In this series of posts and the YouTube videos I will write a driver for the
NRF24L01+ by Nordic Semiconductor. This is a low cost radio transceiver
readily available from many suppliers. The image below shows the specific one
I am using, but they come in many shapes and sizes.
It has to be noted that these devices operate on 3.3V and not 5V. Some modules
sold may come with an on-board voltage regulator or power adapter. Check your
modules specifications. The NRF itself is only 5V on the SPI pins
The most important document you must have on hand along with this tutorial is
the specifications (datasheet) for the NRF24L01+ you can get it HERE be careful you do not use version 1 of the datasheet that can be found everywhere. If you google for it look for Version 2 of the datasheet which has the ACTIVATE command which is missing from version 1.
Worldwide 2.4GHz ISM band operation
126 RF channels
1MHz non-overlapping channel spacing at 1Mbps
2MHz non-overlapping channel spacing at 2Mbps
Enhanced ShockBurst (fancy word for the following features)