Hello everyone,
Looking in the forum, i never found any answer/solution, so here i am making a request and helping you help us !
I need a water level sensor NOT a flood detector. i need to be able to measure the level of water so that when the sensor sees level of water in the pool is too low, then start the pump.
I made some research and here is what i found that :
1/ NETZHOME water level sensor - https://www.nasshk.com/wt13
-> seems cool it s in wifi but no homey app and no ifttt
I read but my brain canāt understand. I am looking for a device not an app. Of course i need a device with an app ! So i wonder how one can separate device and app.
So you want to detect when your water in the pool gets too low?
Maybe a stupid suggestion but since you asked if you can reverse the functionality of a flood sensorā¦
What if you just put the flood sensor at the desired depth in the water? It will be in alarm, and when the water gets too low the alarm will stop, so you know the water is too low.
You can use a flow āwhen the alarmā turns off to turn on your pump
Sorry, then I didnāt understand you because you have listed 3 devices for which there are no apps. It is possible to make an app request for these devicesā¦
But there is also a level sensor supported by Homey: Oilfox
EXACTLY what i thought. But how will the battery be handled ? Does it mean the device is always in alarm mode since it is designed for that (as it is just the app that says the contrary ?)
And do i have to think of a delay for which the flood sensor has to be dry before it launches alarm?
Tedās idea could work perfectly.
Or use an ordinary doorsensor (like Aqara) and solder a (non-corrosive) feeler with a lead onto the contacts of the reed (magnetic) contact.
When the two contacts are shortened by water the alarm goes off and when they get disconnected (because water level is too low) the alarm is reset.
That way you do not need to invert too.
Just make sure everything is watertight, but that cab be done easily.
And sensors are cheap (like Aqara) so you can simply replace it when needed.
I am considering to make a water level sensor based on a floater with a changing grey-scale, a small light source (LED) and a Xiaomi light-sensor. I will stick the light source and light sensor to the fixed world and put the floater with changing grey scale in the water such that it is in sight of the LED+sensor.
I plan to power the LED from the mains with a 5V adapter. The advantage should be that one has a continuous readout of the water level, so no discrete steps as you would in case of switches. And it is dead cheap