RF24: Frequently Asked Questions

Where do I start?

See my blog post: Getting Started with nRF24L01+ on Arduino

Where can I buy some hardware?

iTeadStudio sells the basic 2.4G Wireless nRF24L01+ Module for $4. Such a deal!
MDfly.com sells the same unit, 2.4Ghz Wireless nRF24L01+ Transceiver Module for $6.95, but it ships from the US so it gets there a lot faster. Great place to get a few units and get started quickly.
MDfly.com also has the nRF24L01 2.4GHz Transceiver Module w/ Power Amplifier for $13.95, which increases range dramatically and uses a chip antenna
MDfly.com also has the 2.4GHz Transceiver Module w/ Power Amplifier with an external antenna for $19.95

What is the range of these units?

Here are some results from measurements I have taken, using the basic $4 iTeadStudio units. I recommend that everyone take their own measurements in their particular circumstances.

non-plus unit, 2MBps (worst case), 41+ ft line of sight indoors, immediate dropoff with any deviation from LOS. (41 ft is as far as I can go in my house without turning a corner)
Plus unit, 250kbps (best case), 46 ft around two corners indoors, 49 ft around one corner. More importantly, at 250k, packet loss is almost negligible through almost all of that range.
Both units at 1MBps, plus unit gets about 10% range improvement over non-plus in almost all situations.

What should I do if I find a problem?

Please open an issue on github if you find any problems using it with any version of Arduino or Maple.

What is the RAM footprint of this library?

16 bytes. A single radio object consumes 16 bytes of RAM, and the library does not use any other RAM statically.

Why are the examples in the 'tests' directory failing?

The sketches in the 'tests' directory are not for general use. Please use the examples in the 'examples' directory instead.

The 'tests' directory is only for people making changes to the library to ensure that their changes do not break anything.