NRF24L01

Overview
The nRF24L01 is a low-power and low-cost 2.4GHz transceiver ASIC produced by Nordic Semiconductors which is used in our open hardware design for our active RFID tag - http./www.openbeacon.org. We currently use it for realtime tracking of people at congresses.

See our USB based Reader Node OpenBeacon USB, the ethernet based Reader OpenBeacon Ethernet and the tag design the OpenBeacon Tag.

Also used by Blinkenlights WMCU and Blinkenlights WDIM.

Some of its features are:
 * 80 channels
 * 1Mbit or 2Mbit per second operation
 * GFSK (Gaussian Frequency Shift Keying) modulation
 * 40bit addressing
 * 6 data pipes (similar to USB endpoints)
 * 32byte TX FIFO
 * 32byte RX FIFO
 * SPI interface to the CPU