Forum Index > General > Ask an Evil Mad Scientist!
 Ultrasonic range finders
 |  Printable Version
By: Anonymous: Tinicko Griffin () on Thursday, October 11 2007 @ 04:20 AM PDT (Read 4729 times)  
Anonymous: Tinicko Griffin

We wonder have you ever played with ultrasonic range finders before, if you can please go to www.usfirst.org or http://www.usfirst.org/community/fvc/content.aspx?id=962 to see this years game, we are a first year team but within the next two years we are planning to move up to the FRC level of play.


So... what do you want to do with the range finders?


Use them for motion detection, at the vex competition we can only use the products that are listed at vexlabs.com so placing a motin detector would be easier but not allowed. If we could use the reference of 3 to 8 range finders to detect motion with a distance equation we would be able to create an autonomous program that would make our robot act as a sumo bot and attack other robots at the beginning of each match.





       
   
By: Windell (offline) on Thursday, October 11 2007 @ 10:58 AM PDT  
Windell

we can only use the products that are listed at vexlabs.com so placing a motin detector would be easier but not allowed. If we could use the reference of 3 to 8 range finders to detect motion with a distance equation we would be able to create an autonomous program that would make our robot act as a sumo bot and attack other robots at the beginning of each match.


Hmm. Very interesting. Here is my suggestion: Mount two ultrasonic range finders on rotating platforms-- either on a servo motor or on continuously rotating motors with shaft encoders. (You can go one full turn forwards and then one full turn back to avoid cable wrap-up.) That can give you stereo range-finding vision, sufficient to create an unambiguous 3D map of the world from your location. If it moves, go chase it.


Windell H. Oskay
drwho(at)evilmadscientist.com
http://www.evilmadscientist.com/

Forum Evil Scientist
Evil Scientist

Status: offline

Registered: 06/15/06
Posts: 1932
Sunnyvale, CA

Profile Email Website  
   
By: Griff (Octagon) (offline) on Thursday, October 11 2007 @ 08:55 PM PDT  
Griff (Octagon)

I like that ....... The Doctors is In!!!


Forum Apprentice
Apprentice

Status: offline

Registered: 10/11/07
Posts: 3

Profile Email    
   



 All times are PDT. The time is now 03:26 PM.
Normal Topic Normal Topic
Locked Topic Locked Topic
Sticky Topic Sticky Topic
New Post New Post
Sticky Topic W/ New Post Sticky Topic W/ New Post
Locked Topic W/ New Post Locked Topic W/ New Post
View Anonymous Posts 
Able to Post 
Filtered HTML Allowed 
Censored Content 

Evil Mad Scientist Forum Archives — Read only!

Please visit our new forums for new discussions.


DIY Hardware for Electronic Art


The Original Egg-Bot Kit


Octolively
Interactive LED kits


Meggy Jr RGB
LED matrix game
development kit.


Business-card sized
AVR target boards


Peggy 2
LED Pegboard kits

My Account






Lost your password?