I have had good results measuring liquid levels with a float on a pivoting arm. Use a - not too stiff - potentiometer (ones taken out of analog servos work well) to detect the angle(which is not linear with the liquid level and would need conversion) using a teensy slaved to you rpi.
Another option as long as you only need around 10cm of range is the vl6180x ir time of flight proximity sensor. Under $10 from digikey, works right off the pi with i2c, and there is a board already ordered from oshpark from a tindie project. ohspark.com/shared_projects/c5jqo7AU On Dec 3, 2014 12:18 PM, "Jeff Garrison" <[email protected]> wrote: > Does anyone have a water sensor that they'd be willing to sell that works > well with a RPi? I'm looking to create a small project to sense the level > of my christmas tree water level. I've looking to projects online and seen > various sensors... > > e.g. > > http://www.ebay.com/itm/Analog-Water-and-Liquid-Level-Sensor-for-Arduino-or-Raspberry-Pi-/141442350922 > > > http://www.amazon.com/exec/obidos/ASIN/B006Z968LK/savagehomeaut-20 > > The second link... i'm not sure if that is RPi friendly... (meaning just > hook it up directly) > > I wanted to get this project done before the weekend, so small 'r' me if > you have suggestions and/or have a sensor. > > Thanks, > Jeff > > > > _______________________________________________ > dorkbotpdx-blabber mailing list > [email protected] > http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber >
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