I have an ESP32 and a couple 5v servos, 5v fans and a 5v water pump.
I have the fan and water pump connected to a relay which is connected to 4 AA batteries (for a total of 6v).
Would it be okay if I connect the 5v servos to the set of 4 AA batteries as well? I can't imagine the extra 1v would be super bad. Or would it be better connecting the servos to the 5v of the ESP32?
Also, can I power the ESP32 with another set of 4 AA batteries? I was going to solder it to a usb cable and use that to connect to the ESP32. I was reading around that the ESP32 has a regulator of up to 12v. If that's the case, I should be able to use a 9v if I solder the power and ground to a usb cable, right?