using Sharp IR detectors

erco

erco

Senior Member
Hmmm. I don't immediately see an advantage to that layout, unless they are talking about avoiding the dead zone as discussed & shown in the previous drawing on that page. On a small bot (a few inches wide), that might make sense.

I do like these sensors, but note the viewing angle of these IR is not symmetrical: http://letsmakerobots.com/node/34185
 
R

Ravenous

Member
I used a couple like that - pointing across the front. It comes in handy for detecting collisions (providing you're moving slowly enough to detect and stop.)

I guess the problem is they're not very useful for more general navigation in those positions. OK if you can fit more though.
 
techElder

techElder

Well-known member
sharp_15.jpg

It would be important to align sensors in such a manner that the transmission from one is not received by the other. You could do this by sequencing the two sensors.
 
J

jims

Senior Member
erco said:
Hmmm. I don't immediately see an advantage to that layout, unless they are talking about avoiding the dead zone as discussed & shown in the previous drawing on that page. On a small bot (a few inches wide), that might make sense.

I do like these sensors, but note the viewing angle of these IR is not symmetrical: http://letsmakerobots.com/node/34185
Click to expand...
Thank you...erco, if you had a 6' diameter autonomous bot; how many of these sensors would you use?? and where would you place them? Jims
 
erco

erco

Senior Member
Actually I'd use just one mounted on a scanning servo. Better coverage, faster scans and fewer pins.

 
erco

erco

Senior Member
Some of the Parallax bots get carried away with 10 stationary PING))) sensors at $29 each...



Yet those same fine fellow have one of the best tutorials on scanning with a single sensor:

 
You must log in or register to reply here.
Top