Sparkfun The Thing Plus expLoRaBLE TTN OTAA, looking for sketch that consistently works

craig59715
Sun, 11 Feb 2024 21:28:27 +0000
Hardware

I have a Sparkfun SAMD21 Pro RF end devices working successfully on my The Things Industries TTN services using OTAA. However, I wanted to use The Thing Plus expLoRaBLE due to its lower power consumption and slightly cheaper board, its model number is WRL-17506 and is a NM180100 SiP which includes a Semtech SX1262 LoRa module paired with the Apollo3 MCU.

I followed the the Hookup Guide provided by Sparkfun for this device, downloaded and installed the required libraries, and used the sample sketch and modified with it my TTN device EUI and APPKEY.
Sketch compiled successfully.

When running the sketch, often takes over 4 minutes to finally join TTN, as reported by the TTN device console, after joining it seems to repeatedly resend the request to join packet, but no data packets seem to be sent, and the sketch never seems to confirm it had joined the network, though TTN did acknowledge and join request was accepted.

MY QUESTION: Does any one have a basic sketch for the Sparkfun The Thing Plus expLoRaBLE that works consistently that they would be willing to share? It would be most appreciated.

Serial Output Snippet (first minute), showing repeated xmit start, and rx timeouts.

11 posts - 3 participants