@DeeBeeKay found a really nice concept on the float switch, probably just a reed switch inside but an elegant solution.
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Thanks @DrJeff, that looks like a very neat solution that will be easy to install - doesn’t even need anything attached to the reservoir wall, which is a bonus because the reservoir has a rubber lining that I don’t want to pierce.
I found a local supplier of the product you linked to. Great find. Thanks so much.
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Hi,
Just finished installing 4 pressure sensors (3 water reservoirs and 1 Diesel tank) with Shelly Uni as described here (it has English captions). managed to display the default data in HA but still confused and couldn’t convert the data into cubic meters as described in my call for help here.
I totally recommend the equipment and method, but still need to implement in HA.
I am using float switches, they work great and cost next to nothing
this is my esp code for an esp32
binary_sensor:
- platform: gpio
pin:
number: GPIO 17
mode: INPUT_PULLUP
name: “water sensor”
device_class: moisture
filters:- invert
and this is the kind of float switch I use
the only problem is that some of them fail after some time, they are not all created equal, so if you need extra assurance, buy something more expensive
or you can always use 2 sensors in parallel or in series (depending on your application) as a fail safe
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What is your tank /resevoir?
So you know the level, and the cross sectional area. The volume is simply the product of the level and the area.
What is the question then?
How to apply the math in HA? and how to make the card display the correct icon? I am a beginner user into HA and got confused how to use variables, helpers, scripts, etc…
Aha ok. The math should be done in a template.
Gui programming is not so much my thing. However you can set icons from templates too.
Working on that, slowly though. thanks