Search found 2 matches

by HantraxHat
Mon May 01, 2023 9:48 am
Forum: ESP32 Arduino
Topic: ESP32-S2 devkit reading full scale with 2,6v
Replies: 1
Views: 940

Re: ESP32-S2 devkit reading full scale with 2,6v

Think I found the answer. The ESP32-S2 ADC seems to saturate at 2.5V. So the range that i can use is 0-2.5V with 11db of attenuation. I tried to implement a voltage regulator a the output of the sensor with these resistor value: R1--> 3K R2 --> 10K But now i have an issue that when i attach the volt...
by HantraxHat
Thu Apr 27, 2023 1:39 pm
Forum: ESP32 Arduino
Topic: ESP32-S2 devkit reading full scale with 2,6v
Replies: 1
Views: 940

ESP32-S2 devkit reading full scale with 2,6v

Hi, I'm a new happy owner of an ESP32-S2-DevKitC-1. I'm trying to read the analog value from a soil moisture sensor but i have values that does not correspond with the voltage measuered on the sensor with a multimeter. I tried also changing the resolution and gpio (5 and 6) but no way, with 2.6v the...