I am using two emlid reach M+ since Augst as RTK device for field sampling.
I started using two cheap 3DR radio:" RS232 TTL UART Wireless Transceiver Module for Arduino DUE MEGA2560 3DR Radio" to allow communication between the rover and the base. [here you can find the description : https://www.ebay.com/itm/2x-RS232-TTL-UART-Wireless-Transceiver-Module-for-Arduino-DUE-MEGA2560-3DR-Radio/282722771557?hash=item41d3972265:g:nqYAAOSwjzJbDDTW:rk:3:pf:0]
Everything works fine. I linked the S1 using the red, black, yellow and blue pin in VCC,GND,TXD and RXD.
Then, I tried to substitute the 3RD radio with two more powerful LoRa module: E32-915T30D by Ebyte. The two modules are 1W wireless transceiver modules with LoRa spread-spectrum technology, operates at 900~931MHz, based on original imported RFIC SX1276 from SEMTECH, transparent transmission is available, TTL level. [ the manual is available here: http://www.ebyte.com/en/downpdf.aspx?id=174]
So, I supposed that just connecting the pin: VCC, GND, TXD, and RXD in the same order as the 3rd Radio, and as suggested by the DOCS (red, black, yellow and blue), and respecting the default setting of the two device (9600 baud rate) it could work. But I was wrong.
I tried all the baud rate in couple (base and rover), but it doesn’t work in any configuration.
I am not very into electronics and informatics, So I tried to google a bit, but seems nobody used two LoRa (not the emlid ones) as a transceiver to connect two emlid M+ for RTK purpose. That makes me think, it can’t work.
I tried to use PuTTY and filezilla to find the LoRA module as a device connected to the M+, /dev/ttyMFD2. to see if it is possible to check if it is working or not,
I can connect only to the M+, but I can’t find the device folder.
So now I am in a culdesac.
-Someone think it could be possible to set the external LoRa, connected to two M+, to start communicating with each other?
-In case is possible to set the LorA module through the M+ /dev/ttyMFD2?
-Are there any guides to follow?
I hope to have given some useful information for the community and that someone can give some advice or indications.
My best regards to everybody