Society of Robots - Robot Forum

Software => Software => Topic started by: dellagd on February 11, 2010, 04:25:36 PM

Title: 10 cm sharp ir
Post by: dellagd on February 11, 2010, 04:25:36 PM
ok guys, a few questions.
I found this, which I think would be good for a wall-following bot. http://www.pololu.com/catalog/product/1134 (http://www.pololu.com/catalog/product/1134)
I think 4 inches would be enough, or should I get the 10 inch one. also, do I need a speciaal cable to connect it?
would it be a good investment to start buying headers and a crimper? all help would be appreciated
Title: Re: 10 cm sharp ir
Post by: waltr on February 11, 2010, 06:33:29 PM
That's a nice small sensor to use instead of bump switches. It has a on/off (digital) output that can be used for wall following.
Title: Re: 10 cm sharp ir
Post by: richiereynolds on February 11, 2010, 06:48:31 PM
s that the 4 to 10cm digital one? If so, it has a very useful led built onto the back that lights up when it detects something. Nice!
Title: Re: 10 cm sharp ir
Post by: dellagd on February 11, 2010, 08:47:33 PM
ugg I just realized.. its digital! *facepalm* Duh! digital-not good for detecting distances, which are needed for following a wall. whell, I guess I'll just have to spend the extra $5 and get this one http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=425-2046-ND (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=425-2046-ND)
which I believe is like this one
http://www.sparkfun.com/commerce/product_info.php?products_id=242 (http://www.sparkfun.com/commerce/product_info.php?products_id=242)
Title: Re: 10 cm sharp ir
Post by: Webbot on February 11, 2010, 09:21:24 PM
Or look at WebbotLib to see which ones are supported and what distance ranges they cover.
Title: Re: 10 cm sharp ir
Post by: Admin on February 16, 2010, 12:14:16 AM
Quote from: dellagd on February 11, 2010, 08:47:33 PM
ugg I just realized.. its digital! *facepalm* Duh! digital-not good for detecting distances, which are needed for following a wall. whell, I guess I'll just have to spend the extra $5 and get this one http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=425-2046-ND (http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=425-2046-ND)
which I believe is like this one
http://www.sparkfun.com/commerce/product_info.php?products_id=242 (http://www.sparkfun.com/commerce/product_info.php?products_id=242)
Haha yea I was about to face-palm you about that, too :P

Digital is cheaper, but analog gives you so many more capabilities for your robot. Analog is the way to go.

Make sure you get the 3-wire connector that goes with it, otherwise its a huge hassle to wire up. Some stores sell it without the connector to make it appear cheaper.