Just use a LED to drop the voltage down, the voltage drop on most leds are around 2v (+-0.2) so that gives 3,2-2,8 from a 5v source , long leg(+) to 5v, short leg(-) to vcc on nrf.
Just use a LED to drop the voltage down, the voltage drop on most leds are around 2v (+-0.2) so that gives 3,2-2,8 from a 5v source , long leg(+) to 5v, short leg(-) to vcc on nrf.