Society of Robots - Robot Forum

General Misc => Robot Videos => Topic started by: aruna1 on December 11, 2009, 08:53:44 AM

Title: my edge detecting and obstecle avpoiding robot
Post by: aruna1 on December 11, 2009, 08:53:44 AM

This is my third robot.I made this for our departments annual exhibition "Expose". This is a edge detecting and obstacle avoiding robot. It can move without falling in to pits and without hitting obstacles on its way.
I used microchip 12F675 as its brain. 6 LDRs and 6 white LEDs are used for edge detection and 2 sharp range finders are used for obstacle detection .

All your comments are appriciated.
Thanks 8)
photos:

http://img171.yfrog.com/i/dsc01959d.jpg/ (http://img171.yfrog.com/i/dsc01959d.jpg/)
http://img189.yfrog.com/i/dsc01963a.jpg/ (http://img189.yfrog.com/i/dsc01963a.jpg/)
http://img189.yfrog.com/i/dsc01964a.jpg/ (http://img189.yfrog.com/i/dsc01964a.jpg/)
http://img694.yfrog.com/i/dsc01966x.jpg/ (http://img694.yfrog.com/i/dsc01966x.jpg/)
http://img694.yfrog.com/i/dsc01967.jpg/ (http://img694.yfrog.com/i/dsc01967.jpg/)
http://img692.yfrog.com/i/dsc01969z.jpg/ (http://img692.yfrog.com/i/dsc01969z.jpg/)
http://img694.yfrog.com/i/dsc01972o.jpg/ (http://img694.yfrog.com/i/dsc01972o.jpg/)
http://img14.yfrog.com/i/dsc01974zb.jpg/ (http://img14.yfrog.com/i/dsc01974zb.jpg/)
http://img686.yfrog.com/i/dsc01975iy.jpg/ (http://img686.yfrog.com/i/dsc01975iy.jpg/)

video:

[youtube]PXp85c4nSJY[/youtube]

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: z.s.tar.gz on December 11, 2009, 12:54:19 PM

Your links are broken.

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: aruna1 on December 11, 2009, 04:16:28 PM

Quote from: z.s.tar.gz on December 11, 2009, 12:54:19 PM

Your links are broken.

fixed them  :)

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: z.s.tar.gz on December 11, 2009, 06:06:46 PM

Neato. What's on the table?

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: aruna1 on December 13, 2009, 07:57:35 PM

Quote from: z.s.tar.gz on December 11, 2009, 06:06:46 PM

Neato. What's on the table?

some obstacles like two water bottles ,a glass bowl

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: z.s.tar.gz on December 14, 2009, 03:19:31 PM

What I meant is:
what is that white coating on the table?
It looks kind of like a white plastic sheet, but it has those stripes on the sides of it...
Just wondering

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: aruna1 on December 14, 2009, 07:01:26 PM

ah its a white cloth with blue strips.

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: z.s.tar.gz on December 14, 2009, 07:08:48 PM

oh duh! (facepalm)
You can see the edge of it at the very beginning

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: aruna1 on December 14, 2009, 07:11:10 PM

 :)

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: z.s.tar.gz on December 14, 2009, 07:24:25 PM

another question: Why use visible light as opposed to IR?

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: aruna1 on December 14, 2009, 07:33:00 PM

well since this one is made as a exhibit it has to be more attractive.if i use IR people will not see any thing attractive.normally people visiting exhibitions dont know technical stuff like IR obstecle detection etc.for them what they see is what they understand.
this is how my robot became most attractive robot in the exhibtion. :) (small kids and grown ups loved to see it working evan though its not a big deal to us.)

another reason is white light reflects on most surfaces except black,so should work on most of surfaces without tuning.

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: hopslink on December 19, 2009, 05:25:21 AM

Great stuff! It is good to see a 'little' micro at work. Out of interest how did you multiplex? as you have 8 sensors and a motor drive on a micro with 6 IO pins.

Title: Re: my edge detecting and obstecle avpoiding robot
Post by: aruna1 on December 19, 2009, 05:55:44 AM

Quote from: hopslink on December 19, 2009, 05:25:21 AM

Great stuff! It is good to see a 'little' micro at work. Out of interest how did you multiplex? as you have 8 sensors and a motor drive on a micro with 6 IO pins.

no multiplexing is done.
i was working on a documentry but had to stop it because of a university asigment.i will continue documentation in few days and i will upload every thing here.cct,codes etc
:)