Node RAK811+Arduino


(Timaru Dc) #22

Yeah that’s right - that’s really the premise of why I wanted a lower baud rate and why I was using the hardware serial to get there. Note I’m using purely the hardware serial above :slight_smile:


#23

this baby has an extra hw serial (I use it also to run the TTN lib) and its 3v3 so no levelshifters


(CovraWorkS) #24

I have same problem… no comunication between Leonardo or Mega 2560 and RAK811 via serial1

I have checked jumpers, Q’s, and all its fine… 3v3 signal get into RAK811 by UARTrx pin (oscilloscope used), but UARTTx pin doesnt respond…
If I send AT comands via USB-PC the board works fine

I tried to change bps (even 110000 ??), but nothing…

Any idea?serial1_rak811


(CovraWorkS) #25

SOLVED:

The level sifhter built in RAK811 board cant work at preset RAK811 baudrate (115200) so:

at+uart=9600,8,0,0,0

Now arduino (Leonardo, Mega…) can talk with board (serial1.begin(9600))