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Robot Follow a route

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andreahmed:
Hi, i've seen that page
http://www.ikalogic.com/wfr.php
and i like it , but i dont know how one can make a robot that follow a predetermined route  ???? but i think he's using a wheel encoder , but it may happen that a wheel that strip on earth and let the encoder count uneeded pulses ...  there are alot of problems right ?
 ::) 

Militoy:
I am not sure I understand your question, but if you are asking about wheels slipping on soft earth, resulting in odometer errors - it can be a problem. This isn’t usually too much of an issue in a “hall-bot” though, and with the proximity sensors, the robot should be OK. There are a number of published studies on dead-reckoning errors, and how to correct them. Unfortunately, most study robots use a combination of GPS and dead-reckoning, so their methods may not help. I enjoyed reading on the link website, the way the builder improvised and used LEDs for both his emitters and detectors. It reminds me of how in Junior High, we used to saw the “roof” off of scrounged TO-3 transistors, and use them for photo-detectors.

andreahmed:
yea , im impressed of how he desinged his proximety sensor ! :) he's egyptian like me ;)

i wanna know how to follow a route i cant wait really for the final article ^^

Admin:
as militoy said, there will be a large build up of error over time. i strongly recommend against using encoders for pathfinding without other sensors to correct for error.

not sure if you saw this encoder tutorial yet . . .
http://www.societyofrobots.com/sensors_encoder.shtml

its one of my first tutorials, i really should rewrite it . . .

ikalogic:

--- Quote from: andreahmed on December 12, 2006, 06:29:49 PM ---Hi, i've seen that page
http://www.ikalogic.com/wfr.php
and i like it , but i dont know how one can make a robot that follow a predetermined route  ???? but i think he's using a wheel encoder , but it may happen that a wheel that strip on earth and let the encoder count uneeded pulses ...  there are alot of problems right ?
 ::) 

--- End quote ---


hello eveybody, this is my first post here, i am the author of the article waypoint follower robot article,

just saying that the article is finished!

http://ikalogic.com/wfr.php

hope you find it interresiting.

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