Rack7200 and rack serial port Tool

Hello

For two days, I can check the status of my rack7200 connecting to USB but this day does not respond to a simple request

to + version
does not display anything but is two days ago everything was working normally

Can you help me with this problem
Thank you

Hi @rolanderuel,
Check if you see the device in your device manager when you connect it to your PC. As it is shown here: https://docs.rakwireless.com/Product-Categories/WisNode/RAK7200/Quickstart/#connecting-to-the-rak7200

Hello

yes exist it
com7 USB-SERIAL ch340 correct

Have you tried to restart the device from the reset button while connected to the serial port tool? What is the output?
Also, make sure that you do not have any spaces in your at command.

yes
return


| ___ / _ \ | | / / | | | () | |
| |
/ / /\ | |/ / | | | | _ __ | | ___ ___ ___
| /| _ || \ | |/| | | '
/ _ \ |/ _ / __/ __|
| |\ | | | || |\ \ \ /\ / | | | __/ | /_ _
_| __| |
/_| _/ / /||| _|_|_||//


RAK7200 version:3.1.0.13


========================================================
Please Configurate parameters within 30 seconds …

for the status i received this

at+get_config=device:status
OK.


===============Device Status List================
Board Core: S76G_B
MCU: STM32L073RZ
LoRa chip: SX1276

Battery Voltage = 3.821 V
Support Gps:true
gps_timeout: 100s
gps_format:standard LPP format
No signal with Satellite.

MPU9250 sensor:
Acceleration(g) of X,Y,Z:
1.03,0.02,0.03
Gyro(degress/s) of X,Y,Z:
0.48,0.95,0.29
Magnetometer(uT) of X,Y,Z:
-41.25,-11.55,-67.05

===================List End======================


[LoRa]:Join retry Cnt:2
[LoRa]:Join retry Cnt:3
[LoRa]:Join retry Cnt:4
[LoRa]:Join retry Cnt:5
[LoRa]:Joined Failed!
OK Sleep

the only problem is the retur request

[LoRa]:Joined Failed! ( thethingsnetwork -> application -> name -> device-> target

Status

never seen

data empty

Do you have a gateway near by?

1 Like

Make sure that your gateway is properly connected to TTN and also that your credentials for connecting the application are set well. The problem is that your node doesn’t get join success so it goes to deep sleep, and that’s why you can’t send it an at command. The node will wake up after restart, but when you restart it and it doesn’t join it goes the same over and over again.

return command status lora

Wake up .
GPS Init OK
OTAA Join Start…
OK Work Mode: LoRaWAN
Region: EU868
Send_interval: 30s
Auto send status: true.
Send_interval work at sleep
Join_mode: OTAA
DevEui: DECEECFEAC8BE466
AppEui: 70B3D57ED0038835
AppKey: AC1F09FFFE003576AC1F09FFF8687200
Class: A
Joined Network:false
IsConfirm: unconfirm
AdrEnable: true
EnableRepeaterSupport: false
RX2_CHANNEL_FREQUENCY: 869525000, RX2_CHANNEL_DR:0
RX_WINDOW_DURATION: 3000ms
RECEIVE_DELAY_1: 1000ms
RECEIVE_DELAY_2: 2000ms
JOIN_ACCEPT_DELAY_1: 5000ms
JOIN_ACCEPT_DELAY_2: 6000ms
Current Datarate: 5
Primeval Datarate: 5
ChannelsTxPower: 0
UpLinkCounter: 0
DownLinkCounter: 0

Hello
it works
Okay
FAIL The satellite signal cannot be found!
Battery voltage = 3.830 V
Acceleration (g) of X, Y, Z:
1.02,0.02,0.02
Gyro (degress / s) of X, Y, Z:
0.44.0.92.0.29
Magnetometer (uT) of X, Y, Z:
-44.70, -11.70, -67.20

LoRa: Cancel confirmation of sending data OK

but why did I receive the msg
FAIL The satellite signal cannot be found!

Hi @rolanderuel,
Where is the node placed, indoor or outdoor? The buildings can cause a problem with the GPS signal. If it is inside, go outside where you have clear sky vision.
Also, it may help if you set the gps_timeout:120.

i placed outdoor and now is display

at+set_config=lora:app_key:8E6B188526FA608CF3028E2129CE3FBF
[LoRa]:Join retry Cnt:4
OK

at+set_config=lora:app_eui:70B3D57ED0038BF5
OK

at+set_config=lora:dev_eui:0072880EA27F57AF
OK
[LoRa]:Join retry Cnt:5
[LoRa]:Joined Failed!
OK Sleep

So indoors it can be heard by a gateway but no GPS (not surprising).

But outdoors it can’t be heard by a gateway but can get GPS?

Where is the gateway and what sort of antenna does it have?

the gangway is outside.
the antenna is the default of the Lorawan Hat card

and the antenna it’s

I tested with the default antenna of the card and with the antenna purchased from aliexpress this does not change the problem.
it can come from the antenna it’s possible

I followed this documentation step by step

It is so strange that the gateway signal was lost dramatically if he just went outside to get a GPS fix.

Hi @rolanderuel, probably you can share with us the RSSI when your node is still working? Then what is your distance on your gateway?

Surely, you need to test the GPS outside to get your GPS fix. But how far are you from the gateway when you go outside to test the GPS?

Also, at times when you can’t connect to the gateway, try to check if the gateway is still online. We don’t know if it was accidentally unplugged, lost its connection to your network, etc.

Indeed rather odd, maybe a steel structured building, or a high rise so going outside means going down 10 floors and being on the other side of the building.

Or the antenna isn’t firmly plugged in - those pesky uF.L connectors can be tricky.

Hello
I think the problem is linked to the antenna because I tried to leave the antenna of the card by default it does not work.
and I changed the short and long timeout 50 and 120 nothing changed can be change the antenna connector on the card and the antenna