How to use REYAX RYLR890/RYLR896 LoRa module with Arduino

Had to switch to 3.3V MCU's but we got it working!!

Reyax LoRa modules: https://www.ebay.com/itm/REYAXRYLR89...

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FAQ:
Me: Paul, 49 from USA
Education: United States Navy, University of California at San Diego B.S. E.E., University of Pittsburgh M.S. E.E.
Experience: United States Navy STS, Bayer Intnl Process Engineer, C.C.A.C AP of EE
Current: Retired
Health: BAD (Congestive Heart Failure)
Hobbies: Electronics, flying, amateur radio, music (classic rock)

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