📄 line follower robot.htm
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<CENTER><B><FONT face=AngsanaUPC><FONT color=#000099><FONT size=+4>Line Follower
ROBOT</FONT></FONT></FONT></B> <BR><B><FONT color=#660000><FONT size=+1>Plermjai
Inchuay, <A
href="mailto:plermjai@loxinfo.co.th">plermjai@loxinfo.co.th</A></FONT></FONT></B></CENTER>
<BLOCKQUOTE><B><FONT face="Times New Roman,Times"><FONT color=#660000>Award
winner from VingPeaw Competition 2543, the robot built with 2051, L293D, and
four IR sensors. Simple circuit and platform, quick tracking and
easy-understand program using C language.</FONT></FONT></B> <BR>
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<BLOCKQUOTE>I designed my Robot, which use two motors control rear
wheels and the single front wheel is free. It has 4-infrared sensors on the
bottom for detect black tracking tape, when the sensors detected black color,
output of comparator, LM324 is low logic and the other the output is
high.
<P>Microcontrollor AT89C2051 and H-Bridge driver L293D were used to
control direction and speed of motor. <BR><IMG height=533
src="Line Follower Robot.files/Pbotcircuit.gif" width=541>
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<P><B><FONT color=#3333ff>Fig 1. </FONT><FONT color=#000000>Circuit diagram of
my Robot.</FONT></B></CENTER></P></BLOCKQUOTE>
<CENTER><IMG height=795 src="Line Follower Robot.files/IRcircuit.gif" width=372>
<BR><B><FONT color=#3333ff>Fig 2. </FONT>Circuit diagram of Infrared sensors and
comparators.</B> <BR> <BR>
<P><IMG height=193 src="Line Follower Robot.files/sensors.gif" width=444>
<BR><B><FONT color=#3333ff>Fig 4.</FONT> Position of sensors, left
hand side is side view and right hand side is top view.</B></CENTER>
<BLOCKQUOTE><B><FONT face="Times New Roman,Times"><FONT
size=+1>Software</FONT></FONT></B>
<P><FONT color=#000000>Software for write to AT89C2051 is<B> <A
href="http://www.kmitl.ac.th/~kswichit/LFrobot/robot1.hex">robot1.hex</A></B></FONT>
,which was written by C-language ,the source code is<B> <A
href="http://www.kmitl.ac.th/~kswichit/LFrobot/robot1.c">robot1.c</A></B>compiled
by using MC51 in TINY model with my start up code<B> <A
href="http://www.kmitl.ac.th/~kswichit/LFrobot/robot.asm">robot.asm</A></B> .
<P><B><FONT face="Times New Roman,Times"><FONT size=+1>MPEG
files</FONT></FONT></B>
<P><FONT color=#000000>Sample of competition between 2051 and 68HC11.</FONT>
<BLOCKQUOTE>
<LI><B><FONT face="Times New Roman,Times"><FONT size=+1><A
href="http://www.kmitl.ac.th/~kswichit/LFrobot/movie1.mpg">movie1.mpg</A>
(1,303kB)</FONT></FONT></B>
<LI><B><FONT face="Times New Roman,Times"><FONT size=+1><A
href="http://www.kmitl.ac.th/~kswichit/LFrobot/movie2.mpg">movie2.mpg</A>
(373kB)</FONT></FONT></B> </LI></BLOCKQUOTE>
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<P><A href="http://chaokhun.kmitl.ac.th/~kswichit"><IMG height=48
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