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All things pertaining to wireless and RF links
By wickedpixel
#172276
I'm trying to connect this transceiver:
http://www.newegg.com/Product/Product.a ... 27191035:s

to this microcontroller:
https://www.sparkfun.com/products/12640

PIN 7 (MISO)-> PIN 14
PIN 6 (MOSI) -> PIN 16
PIN 5 (SCK) -> PIN 15
PIN 4 (CSN) -> ????
PIN 3 (CE) -> PIN 3
PIN 1 (GND) -> GND
PIN 2 (VCC)-> 3.3v voltage regulator -> VCC

Where do I connect PIN 4? According to the Pro Micro pinout, there's no SS/CS pin. Image
User avatar
By Ross Robotics
#172305
CSN (pin 4) is discussed in the NRF24L01 datasheet, starting on page 47. It can be connected to any pin as it can be set HIGH or LOW.