Subject:
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Re: A Pet Idea ~/\~~/\¤
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 4 Jan 2003 17:25:23 GMT
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Viewed:
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899 times
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Hummmm, Henrik that was a nice idea for my two cats :)
I've allready made a modified rover that can be found here:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=24411
You can also download my modified RIS program there.
But the cats always attack the wires on it.
Your idea with an tail sensor and a tail after the roverbot was a good idea.
I'll try that.
You can get the Lego Minstorm Vision set that have a webcam and some nice
software that you even can use with your robots. I have that but the
pictures from that is not the best.
I have a Canon Ixus 300 Digital camera that I've taken the pictures seen in
the Brickshelf Gallery pages of mine. It is a bit expensive but I like the
size of the camera and the good quality pictures i get with it.
Regards
Øyvind Steinnes
http://www.brickshelf.com/cgi-bin/gallery.cgi?m=Phoenix
"Henrik Erlandsson" <e.henrik@telia.com> wrote in message
news:H878p8.FzD@lugnet.com...
> I have a cat and a dog (Welsh Terrier) and one of my goals with Lego
> Robotics is to make a Rover which is fun for my pets.
>
> I got a simple idea of how to make the Rover detect a moving object (like • a
> pet). You need RIS, build the Roverbot with the Double Bumper. Use a • decent
> program to make it go around your house without gettings stuck on • thresholds
> or in corners. (I had to modify the roverbot and changed the program so • now
> it works like a charm! I don't have a digital camera tho, so I can't show • it :()
>
> Now, put a tail on your rover. It could be two ribbed Lego tubes (for
> stiffness to avoid you running over the tail when backing up) with a 2"
> piece of string with a bell on it.
>
> Above the base of your tail, put a light sensor. If you had put it on the
> front, you would expect drastic value changes as you come nearer a light • or
> dark object. But you wouldn't know if it was a dead object or a pet.
> However, if you only look at the tail sensor values when the rover has
> travelled straight forward for at least 1-2 s, a drastic change would mean
> "moving object".
>
> You'd have to screen out irrelevant light, so put long lego bricks around
> the sensor like a 2" tube or sth. You might also have to put a light above
> the sensor (outside the tube!) and light it when you're going forward - to
> light up any objects behind the rover - this increases the range that the
> sensor can reach.
>
> A drastic change would then be a change from 25 to 30 or so.
>
> When a pet is behind the bot, it could turn around 180° and either give a
> growl & attack, or give a whistle & dispense a treat :)
>
> If I ever get hold a cheap Webcam/Digital Camera which is especially good
> for taking close-up shots of Lego pieces (:D) I guess I could give you
> pictures of it "in action". Anyone have a tip about "Cameras for Lego
> shots"? (I especially like Mario Ferrari's pictures.)
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Message is in Reply To:
 | | A Pet Idea ~/\~~/\¤
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| I have a cat and a dog (Welsh Terrier) and one of my goals with Lego Robotics is to make a Rover which is fun for my pets. I got a simple idea of how to make the Rover detect a moving object (like a pet). You need RIS, build the Roverbot with the (...) (22 years ago, 4-Jan-03, to lugnet.robotics)
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