ESP32 Forum

Posted: **Thu Jul 22, 2021 12:01 pm**

Hello,
I am currently working on the wiring diagram for restart, HIGH button and interrupt wind speed measurement. For those buttons, a 10K resistor together with a 100nF capacitor is enough. For wind speeds I will use a resistance lower than 1K. I want to ask if I'm right. I'm basically doing this for the first time.
I will be very happy for help from skillful craftsmen.

: schema.jpg (32.53 KiB) Viewed 2510 times

But what I find out is that the parallel connection of the capacitor with the button is wrong. The capacitor is shorted. So which scheme will be correct?
THIS?

: schematic_new.jpg (47.98 KiB) Viewed 2510 times

Posted: **Thu Jul 29, 2021 1:56 am**

Hm, I initially thought the cap is 100nF, like the other three, which makes sense for debouncing or getting rid of HF crap... but it's 5uF. That makes it a lowpass filter that probably smoothes all the pulses from the anemometer into nothing.

ESP32 Forum

Button connection and wind speed measurement (pullUP or pullDOWN)

Button connection and wind speed measurement (pullUP or pullDOWN)

Re: Button connection and wind speed measurement (pullUP or pullDOWN)