Hello, I am powering an Arduino Pro Mini 5v with a Lipo battery which has a maximum voltage of 4.2v and a minimum of 3.3v. I also need to power an NRF2401n+ with .9v - 3.6v but the voltage from a fully charged lipo is too high. I know I could lower the voltage with a diode, led or a resistor network but I was wondering which of these is most efficient?
Also, wouldn't using a resistor network limit the max current the NRF2401 would use?
Also, I have not seen any problems powering an Arduino pro mini 5v with 3.3v but does this cause any problems or damage the Arduino?
If anyone has any ideas, please let me know :)