Society of Robots - Robot Forum

General Misc => Robot Videos => Topic started by: richiereynolds on March 05, 2010, 04:41:02 AM

Title: Edge and obstacle detection on a small table
Post by: richiereynolds on March 05, 2010, 04:41:02 AM
Tinged with danger ...

[youtube]Sj2SRHVrh5s[/youtube]
Title: Re: Edge and obstacle detection on a small table
Post by: aruna1 on March 12, 2010, 12:15:34 PM
Hi,good work
i did some thing similar sometimes back,(but wasn't advanced as yours)

http://www.societyofrobots.com/robotforum/index.php?topic=9792.0 (http://www.societyofrobots.com/robotforum/index.php?topic=9792.0)
Title: Re: Edge and obstacle detection on a small table
Post by: richiereynolds on March 15, 2010, 04:37:44 PM
That's excellent, love the lights, looks like a formula 1 car in the dark, just a bit slower  :)
Title: Re: Edge and obstacle detection on a small table
Post by: amadord on March 16, 2010, 02:57:39 PM
You just pointed the photoresistors to the bottom  that way it will detect the shadows is that right?
Title: Re: Edge and obstacle detection on a small table
Post by: richiereynolds on March 16, 2010, 06:34:00 PM
I did do it like that originally but then it depended on the colour of the table and it could be easily fooled by a window on one side of the room. You can get round it with a bit of calibration but it's still a bit haphazard and environment dependent.
In the end I used 2 short range digital IR scanners pointed down, when they point off the end of the table they don't detect anything.
Title: Re: Edge and obstacle detection on a small table
Post by: aruna1 on March 16, 2010, 06:56:53 PM
i guess i set pwm to about 40% when filming the video