nRF24-1 module pinouts

[last updated: 2019-09-29]
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hardware configured as per details listed in program:

pin connections

• switch inputs (switched to ground) on D3 & D4
• role_pin input (A4) not used.
  This was a device used by maniacbug to hardware configure whether a node was a sender or receiver,
  but I am defining that in software.
• LED's connected from gnd to pins D7 & D8
• nRF24 pin 1 to gnd
• nRF24 pin 2 to 3.3vDC on Arduino
• nRF24 pin 3 CE to D9
• nRF24 pin 4 CSN to D10
• nRF24 pin 5 SCK to D13
• nRF24 pin 6 SPI MOSI to D11
• nRF24 pin 7 SPI MISO to D12