Single Channel Packet Forwarder part 3 [Deprecated]

32

Thank you guys,

First, i mean by a ‘wifi lora 32’ a “Heltec WiFi LoRa 32 – ESP32 with OLED and SX1278”.

Then, actually i connect the board to a DHT11 sensor, to collect Temperature and humidity. Its work and the Data are displayed on the OLED Display. Now, I want to do something with these data, something like : store it in a database or use it on a web application … for example.

I also read that a LoRa network needs three things : end-devices (for me its a board with the sensor) , a LoRa Gateway and a LoRa network Server. So this why i am asking for a Gateway !

Could please suggest me something to do with the data i collect, and give me some explanation why i don’t need a gateway ?

33

sure… LEARN don’t expect us to do your ‘home work’
start reading and use search here on the forum and google to understand the basics of the things network.

34

Thank you for help.

35

But you did ask;

“I need to make a low coast LoRa Gateway using Raspberry pi 3 and Wifi LoRa 32”, hence the answers you got and you do not need a node (Wifi LoRa 32) to make a Gateway.

Try a Google search on;

raspberry pi lora gateway

1 Like
36

Hi all,
does anyone know a working library for a Singol Channel Gateway (Raspberry PI3),
with the possibility of downstream messages?

I am currently using /tftelkamp/single_chan_pkt_fwd , but it does not have this feature.

In the summary at the beginning of this tread, for the gateways made with ESP8266 are indicated a couple of packages that have this possibility, but I have not found anything for raspberry PI3

Thanks

37

Hi all
I found and verified the operation of a library to create a gateway with Raspberry PI3 and Dragino Hat v1.4, which allows the downstream messages

I used the code https://github.com/bokse001/dual_chan_pkt_fwd/tree/dual_chan_pkt_fwd_up_down
following the directions with the changes written in the post1
DRAGINO problems and solutions topic
and in the post2
DRAGINO problems and solutions topic

@BoRRoZ do you suggest making a dedicated topic ?

3 Likes
38

sure… if you make a clear topic start with all the info :roll_eyes:

39

@BoRRoZ
I published all the info collected in a new topic LINK, I hope I was clear :grin:

1 Like
40

yes thank you ! great write up very helpfull :sunglasses:

41

Can’t gateway, that uses rfm95w module and Raspberry, send down message to end-node?
I used single Chanel library. Thank for your answers!

42

Hello,

I running a single channel GW with the latest Dragino board directly attached to a raspi.

I using the single_chan_pkt_fwd and logging the incoming messages.

So far my gateway have received 90 messages from these some of them are sort as:

MR/L+YjZ

I believe these are invalid/broken packets however most of them are over 70 character base64s.

I only see Received Messages: 2 so far 2 out of 90.

There is no other gateway anywhere nearby me so I don’t think some of these were not counted because it went into other gateway first.

43

and your question is ?

44

Why are there only 2 messages showing up?

45
  • What is the difference between a “single-channel gateway” and a “real gateway”?

A real gateway is able to listen on 8 channels and all spreading
factors at the same time. Single-channel gateways are fixed to one
channel and spreading factor, so they will only receive about 2% of the
messages unless you specifically configure your nodes to send at the
exact same configuration as your single-channel gateway.

As LoRaWAN is a spread-spectrum radio protocol, single-channel
gateways are not LoRaWAN-compatible.
You can use a single channel gateway on the TTN network but you miss a lot of messages, if you use your own node you can match your gateway channel with that of the node and don’t miss messages because the channels are 'locked.

46

hello all, i just install ttgo singlechannel gateway and test another node is ttggo 868 mhz node

node keep sends uplink data to gateway but how can i send downlink message to node?

for example

turn on or off message to node

thanks

47

@telkamp Please excuse the completely noob question, but I am trying to use your hallard implementation, but can’t seem to find the Gateway Id. Everything seems to work fine but it just starts and stops without telling me what the id is, as per the below picture. Please could you explain where I’m going wrong?Capture
In advance, thanks a lot! Several hours of Googling don’t seem to have helped, so lets try people!

48

It would be shown in the log file, or you can work around not seeing it by starting the packet forwarder like below:

./single_chan_pkt_fwd/single_pkt_fwd

Assuming that you are in the pi folder. Also this should be obvious but sometimes people forget so before you run that command make sure you stop the service with sudo systemctl stop single_chan_pkt_fwd.

49

Perfect, thanks very much @glbaum ! Just one point for anybody else with this problem in the future, running this command from the pi folder didn’t work (I assume a permission issue), but going into the single_chan_pkt_fwd folder and running ./single_chan_pkt_fwd worked perfectly.

50

I don’t necessarily remember if I needed to use sudo to run it outside of it’s folder but maybe that’s the case. I just know that I had been able to start it that way, but either way I’m glad you got it working @Paul_B!

51

Hello

I made a BOM at octoparts for the WeMos/LoLIN D1 mini SCGW for the PCB from @Charles and his solution at his Git .
At my BOM i made a little bit more.
Ad OLED, SMA, Conector for OLED … and so on. Describe a little bit at the end of the rows. :slight_smile:
But before i spread, can someone have a look that BOM is ok? And give me response for improovements.
If interestet you can find it here: octoBOM

Greets