New...Sonar

[Private reid2]

Hi, I have been willing to built a robot for a while now due to my boyfriend, whos doing the $50 robot have desided to join SoR.

But i have a question to do with sonar.

If i was to make a sonar bot would it have to have a bumper switch so the robot new if it had made it to the obstacle, because doesn't sonar only detect objects but doesn't know how far away the are?

[Private Reid]

omg!

you used my name!

i didn't know that you were going to join!

what is the world coming to!

Girlfriends not telling you when they are going to make a SOR user!

 

[TrickyNekro]

Hehehe,
Sounds like nice situation here mate...
If she is your girlfriend you are pretty lucky...

You see it's more possible for the man to do alike not the gf...

Cheers!!!
Lefteris

[superchiku]

lololol what a scene now thats a good girlfriend man ... u are very lucky and its nice to see that ROBOTS SPREAD LOVE or should i say SOR SPREADS LOVE

[Steve Joblin]

Man... you are one luck "couple"!

To answer your question, the answer is that sonar actually does tell you how far away the object is!  that is one of the great things about it!  What sonar module are you planning on using?

Oh yeh, almost forgot to ask.... do you have a sister   wish my wife liked robots

[AndrewM]

Sonar will tell you a distance (not 100% accurate), but it is widespread so you won't know where the object is in relations to the beam, just that it is in the "cone" someplace.  Sonar also generally has a minimum range, so sometype of bumper would be needed, whether that bumper is short range IR, or a electromechanical switch, or photodectors, etc is up to you.

[Asellith]

Haha Private Reid just became the target of envy for most of the members of SOR.

I wonder how many people go to there significant others tonight and try to get them to build a robot with them as "Quality Time"

Of course I do not have a significant other at this moment but I may have to head over to the other university in town and scope out there engineering department for girls.

[Private reid2]

ok, thanks! 

Oh yeh, almost forgot to ask.... do you have a sister   wish my wife liked robots

lol
And no I got an older brother...(unlucky)

You see it's more possible for the man to do alike not the gf...

(almost killed myself laughing...)

I wonder how many people go to there significant others tonight and try to get them to build a robot with them as "Quality Time"

LOL

[Admin]

A mechanical engineer I had dated for a long time signed up here too . . . she read every single post of mine . . .

(so be careful what you say! )

[Private Reid]

every single post! 

Every 4000 and what not posts!!! 

[Brandon121233]

About your Sonar, I use Sonar for my robot Walbot and I love it, I use the The LV-MaxSonar-EZ1 http://www.maxbotix.com/Maxbotix__Buy_Now.html#Order_EZ1 its really easy to use and it has a great range. It outputs the distance in one inch increments and the interface output formats included are pulse width output, analog voltage output, and
serial digital output. It basically does all the calculating and timing work usually necessary for you.

[Private reid2]

it's such a shame that there all so expensive...

like $22... THATS EXPENSIVE FOR ME

and it's also in American (i live in Australia!) so postage is lots and...it all adds up!

Im just not to sure...

Like to buy 4 Hitec 311 servo's is $60 EXCLUDING POSTAGE almost $80 with the postage

It's really hard for us ozzy's

[AndrewM]

Out of curiousity, why can't you buy straight from Japan?  I would imagine the prices would be cheaper, as well as the shipping.

We may have cheap electrical components in the US, but you have vegemite (and I am almost out of what I picked up on my trip in Dec)

[Private Reid]

well,

heres a deal...

you post me a few servo's and ill post you some Vegemite...

but about japan... i hadn't thought of that...

any1 know of a site?

[AndrewM]

Here's some I found in asia.  Shipping to US is pretty cheap, so I imagine shipping to australia to be cheaper.

http://www.robotstorehk.com/motors/motors.html

http://www.rt-net.jp/index.php?main_page=index&cPath=108&language=en  - make sure you tack on "&language=en" without the quotes to any page if it doesn't have it already.  I have no idea what the prices are, I didn't bother to do a conversion.

http://www.rcmart.com.tw/