How to power nRF24L01+ (3.3v) from Arduino Nano (5v)?

Question

Arduino

If you power the Arduino Nano from an external source, then it does not give out 3.3v, only 5v, through which you can power the nRF24L01 + as cheaply and simply as possible (I'm a beginner), of the options found, this is a voltage regulator, but as I understand it, you can’t just take and plug in the part, strapping is needed. Or a voltage divider on resistors, in my opinion it’s easier, you only need 2 resistors, but I’m not sure if this option is suitable for the current situation.
I personally like option 2 (because it's easier) if it works, maybe someone has a circuit with calculated resistors for this case?
Thanks in advance.

Answer 1

About voltage dividers, in the power circuits of something more complicated than LEDs, it is better to forget right away.
If you need to go fast and don't need to save every milliamp of the power supply, then the simplest option is to use a linear voltage regulator like the 7803/78L03. Tying as such is not required for them, except that it is desirable to put it in parallel with its input and output through the capacitor, about 0.1 ... 0.47 microfarads.

Answer 2

1. Read for starters Horowitz and Hill, as well as Tietze and Schenck.
2. Only after completing step 1, do electronics.
3. Then the difference between switching and linear stabilizers will be clear and it will become clear which of them in this case is more correct to choose.

Answer 3

If you just need to solve a problem without going into details - use ready-made pulse modules like these - chipster.ru/catalog/arduino-and-modules/supply-modules
On ebay, prices are certainly nicer and there is more variety (sizes, etc.), but will have to wait.
See what you want to achieve.
Of the simplest and uneconomical options - the use of a zener diode (aka zener diode) for the desired voltage.
If you want to seriously get confused by electronics, then before Horowitz and Hill, I recommend reading all the same Sweren.
PS For my experiments, I took several of these power modules for breadboards - www.ebay.com/itm/131224325489?_trksid=p2060778.m27...