MS48 / Chirpstack version / S31-LB Codec

[Pete]

G'day Dragino Support,

I'm setting up a MS48 for offline deployment using the embedded chirpstack and MQTT integration. I'm trying to decode S31 measurements. 

I have the S31 registered with the embedded Chirpstack and packets are getting through correctly. I'm struggling to decode the packets. I have tried codecs for Chirpstack V3 and V4 from the github but both codecs error and I am unsure why. 

Is there a different codec I should be using ? 

Regards, 
Pete

[kilight]

Hi, Pete

I tested the decoder of S31B-LB and found no errors. Could you please take a screenshot of the error message displayed on chirpstack for us to check?

The decoder I use is:

https://github.com/dragino/dragino-end-node-decoder/blob/main/S31-LB%26S31B-LB/S31-LB_V1.3%20_Chirpstack_V4_decoder.txt

Best Regards

Kilight

Technical Support Engineer

 

Dragino Technology Co., Limited

Room 202, Block B, BCT Incubation Bases (BaoChengTai),  No.8 CaiYunRoad

LongCheng Street, LongGang District ; Shenzhen 518101,China

Direct: +86 755 86610829 |Fax: +86 755 86647123

---

From:Pete <cm7...@gmail.com>

Date:2025-09-13 13:08

To:dragino-user <dragin...@googlegroups.com>

Subject:MS48 / Chirpstack version / S31-LB Codec

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