Connecting T-Beam to LoRa WAN to send data to TTN

End Devices (Nodes)
1

I am currently trying to send data to TTN by LoRa WAN. I want to forward data from esp32 T-Beam node to RAK 7268 gateway which will then forward the data to TTN.

So far, the examples I found from the Heltec-Esp32 library are for esp32 s3 and not for esp32. Has anyone here been able to connect their device to TTN through a gateway? What library have you used?

My TTGO T-Beam has SX 1278 chip and has worked with LoRa p2p before so i can confirm the device is working. I have connected my RAK node with the gateway to send data to TTN so can confirm the gateway is fine too.

Any help would be greatly appreciated. Thank you!

2

The Heltec libraries for LW are really only for Heltec devices and you are using a LilyGo device.

Try RadioLib.

PS, nothing connects to a gateway, you connect to the LoRaWAN network server - the gateway has no brains to connect to.

3

Try RadioLib.

I have tried the library that you mentioned after trying to run an example, it produces a compilation error regarding an ‘object’ within the code. I cannot seem to figure out how to fix it. I have added the necessary keys to the program and assigned the proper region too.

In file included from C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024618-10468-j8p1xz.ugxff\LoRaWAN_Starter\LoRaWAN_Starter.ino:25:
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024618-10468-j8p1xz.ugxff\LoRaWAN_Starter\config.h:129:19: error: 'radio' was not declared in this scope
  129 | LoRaWANNode node(&radio, &Region, subBand);
      |                   ^~~~~
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024618-10468-j8p1xz.ugxff\LoRaWAN_Starter\LoRaWAN_Starter.ino: In function 'void setup()':
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024618-10468-j8p1xz.ugxff\LoRaWAN_Starter\LoRaWAN_Starter.ino:34:19: error: 'radio' was not declared in this scope
   34 |   int16_t state = radio.begin();
      |                   ^~~~~
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024618-10468-j8p1xz.ugxff\LoRaWAN_Starter\LoRaWAN_Starter.ino: In function 'void loop()':
C:\Users\user\AppData\Local\Temp\.arduinoIDE-unsaved2024618-10468-j8p1xz.ugxff\LoRaWAN_Starter\LoRaWAN_Starter.ino:52:20: error: 'radio' was not declared in this scope
   52 |   uint8_t value1 = radio.random(100);
      |                    ^~~~~

exit status 1

PS, nothing connects to a gateway, you connect to the LoRaWAN network server - the gateway has no brains to connect to.

I am a beginner to this so thank you for clarifying.

4

Which Arduino-ESP32 board package are you using and I can investigate. I live with the RadioLib tester so shouldn’t be much to debug the situation for you.

PS, I’ve removed the rude word in the title, please don’t use the M word again, we can’t afford to be picked up by Google searches!

5

Which Arduino-ESP32 board package are you using and I can investigate. I live with the RadioLib tester so shouldn’t be much to debug the situation for you.

BSP for esp 32

BSP for heltec esp32

These are the 2 board packages I have for esp32 boards. For the libraries, I have downloaded the RadioLib library version 6.6.0 as suggested by you.

My region is AS923 and I have edited the keys into the format required too

Thank you

Edit -

I think it would be easier to mention that I am using a T-Beam with SX 1278 too.

6

Sorry, should have been clearer, it’s which version of the Arduino-ESP32 BSP - we have been using v2 whilst we wait for the very new v3 to settle down so I don’t know what the current status of v3 is but I can check.

I’ll get the docs updated to reflect this.