My experience is that practical connection is diminished , a lot. I now use two devices as standard, one for ESP-NOW and the other for TCP and link them by the serial TX/RX so they are each dedicated to one type of networking, makes a huge difference and is much cheaper if your time is worth anything.

Chances are most problems are power problems, esp if ona dev kit and from PC USB on crappy USB cable.

Even straight in power problems often occur if not careful.

return -0.000000000000016 * pow(reading,4) + 0.000000000118171 * pow(reading,3)- 0.000000301211691 * pow(reading,2)+ 0.001109019271794 * reading + 0.034143524634089;

from

https://github.com/G6EJD/ESP32-ADC-Accu ... t-function



better than 1% for the full range