hyucksoon
January 14, 2020, 12:58pm
1
Hello,
! Beware this allows a connected console with the ttn user to issue any commands on your system.
without any password control, This step is completely optional and remains your decision.
==============================================================================
On console, it shows not connected.
Could you help me to solve this problem? Thank you.
You should post the logs of your RPi to get the best help.
cslorabox
January 14, 2020, 4:00pm
3
Is the packet forwarder actually running, or did it fail on or shortly after startup?
Do you have any nodes sending packets which the gateway is receiving and trying to report to TTN?
hyucksoon
January 15, 2020, 6:18am
5
kersing
January 15, 2020, 7:53am
6
When I look at you message I see a lot of far too small text In a picture where you could just have copied-and-pasted the text in stead of posting screen captures.
Please post text content as text, not screen captures.
hyucksoon
January 15, 2020, 12:48pm
7
Oh, sorry. i expected you could see the log.
pi@ttn-gateway:~ $ sudo systemctl status ttn-gateway service
Jan 15 08:57:03 ttn-gateway systemd[1]: Started The Things Network Gateway.
pi@ttn-gateway:~ $ sudo tcpdump -AUp port 1700
pi@ttn-gateway:~ $ sudo tail -f/var/log/syslog
kersing
January 15, 2020, 6:39pm
8
Try 3 again with a space between f and /.
hyucksoon
January 16, 2020, 1:12pm
9
Thank you sir, i got this message.
pi@ttn-gateway:~ $ sudo tail -f /var/log/syslog
cslorabox
January 16, 2020, 7:48pm
10
That power warning is worrisome, you may need a better power supply.
Mostly I’d suggest you continue to watch the syslog tail for five minutes or even longer.
In particular, you need to see valid messages being received from node(s). At the gateway level they will still be encrypted, but the base packet level CRC should be valid so that they are eligible for forwarding to the network.
And you need to see that the push / pull messages are being acknowledged by the network.
Your limited paste there doesn’t show any packets, and it seems to suggest that the network is not acknowledging the gateway’s attempts to contact it.
hyucksoon
January 17, 2020, 5:48am
12
Thank you.
voltage
push / pull message
Seeing valid messages from nodes: How can i check? I am planning to use the Dragino with Arduino UNO.
Unfortunately, I’m not a specialist for communication technology but a student. Nevertheless I appreciate you helping me with these problems.
hyucksoon
January 17, 2020, 7:02am
13
I’ve checked the voltage of the RPi.
kersing
January 17, 2020, 7:30am
14
The voltage needs to be 5V +/- 0.2V. If the output of your power supply meets those specifications (check, don’t trust the label) your cabling probably causes the drop.
hyucksoon
January 17, 2020, 7:50am
15
Here is my syslog.
Jan 17 10:43:52 ttn-gateway ttn-gateway[315]: ##### END #####
hyucksoon
January 17, 2020, 7:52am
16
When I check the voltage with multimeter, it shows 4.8V. Is it still weak?
cslorabox
January 17, 2020, 3:35pm
17
You can’t measure what matters with a volt meter, as the load varies over time. You’d need a digital oscilloscope capable of triggering on power dips. The firmware messages indicate you still have a power problem, however I suspect you also have additional problems, for example you may not be using the correct address for a TTN server (or might be behind a firewall unusually blocking traffic), since you seem to never get an ack from it.
Additionally it seems you have not yet received an LoRa packets over the air. Are your nodes sending?
dbrgn
January 20, 2020, 5:37pm
18
I would recommend getting a better power supply if possible. Which one are you currently using, an official one, or a random USB charger?
The Raspberry Pi is quite sensitive to undervoltage, it can cause SD card file system corruption for example.
hyucksoon
January 21, 2020, 5:21am
19
I have nodes made of arduino and dragino.
hyucksoon
January 21, 2020, 5:22am
20
I was using a official Samsung smartphone charger.
hyucksoon
January 21, 2020, 5:35am
21
Let me try this instructions from the beginning:
kersing
January 21, 2020, 7:47am
22
RPi with LoRaWAN concentrator will require more juice than a smartphone charger can deliver. Specifically peak current draws will not be handled.
