Hello, I received this new module a few days ago, and the first thing I wanted to do was to measure the battery voltage, I can see next to the A0 pin 2 resistors, but I'm not sure if those are a volt divider. I made myself a volt divider using R1 a 15k resitor and R2 a 4k7 resistor, but when I con…

ESP WROOM 02 with battery socket, does it need extra resistors to monitor 4.2v?

sibianul October 7, 2017, 8:43pm 19

I placed an 100k resistor inline and now I finally have a good reading

Thanks.