GPIO read float switch fluctuations during transition

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Joined: 30 Aug 2019, 09:24

GPIO read float switch fluctuations during transition

#1 Post by tgear » 30 Aug 2019, 09:33


I have built a simple water tank level notification project using 4 water float switches.
Also, when the level is low it turns off my water pump so the automatic watering stops and I can water manually whatever has the most needs.

My problem is that as the water is not still, the float switch sends open/close very frequently during the transition of the water level (you can see below).

I want to verify 3 readings of the same state with a 30" second delay between the readings and then send the reading to domoticz.
Is it possible?

Thank you!
2019-08-29 08:06:09 Off
2019-08-29 08:06:01 On
2019-08-29 08:05:37 Off
2019-08-29 08:05:27 Off
2019-08-29 08:05:27 On
2019-08-29 08:05:20 On
2019-08-29 08:05:01 Off
2019-08-29 08:04:46 On
2019-08-29 08:04:43 Off

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Re: GPIO read float switch fluctuations during transition

#2 Post by grovkillen » 30 Aug 2019, 11:45

Yep using rules you may create a filter function. Read more here: ... Rules.html
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