For those of you who want an extremely simple build, I've reduced it to just 5 parts: one 1-megaohm resistor (0805 SMD) one Arduino Pro Mini one Ra-01 LoRa module Male header pins Battery clips See photos.

@kiesel - the number is set to 10 and this is nothing I can change, sorry. You can PM me about which setting you need to set and I can help you.

@kiesel Beware that I believe the 6 leg chip is I2C which is not supported. Only the 3 leg SWI variant is supported.