RAK811 with Arduino Uno connection problem

Hello, I have the RAK811 915Mhz node and I want it to connect it with my Arduino Uno,
I have followed the tutorial given by RAK: https://downloads.rakwireless.com/en/LoRa/RAK811/Application_Notes/Get_Start_with_RAK811_WisNode-LoRa.pdf
And I didn´t have any problem related to upgrade the firmware, also, I connect the node with TTN via OTAA with RAK_SERIAL_PORT_TOOL_V1.2.1, I receive messages in TTN with the AT command, for example “at+send=lora:2:12345678”, all is OK.

Now I want it to connect it with my Arduino Uno, because I want to use it to make some measurements and send data it to TTN, I used this Arduino library: https://github.com/RAKWireless/RAK811/tree/master/Arduino%20Library
I used the Join Network OTAA example,
But doesn´t make connection with my gateway, it never sends any payload to TTN, also, I followed other tutorial: https://www.hackster.io/naresh-krish/using-the-rak811-lora-module-with-arduino-a38de8
but same results, not working, it doesn´t send information to TTN.

By the way, which is the correct way to connect it with the arduino is the correct way to connect it with the arduino, TX an RX of each other via cables or just connecting the RAK811 into the Arduino?

With the RAK serial port tool I don´t have problems sending information to TTN via AT commands, maybe I´m not using the correct arduino library, I don´t really know.

Any suggestions?
Thanks in advance and greetings!

1 Like

Hey…

Just checp PiSupplys RAK811-Arduino code… It will be of help to you. https://github.com/PiSupply/RAK811-Arduino
Even though their program is for the old firmware, you can modify the same for the current newest firmware V3.0.0.4

Connect RX of Arduino to TX of RAK811 and vice-versa. Just remember, Arduino UNO has logic level 1 at 5 V, whereas RAK811 works at 3.3V. Use level converter on the RX pin of the RAK811.

Regards

Hi Sebastian. I hope your are well. Could you fix your problem between rak811 and arduino . I have the exactly same proiblem.

Best regards

Hi @sebasretes . I hope your are well. Could you fix your problem between rak811 and arduino . I have the exactly same proiblem.

Best regards