In case everyone ignored my first post, I'll paste the URL of our very successful water level meter (I've receive over 100 emails, and I know at least 20 people have made one): http://njhurst.com/electronics/watersensor/new/
It would be straightforward to build the analogue design and feed it to a 1w adc, you might also be able to use the dual counter module to replace the pic. You might want to shield the sensor from any platypuses or eels to prevent the sense signal from upsetting them. njh On Wed, 8 Oct 2008, Ziggy wrote: > A little late to the party here, but (generally speaking) I would > think that a non-contact type of solution would be the best. To that > end, perhaps an ultrasonic solution would be workable. Maxbotix has a > nice little line of ultrasonic sensors, and there was a nice write up > in June 2008 Servo magazine outlining how to use each interface > (serial, PWM, analog V) etc. > <http://www.servomagazine.com/media-files/898/Building_a_Sonar_System.pdf > > I don't know if the resolution is acceptable for your application, > but these might be worth a look. > > I was considering one of these for measuring the level in my fuel oil > tank, once I identify a hydrocarbon opaque, acoustically transparent > material to protect the sensor. Of course, this is on the *to do* list > (which means it's unknown if it will ever happen :) > > Hope this helps. > > Paul > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
