I was wondering if I could use a IN40007 diode (or Zener diode) instead of a 3.3V voltage regulator. I plan to power the module using a 3.7V LiPo. Since the battery would be 4.2V when fully charged, my understanding is with the diode voltage drop the voltage at the Vcc pin of the nrf24l01+ module would be ~3.3V.
I've also tried using a voltage divider instead of a diode but found that this setup wasn't stable. So my question is whether using a diode over the voltage regulator would suffice?