use of 4 YFS401 flow sensors

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marktn
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use of 4 YFS401 flow sensors

#1 Post by marktn » 18 Jun 2022, 00:10

Is it possible to connect 4, YFS401 flow sensors to 1 esp?

Thanks, Mark
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Ath
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Re: use of 4 YFS401 flow sensors

#2 Post by Ath » 18 Jun 2022, 09:05

When using a recent ESPEasy version that should be possible.
You might want to use a level converter, as the VCC range for that sensor is from 5V..24V, and the ESP inputs are specified at 3.3V, but there are reports that especially the Wemos D1 mini (clones) and NodeMCU (clones) boards will handle the ~5V signal without damage. (I prefer the safe option ;))
/Ton (PayPal.me)
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marktn
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Joined: 06 Nov 2015, 19:43

Re: use of 4 YFS401 flow sensors

#3 Post by marktn » 18 Jun 2022, 11:45

Ath wrote: ↑18 Jun 2022, 09:05 When using a recent ESPEasy version that should be possible.
You might want to use a level converter, as the VCC range for that sensor is from 5V..24V, and the ESP inputs are specified at 3.3V, but there are reports that especially the Wemos D1 mini (clones) and NodeMCU (clones) boards will handle the ~5V signal without damage. (I prefer the safe option ;))
Thanks! I will do that.
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