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This is howto connect your Arduino Uno with a hoperf rfm92 / rfm95 > compatable Semtech sx1272 / sx1276.

Howto connect a hoperf rfm92 or rfm95 with a Arduino Uno?

Connect your Arduino Uno (3.3 Volt) to the pins: dio0 > 4 dio1 > 5 dio2 > 7 (n)ss > 10 mosi > 11 miso > 12 clk > 13 gnd > gnd 3.3 volt > 3.3 volt Arduino, don't connect to 5 volt! i'm warning you...

Note for the rfm95 / sx1276: You need to change some settings in the library, see issues.