Following your tutorials, I made a lora node with arduino pro mini 3.3v and a 16850 battery (3.7V). I also removed the voltage regulator to decrease power consumption. I am using soil moisture sensors that drain 24 mA each one and if I use the digital pins to power them, the voltage drops below its limit and gives random values.
Another question. If I don’t have a regulator, when the battery goes down I won’t have a stable power source on the sensor, can this affect accuracy?