Connecting to microcontroller


so according to the pin out diagram there are 4 tx -rx pins …named as usart 0 and usart 1 both left and right side of wixel please suggest me which pins are suitable for wireless serial app which i will be running by connecting wixel to MCU
so my doubt is to which of these pins i should connect to my mcu to create a MCU->wixel configuration
like the one below

thanks to pololu team for all the help,


That information is covered in the documentation of the Wireless Serial App itself:


i should have gone through this am clear…

thanks for the reply,