search

lh84 / moisture_sensor_esp12

capacitive moisture sensor with ESP8266 (Wifi), powered with 18650 battery (already tested)
Other
8 stars 3 forks source link

Question about the potentiometer #5

Open theopensourcerer opened 7 years ago

theopensourcerer commented 7 years ago

I can see two possible issues with using a potentiometer to adjust the frequency:

  1. How to reliably calibrate several sensors so they all read the same
  2. How to prevent "drift" as the potentiometer wears/moves over time

I am interested if you considered anything like this?

lh84 commented 7 years ago

Hi, I just used the poti to determine the best resistor value. I think it would be the best to use a fixed resistor after prototyping