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Strange behavior from my gateway #56
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Apparently, there is the same problem with my two gateway. I am very annoyed because I can not transmit data and it need to be back to the normal as soon as possible. Thanks for any help PS: I move my gateway to 10m from my node without success of transmission |
I hope you can help me soon. I oberserved the problem come since I reinstall both gateway with the last rasbian. None of them work perfectly (almost nerver) . I am just in my flat, I plug and switch on the gateway I bring back with me, .... and it works!!!! My nodes are in a orchard and now there are leafs around the nodes, but my node 2 is at 10m from my gateway and last year it was working well, while my gateway was at 1km from my two nodes. So what can I do now to make sure that my gateway work at any time, ... and any where? Many thank |
There are too many things that could be going wrong, it's not something that can easily be diagnosed over comments, but here is an unordered list of things to consider:
Cheers!! |
Dear gonzalocasas,
I followed exactly that procedure.
Yes, that was when it was on the top of my camping car at 1km from the nodes. Last year it worked.
Yes, it was my first thougth, but since I oberserved the gateway missed the measure of the two node at the same time, I supected the gateway. Additonally, today it work the time I worked around the orchard and until I switch off the gateway. I restart, and .... trouble..
I am agree, but again, why last year I did not experiment that issue and we are at the begining of the season. The second node is at 10m from my gateway and we can see it. Do you think that I 10m I am at the edge of what work?
I use the default as you can see here How can I check my gateway regarding this topics? Your code is by default DR_SF7,14
Yes, that's correct, with no auto management of SF. (I do not remember how to change to auto)
Tomorrow, I will retrun to the orchar with TTN console open to see if I can read what you suggest.
Yes more or less. the roof of my camping car is 3.2m from the ground and the camping car is at about 1km. But thta work for one year, even if the gateway location is not perfect. Now the gateway is at 10m and does not work. As I wrote, I also place the gateway at about 200,, 500m without success while it works at 1km, last year.....
Yes, I understand, I will ad more picture of the station.
Hope my comment can help, you can help me to clarify that issue Many thank . |
I forgotten to write something important, I wrote I created a node to measure the RSSI which send message each 30 sec. Even when I was sitting beside my gateway with the RSSI node on, the gateway do not transmit the measure of the RSSI node. It's the reason why, I do not think the foliage is the major obstacle/issue. |
Hello, Tuesday, I reinstalled my gateway with Jessy. It has been working for four hours, then nothing for 3 hours. Nothing for about 24h and a mark for today at 13:38 Here are the pcitures, I took on Wednesday |
I wouldn't know what the problem is; it can be almost anything, the failures don't have a pattern. It could be temperature (did it fail during night's lower temperatures?) affecting the modules (the RN2483 first rev are known to fail on lower temps); it could be assembly problems (the antenna you showed on your indoor box has a clearly indoor antenna, you mention your gateway is more or less the same, but I hope you have an outdoor antenna instead), it could be power supply issues on the gateway side, it could be code issues, you mention you used "the default SF7", but that's not the default, that's the optimal SF, you should be using OTAA and AdR for proper SF management. For now, the only thing I could say is, check all these points one by one, make sure every piece of the puzzle works in isolation. |
Dear gonzalovasass, |
Dear Gonzalocasas, If you look at the graph, and change the date from the 1st of may, we can see it work well until the 20th of may and the temperature was never below 5°C. On the 30th of may, the gateway get 4 measures and stop at 13:53UTC and the temperature was 23°C. Yes my two gateway and nodes have the same antenna and I did not know, there were indoor andtennas!!!!???? |
But a gateway is fixed on a special SF? I mean, do I have to set my node SF regarding the Gateway? If yes, how can I modify the gateway SF, or what's the best SF of my node, for the gateway? |
@pierrot10 sorry for the very long delay. Regarding the SF questions, gateways don't have a fixed SF, they will be listening for all of them. It's your node that needs to regulate that, if you're having reach problems, just bump the SF7 to SF9 for instance. But ideally, as mentioned, you should be using Adaptive Data Rate (ADR) so that the data rate is managed automatically by the network. I don't think the problems you mention are related to the source code in this repository, so I'm going to close this issue; but feel free to keep commenting anyway. |
Hello All,
I have a strange behavior and I would like to know if you can help to understand.
Let me first describe how is my structure.
I have 2 nodes in a orchard at about 450m altitude. There are not above the tree and the foliage, but on the top (you we will better understand later). One of station is in the middle of the orchard and the second at the end.
The gateway it on the top of my camping car, at about 900m of the first station and about 1100m of the second.
I know that my gateway is not well located because it is at a lower altitude than my nodes and there are winyard between them.
Between June and September 2018, in general the transmission were fine.
End of April 2019, I turned on my nodes and the gateway for new measurements, while the trees did not have foliage yet and the transmission started well (the nodes transmit each hour). The leafs appeared and grew up. And suddenly, at the same time (within one hour) , the gateway do not receive and transmit the messages from the nodes.
As it happen at the same time, I though about a problem with the gateway, but not. Then I moved the gateway at about 500m from the nodes, almost at the same altitude and the area is clearer. The nodes stated to transmit again. Great!
It ran well for about 2 weeks until my Gateay MicroCard broke. I changed and reinstalled it. The nodes transmitted again but only fro 4 hours.
** nodes stop transmitting at the same time again**. Or let say may be , the gateway do not receive the message, because the nodes has not stoppred working. For me, its still transmit.
I thought again an issue with the new installed gateway, but not, the gateway worked (I can see the green status at TTN console . Then, I moved the gateway at about 50m from the nodes and the nodes started transmitting!
My guess is as the foliage “covers” the nodes (even if there are at the top of the tree), the foliage act as an obstacle, but it can not explain why the two nodes stopped transmitting at the same time, first all because the apple tree has very less foliage at the second node. My guess is the foliage would make an obstacle, the node will not stop transmitting during the same hour, but may be, with a couple of days of delay.
Then I would to understand why this behavior?
Why the node stop transmitting at the same time, and why it works when I move closer the gateway, while last year, it worked at 1km of distance.
Can it be the power of transmitting, how changed automatically?
Can it be possible that the gateway’s range (sensitivity) somehow dropped and how can I check it and fix it?
I configured as in the example: https://github.com/matthijskooijman/arduino-lmic/blob/master/examples/ttn-abp/ttn-abp.ino#L218
Note, I am using for now (but I will change to OTAA) ABP activation method.
Thank for your point of view and have a nice evening/day.
Cheers
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