User manual

Robotics experiment with PIC microcontroller l 77
Summary
The heart of line following robot operation are 3 factors. First, the sensor’s perfor-
mance. Second, sensor’s installation and Third, the control software. Sometimes the robot
need more sensors to detect the complex line such as 3 cross line, intersection line, etc.
See the Figure A9-1.
About the installation Infrared reflector to detect the line, the distance between
both sensors is important. The suitable space improves the detection. If the sensor is near
the line more, the robot will detect the line many times. It causes the robot movement to
swing from left to right similar to a snake movement. See the Figure A9-2. It means the
speed of movement reduce.
(A)
Figue A9-2 : The result of installation line detector.
(A) Install the sensor near over. It cause the robot moves swing.
(B) Installation both sensors far from them and line. If good enough,
they help the robot to move following the line better.
(B)
Figure A9-1 : Add more line tracking sensors to detect the complex line.
INNOVATIVE EXPERIMENT