Dme

[flotulopex]

Thanks BrianT,

It didn't know that these devices wouldn't use the laser to do the measurement.

Let's find the ultrasonic sensors then...

[flotulopex]

Hello,

I'm looking now for ultrasonic distance sensors. Speed of Sound is far more in a PIC's capacity range than "Light Speed" ( Alain).

My search by DIGIKEY, DISTRELEC, FARNELL, REICHELT, CONRAD and lots of suppliers one can find in the internet, but I'm unsuccessfull.

I found ultrasonic sensors for distances up to 37ft (11 meters) which is almost okay but their price is high (> $500.-!!!).

Does anyone have a suggestion where I could find those elements?

Is there another "electronic" way to measure 1 to 10 meters distances?

[BrianT]

http://www.acroname.com/robotics/parts/c_Sensors.html
Devantech
Parallax

HTH
BrianT

[JD123]

For giggles and grins...

Light travels at about 1 foot per nano second.

Kick a PIC at say 50mhz (skimask says it's "ok")

Tcy is 1/4 clocking speed or 12.5 mips or 80 nano seconds.

One Tcy = 80 feet or 40 feet out and back round trip, so 40 feet would be the step resolution using time counting.

Now, clock that PIC at 4 Gigs and you can be down to 1 foot resolutions (just before that billionth of second when the PIC releases its magic smoke).

At 50mhz, it could be interesting to see just how high that airplane is flying (NOT!), give or take 40 feet. Kids, don't try this at home. We are professionals.

[flotulopex]

Thanks BrianT,

Your link is great, especially that one:http://www.acroname.com/robotics/parts/R11-6500.html.

As almost always, particular modules and parts exist but finding the correct wording for a good web search is sometimes the most difficult thing to do - Ranging Module was the key.

I already ordered one part - getting ready to play with it