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How could I estimate the max number of switches that I could connect to an Arduino Uno?

I am questioning if Arduino has enough power to simultaneously operate an X number of switches with no issues.

I am using an external power adapter of 12 volt/2 amps (barrel).

Here is the hardware: https://m.hellasdigital.gr/el/products/tank-pool-water-level-liquid-sensor-float-switch

Dave Newton
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1 Answers1

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thank you a lot about your input it was very useful. My source of issues was a faulty sensor. After I changed it things are smooth now. I separated the power cables from the signal as well that is super important.

Thank you a lot about the valuable input!

Investigator
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