LoRa868 unresponsive on multiple Arduino boards and different code

[conor]

I have two LoRa868 modules, neither of which I can get working with Arduino Uno, or ESP32 using Arduino code.

I eventually went for the simplest example code (dump registers) from the recommended LoRa library but still had no success.

I'm using completely standard wiring as follows on the Arduino.

3V3 <> 3V3
GND <> GND
NSS <> D10
DIO0 <> D2
RESET <> D9
MISO <> D12
MOSI <> D11
SCK <> D13

Both the simple Library and RadioHead had the same result - It's always "init failed"

When I switched to a generic RFM95 module from China, it worked immediately.

Is there extra wiring or pins states required for the LoRa868 compared to those Chinese modules?

Thanks

[LubOlimex]

What LoRa868 module exactly did you get? Did you check the schematics for the pinout?

Here:

https://github.com/OLIMEX/LoRa-868-915/blob/main/HARDWARE/LoRa-Rev-B/LoRa_RevB.pdf

Did you test with the Arduino IDE library mentioned here: https://github.com/OLIMEX/LoRa-868-915/tree/main/SOFTWARE/Arduino ?

[conor]

Yes that's the schematic and the code that I used.

Exact device: https://www.olimex.com/Products/IoT/LoRa/LoRa868/open-source-hardware

LoRa868-ANT

[conor]

Any further thoughts on this? I tried again over Christmas with the two modules I bought from you. Both failed to respond. Wiring checked and re-checked. Replaced with generic RFM95 and things worked perfectly. Any suggestions for what I can try next to get them working?

[live2]

I have the same problem and have connected an external power supply, but it always brings the same error message.

UPDATE:
https://github.com/OLIMEX/LoRa-868-915/issues/1