I was trying to get a steady 3.3 V to run my nrf24l01+ pa lna so some people in this forum recommended me to buy a buck converter. I bought this one:
I use 9v as IN and I measure with a multimeter and I get around 3.3V at the output after spinning the tripod to the right position.
Ok, so I connected my nrf24l01+ to this buck converter and it still does not work good, actually it works worse when compared to using the 3.3 V pin from arduino to power it.
Why? Even using this buck converter should I use decoupling capacitors on + and - of my nrf24l01?