Descargar la librería:

https://github.com/zkemble/nRF905

Pines:

nRF905	ATmega48/88/168/328	Arduino Uno	Description
VCC	3.3V	3.3V	Power (3.3V)
CE	D7 (13)	7	Standby – High = TX/RX mode, Low = standby
TXE	B1 (15)	9	TX or RX mode – High = TX, Low = RX
PWR	B0 (14)	8	Power up – High = on, Low = off
CD	D4 (6)	4	Carrier detect – High when a signal is detected, for collision avoidance
AM	D2 (4)	2	Address Match – High when receiving a packet that has the same address as the one set for this device, optional since state is stored in register, if interrupts are used (default) then this pin must be connected
DR	D3 (5)	3	Data Ready – High when finished transmitting/High when new data received, optional since state is stored in register, if interrupts are used (default) then this pin must be connected
SO	B4 (18)	12	SPI MISO (Mega pin 50)
SI	B3 (17)	11	SPI MOSI (Mega pin 51)
SCK	B5 (19)	13	SPI SCK (Mega pin 52)
CSN	B2 (16)	10	SPI SS
GND	GND	GND	Ground

Esquema de conexión:

Divisor de voltaje:

Referencias:

nRF905 AVR/Arduino Library/Driver

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