Omnava 1

• asked Nov 20, 2025

MIC of join-request is invalid (code:"UPLINK_MIC")

I have onboarded two nodes. One is connected successfully, while the other is showing a key error. I have checked multiple times, its correct, but here it is showing this issue. level:"ERROR" code:"UPLINK_MIC" description:&#...

troubleshooting devices chirpstack

0 votes

1 answers

41 views

Marius Tamulis 1

• asked Nov 20, 2025

Clarification on REST API vs gRPC for ChirpStack v4 Integration

Hello, We are integrating ChirpStack v4 into our custom IoT management platform and we want to confirm whether our understanding of the REST API situation is correct. From our tests and from previous replies, it seems that: The REST API in ...

api chirpstack

0 votes

1 answers

64 views

1

• asked Nov 20, 2025

The node is unable to receive multicast messages from the server.

Has anyone encountered this problem? I am using chirpstack's multicast. The multicast address, MCkey, as well as the Multicast network session key and Multicast application session key of the server. I am using the STM32WLE5CCU6 model o...

troubleshooting chirpstack multicast

0 votes

0 answers

20 views

Igor Pereverzev 5

• asked Nov 19, 2025

Setting up a region of concentrator

Hello! I've installed chirpstack + concentratord + mqtt-forwarder on raspberry pi 4. Region parameter in concentratord.toml set as region="EU868", topic_prefix in mqtt-forwarder: topic_prefix="eu868". As I understand the...

chirpstack-concentratord configuration

0 votes

1 answers

57 views

1

• asked Nov 19, 2025

How to set the MCKey for the multicast node and the McNwkSKey and McAppSKey

The following picture shows the Multicast network session key, the Multicast application session key, and the McKey of the nodes that I set myself. However, even after the settings were completed, multicast communication still couldn't ...

chirpstack multicast

0 votes

1 answers

68 views

Christophe 3

• asked Nov 18, 2025

Unsolicited downlinks

How to avoid unwanted down link with null port and null frm_payload ? Some of my sensor receive unconfirmedDataDown with port value as null, and frm_payload value as null too without I send something. I would like to know why, understand if...

troubleshooting devices chirpstack

0 votes

1 answers

41 views

Ruben Cantarero Navarro 3

• asked Nov 17, 2025

WM1302 (Seeed) + Raspberry Pi 5 with ChirpStack Gateway OS — Any experiences?

Hi everyone, Has anyone used the Seeed WM1302 with a Raspberry Pi 5 running ChirpStack Gateway OS? I’m specifically trying to confirm two things: Does it work correctly on the Pi 5 with Gateway OS? Is the installation process the same as on...

gateways chirpstack-os raspberry-pi seeed

0 votes

2 answers

64 views

rainer.lilischkis 1

• asked Nov 15, 2025

Wisgate RAK7289V2 - Chirpstack V4 : Invalid DataRate

Hello, I´m new to chirpstack as we installed a LoraWAN this summer on campus of our university. So far the system performs good. In the log though, I see repeating blocks of user.notices about invalid dataRate. Can someone please direct a r...

gateways basics-station rak-wireless

0 votes

0 answers

51 views

john 1

• asked Nov 14, 2025

Class B Downlinks not scheduled for right time in chirpstack

Hi Everyone, @brocaar I have been trying to work with lorawan network for class B, So basically when i am scheduling downlink for class B using chirpstack so it is sent to the gateway with tmms (consider 1447146208.530) and packet forwarder...

chirpstack waveshare class-b

0 votes

2 answers

76 views

1

• asked Nov 14, 2025

Device does not receive multicast downlink

Can ChirpStack send messages to a specific member within a multicast group through the UI interface?

chirpstack multicast

0 votes

2 answers

37 views