Hi All, Was anyone successfully able to add the NIS-UL – Ultrasonic sensor lora sensor to TTN ? Thanks

Did you understand the formatting of the example packets that are given in the documentation you linked? As in if you got a packet of 8B02009700981f19 do you understand how you’d get the four readings of 151, 152, 31, and 25 at least from that? The decoder will have to account for the fact that the …

The following can be used to decode the data. I don’t own this device, so it has only been tested with the provided examples, and some more examples I created myself: function Decoder(bytes, port) { // See http://wiki.nemeus.fr/index.php?title=NIS-UL_UltraSonic_Sensor#Nemeus_uplink_protocol …

Looks great, Arjan, thank you. The image below is some of Flood Network’s sensors producing data and using your decoder. We already decode in our application, but it’s very useful for debugging on TTN. I included a device which was woken from standby too to check wakeup codes. (Note that the sensor…

[image] floodnetwork: fix the fact they’re stuck at SF12, but only on TTN I guess you know how to tell if ADR is enabled, and if TTN is trying to command the nodes to change their settings? (If ADR is enabled and the device is at SF12, then I think TTN will initiate a downlink when it cannot …

Hi Arjan, this works a treat! Thank you so much for taking the time to look into this. I’ll also pass this on to Nemeus to see if they can update their wiki to be more user friendly. I will test new downlink formats to get different measurements etc. Thanks!

[image] arjanvanb: Are they using the same LoRaWAN port number for their different formats? I can’t see anything regarding this in their documentation anywhere.

Hi Arjan, [image] arjanvanb: I guess you know how to tell if ADR is enabled, and if TTN is trying to command the nodes to change their settings? I can see that ADRACKReq is set in the uplink packets, but I can’t see what TTN does with them. It just seems to ignore them. An explicit downlink …

[image] floodnetwork: I can see that ADRACKReq is set in the uplink packets Jut to be sure: in LoRaWAN 1.0.x, that should only be set every 64 packets (and only if no downlink was received in the meantime ). But for each uplink, the ADR bit should be set as well, so TTN knows it needs to keep …

Hello there, I am unable to get the sensor to register to the TTN application, although i can see the frames in the gateway traffic, it was working fine, but it stopped suddenly, i tried deleting the app and creating it again with no luck, any advice ? Thanks

are you using new TTN generated keys , a new application (with a different name) ? or re using the same keys as before …

Nemeus NIS-UL – Ultrasonic sensor

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llyrowenjones (Llyrowenjones) September 17, 2018, 1:14pm 17

I can’t see anything regarding this in their documentation anywhere.