My project involves a water tank (5 gal bucket now and maybe a large pickling barrel later) which supplies water for a pump. I have seen some liquid level sensors online but I do not want to pay $25-35 for one of these. All I need is a sensor to notify the photon when water has diminished to a certa…

could you show me a quick schematic of this setup?

======== ======= =Photon= = Water = D0----------------= Probe = GND---------------= Probe Something like this. If you made each of the probes come in at the same height on the bucket.

are you familiar with monitoring voltage from a 12V battery with a photon?

[image] nrobinson2000: Water conducts electricity Technically, it doesn't. Pure water is an insulator, and the conductivity varies wildly. Seeing as real life isn't perfect, it'll probably conduct though. That said, why not use a float switch? They're cheap, easily accessible, and simply to …

@Moors7 is correct about the conductivity of water. You might want to play around with your probes and a multimeter before getting too committed. You’d be surprised at how little clean water actually conducts.

I am making the assumption that @jonmlewis is not using pure water. A float switch would probably be a better option.

You could also use one of these distance sensors to measure the height of the water from the top of the bucket. Just keep water off the sensor via some sort of rig which shouldn’t be too hard to figure out. [image] [image] Adafruit VL53L0X Time of Flight Distance Sensor - ~30 to 1000mm T…

Liquid level sensor

General

nrobinson2000 May 22, 2017, 5:59pm 8

Not really, and you should keep that discussion on your other post.

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Liquid level sensor

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