Difference between revisions of "Line follower"

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== Bill of materials ==
[[Image:Line_follower_view.jpg|500px|right]]
* 1 L293D motor driver
A line follower built for as part of an electronics course, ELE103 at UiA. Design and construction is done from scratch and uses only analog sensors to direct itself around course made of black tape.
* 5 QRD1114 IR LED and phototransistor package
 
** '''Or''', 5 LED red
Uses elements from analog sensing, digital logic, and driver circuits.
*** Phototransistor
 
* 1 BC546B BJT transistor
* [http://www.youtube.com/watch?v=VlxQkYb_h7w Video of line follower in action] - Youtube video
* 2 GM8 motor and wheel kits
 
* 1 Circuitboard
== Outline ==
* 1 9v battery connector
The project had the following outline:
* 1 LM2937 5v voltage regulator
 
** '''Or''',7805 5v voltage regulator
* An autonomous unit following a dark line on a bright background
* 2 MC14001 Quad OR-gates
* Logic 1 (5V) when detector is over line, otherwise logic 0 (0V), CMOS technology
* 1 MC14xxx Hex NOT-inverters
* Motors controlled by driver circuit
* 1 1N4148 diode small signal
* Turn off when no line under detectors
* Steering right/left accomplished in 3 phases; straight ahead, 5 degree, and 10 degree
* Powered by a battery power-source
 
== Report ==
Below is the corresponding report and further details. It's in norwegian but it should be possible to translate it using some online service.
 
* [http://beta.ivancover.com/electronics/ele103_logisk_krets_for_linjefoelger.pdf Line Follower report May 2010] - In norwegian, PDF
 
== Video ==
The video below shows how the line follower works.
 
<html><object width="640" height="385"><param name="movie" value="http://www.youtube-nocookie.com/v/VlxQkYb_h7w?fs=1&amp;hl=en_US&amp;rel=0"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube-nocookie.com/v/VlxQkYb_h7w?fs=1&amp;hl=en_US&amp;rel=0" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385"></embed></object></html>
 
== Photo gallery ==
 
<gallery>
Image:line_follower_01.jpg
Image:line_follower_02.jpg
Image:line_follower_03.jpg
Image:line_follower_04.jpg
Image:line_follower_05.jpg
Image:line_follower_06.jpg
Image:line_follower_07.jpg
Image:line_follower_08.jpg
Image:line_follower_09.jpg
Image:line_follower_10.jpg
Image:line_follower_11.jpg
Image:line_follower_12.jpg
Image:line_follower_13.jpg
Image:line_follower_14.jpg
Image:line_follower_15.jpg
Image:line_follower_16.jpg
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Image:line_follower_18.jpg
Image:line_follower_19.jpg
Image:line_follower_21.jpg
</gallery>

Revision as of 01:13, 13 February 2013

Line follower view.jpg

A line follower built for as part of an electronics course, ELE103 at UiA. Design and construction is done from scratch and uses only analog sensors to direct itself around course made of black tape.

Uses elements from analog sensing, digital logic, and driver circuits.

Outline

The project had the following outline:

  • An autonomous unit following a dark line on a bright background
  • Logic 1 (5V) when detector is over line, otherwise logic 0 (0V), CMOS technology
  • Motors controlled by driver circuit
  • Turn off when no line under detectors
  • Steering right/left accomplished in 3 phases; straight ahead, 5 degree, and 10 degree
  • Powered by a battery power-source

Report

Below is the corresponding report and further details. It's in norwegian but it should be possible to translate it using some online service.

Video

The video below shows how the line follower works.

Photo gallery