Single Channel Packet Forwarder part 1 [Deprecated]

Great work. Thanks for sharing.
Do you know how many devices can be managed at the same time by this single channel gateway?

1 at a time (single channel)

@platenspeler hi maarten, I’m using a raspberry based SCG and I hope that @Thomas will implement that too :wink:

Dear all. Nice discussion over here. I gave my first try with @Thomas single_channel_gateway on RPi A+ board and RFM92. I have attached snapshot of my log file.
But I am not receiving any packets. Should I have a near by node device to receive the packets?. I am located at Chennai, India. And I dont have any data on my gateway,

Thanks in adv,

Yes, of course. The distance depends on many factors. And your gateway could also receive LoRa packets that are not using LoRaWAN or are using LoRaWAN keys not known to TTN, both of which would then not show in the API but would still show in your own logs.

So, as your logs shows nothing, it seems there are simply no nearby nodes sending at 868.1 MHz, using “virtual channel” SF7 (which is for the shortest distance). Are you sure 868.1 MHz is even the frequency you should use in your area (please discuss that there)? You also might want to get in touch with @Nat; see Chennai, India.

11 posts were split to a new topic: Designing a breakout board for the ESP32 / RFM9X

warning this clone nodeMCU board won’t fit on this single channel gateway PCB :sleepy:

so sad!
it seems that the nodeMCU is to wide for the PCB.
could you please tell us the measurements of a fitting one?

10 breadboard steps, there seems to be 2 different clones, the cheapest one = 12 (the one on the picture labeled LoLin) and that one doesn’t fit :sunglasses:

22,5 mm :grinning:

Unfortunately i bought the wrong version as well …Now I have to wait another three weeks :cry:

I think this one will fit > 2016 New Version NodeMcu Lua ESP8266 WIFI Internet Development Board CH340

@BoRRoZ, @PH3V thanks for your measurements. I’ve also the wide ones, but no oshpark board yet.
in the meantime some other boards arrived topic

WeMos Lora RFM9x Gateway Shield ordered @ursm . :+1:

@torntrousers, I’m also in London, trying to get the single channel gateway and lmic 1.5 working.
Want to meet up to try to debug?

Sure ok, I’ll message you.
Can share my supadupa design for a gateway-in-a-bottle with ground plane antenna:


I like it. You wouldn’t happen to be a radio amateur perchance?

I’m based near the beginning of the M1 - Cricklewood. Where are you?


Quick question - does this single channel gateway code support OTAA nodes?

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Hi guys, a quick question:
I have a RasPi3 with Cooking Hacks Shield with RN2483.
I’ve come to understand that the making a gateway with RN2483 is not (yet?) possible.

If I order their SX1272 LoRa module, it would be possible to make a single channel gateway, yes?
Would the software mentioned in this thread also work?
Any attention points to look out for? SPI pins or something like that?

hey Chuck,

You are a life saver mate, I was struggling with wiring RFM95W to RPi3, since this morning.

No, a single channel gateway is not a gateway. It’s just a LoRa radio receiving messages on one channel.
With the sx1272/6 modules being used you will not be able to respond to any messages being received, so returning an ACK, a message or even OTAA is not possible.

Also remember that a node will do channel hunting and this gateway will only listen on one frequency with one Spreading Factor so it will miss a lot of messages being sent.

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Hi all,
I also built the single channel kindof gateway, but as in the picture of platenspeler it says Packets forwarded 0. Shouldn’t packets get forwarded?