Richard why do we need to 5th connection? i See there is a DIO pin.
EDIT POST: ok found that here:
https://learn.adafruit.com/adafruit-...akouts/pinouts
G0 - the radio's "GPIO 0" pin, also known as the IRQ pin, used for interrupt request notification from the radio to the microcontroller, 3.3V logic level
I still do not fully understand it but will be the reason.
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