoff, has done a similar project with a 3pi robot and documented it on his website:
tabletoprobotics.xyz/tabletop/gridnav.html
–David
Hello sir,
I have one more question.I made a program written in c language and i need some of your help.I want to know whether this program will work on ATMEGA 8 or not.I have modified an already written program.Also i want you to help me in adding a PID program with this program and a program to blink a led at selected node.
I will also be grateful if you review my program and check it for mistakes and better corrections.
Thanks
Bot.doc (25.5 KB)
It is a very simple bot with only controller and no display and buttons.
Hello. It is beyond the scope of our technical support to help review and debug your program, but maybe someone else in the community would help you out. To make it easier for them to help you, I have some suggestions. I suggest that you put some more effort into this yourself by actually trying to compile the program for the ATmega8, seeing what goes wrong, and fixing as many problems as you can. Then you can post a specific question about some step that you are stuck on. Your question should include all the code you are using, descriptions and pictures of all your connections, and a detailed description of what goes wrong. The code should be simplified as much as possible. I recommend posting your code directly in the text of your reply and surrounding it with [code ] and [/code ] tags (without the spaces inside).
–David
#include<at89x52.h>
#include<stdio.h>
/*
P0 for stepper control
P1_2 for ldr detect
*/
#define ldra P1_3
#define ldrb P1_1
#define ldrc P1_2
#define ldrd P1_4
unsigned char speed=20;
void delay()
{
unsigned char i,j;
for(i=0;i<speed;i++)
for(j=0;j<128;j++);
}
void dely(int i) //stop for 40 seconds
{
int j,k;
for(k=0;k<i;k++)
for(j=0;j<1250;j++);
}
void left(int i)
{
int k;
for(k=0;k<i;k++)
{
P0=0x11;
delay();
P0=0x33;
delay();
P0=0x22;
delay();
P0=0x66;
delay();
P0=0x44;
delay();
P0=0xCC;
delay();
P0=0x88;
delay();
P0=0x99;
delay();
}
}
void forw(int i)
{
int k;
for(k=0;k<i;k++)
{
P0=0x91;
delay();
P0=0x83;
delay();
P0=0xC2;
delay();
P0=0x46;
delay();
P0=0x64;
delay();
P0=0x2C;
delay();
P0=0x38;
delay();
P0=0x19;
delay();
}
}
void leftforwmix(int i)
{
int k;
for(k=0;k<i;k++)
{
P0=0x90;
delay();
P0=0x81;
delay();
P0=0xC0;
delay();
P0=0x43;
delay();
P0=0x60;
delay();
P0=0x22;
delay();
P0=0x30;
delay();
P0=0x16;
delay();
P0=0x90;
delay();
P0=0x84;
delay();
P0=0xC0;
delay();
P0=0x4C;
delay();
P0=0x60;
delay();
P0=0x28;
delay();
P0=0x30;
delay();
P0=0x19;
delay();
}
}
void rightforwmix(int i)
{
int k;
for(k=0;k<i;k++)
{
P0=0x09;
delay();
P0=0x91;
delay();
P0=0x03;
delay();
P0=0x82;
delay();
P0=0x06;
delay();
P0=0xC4;
delay();
P0=0x0C;
delay();
P0=0x48;
delay();
P0=0x09;
delay();
P0=0x61;
delay();
P0=0x03;
delay();
P0=0x22;
delay();
P0=0x06;
delay();
P0=0x34;
delay();
P0=0x0C;
delay();
P0=0x18;
delay();
}
}
void right(int i)
{ int k;
for(k=0;k<i;k++)
{
P0=0x88;
delay();
P0=0xCC;
delay();
P0=0x44;
delay();
P0=0x66;
delay();
P0=0x22;
delay();
P0=0x33;
delay();
P0=0x11;
delay();
P0=0x99;
delay();
}
}
void takeleft()
{
// forw(6);
right(22);
forw(20);
}
void takeroto()
{
// forw(6);
right(44);
forw(20);
}
void takeright()
{
// forw(6);
left(22);
forw(20);
}
void stop()//stop
{
while(P2_0!=0);
}
void main()
{unsigned char c,d;
int i=0,junction=0;
P0=0x00;
P1=0xFF;
P2=0xFF;
ira=1;
irb=1;
irc=1;
ird=1;
forw(13);
while(1)
{ c=P1&0x1E;
if(c==0x18)// if robot is at the center
{
c=P1&0x06;
forw(1);
}
else if(c==0x1C)// if right misalign
{
c=P1&0x06;
leftforwmix(1);
}
else if(c==0x1A)// if left misalign
{ c=P1&0x06;
rightforwmix(1);
}
else if(c==0x00)
{ junction++;
forw(10);
d=P1&0x18;
switch(junction)
{
case 2:speed=15;takeright();break;
case 4:speed=15;dely(5000);takeleft();break;
case 7:speed=15;takeright();break;
case 8:speed=15;dely(5000);break;
case 9:speed=15;takeright();break;
case 13:speed=15;takeright();break;
case 17:speed=8;P0=0x00;stop();break;
}
}
else
{
forw(1);
}
//P0=0x00;
}
}
The LED blink program is not working.I have deleted the program here in the code.can anyone give me a working led blinking code?