785 B
785 B
Arduino code for nRF24L01
Wirering
| nRF24L01 | ATMega328 | ATMega2560 | ESP8266 | ||
|---|---|---|---|---|---|
| VCC | -- | 3.3V | 3.3V | 3.3V | (*1) |
| GND | -- | GND | GND | GND | |
| MISO | -- | D12 | IO50 | IO12 | |
| MOSI(*2) | -- | D11 | IO51 | IO13 | |
| SCK(*2) | -- | D13 | IO52 | IO14 | |
| CE(*2) | -- | D10 | IO10 | IO15 | (*3) |
| CSN(*2) | -- | D9 | IO9 | IO16 | (*3) |
(*1)
UNO's 3.3V output can only supply 50mA.
In addition, the output current capacity of UNO-compatible devices is smaller than that of official products.
So nRF24L01 may not work normally when supplied from the on-board 3v3.
nRF24L01+PA+LNA(nRF24L01+RFX24C01) needs 115mA.
You will need to power it from the 5V pin using a regulator.
(*2)
These pins are 5V Tolerant and can accept up to 5.25V.
(*3)
These pins can be changed in the sketch.