Hi, Having some issues sending commands through ardSerial.py. Have setup serial communication as per the petoi documentation and have bluetooth disabled. dev/ttyAMA0 exists. The RPi is currently connected to the NyBoard V1.1 via 2x5 socket with the switch set to arduino. RPi OS: Raspbian GNU/Linux 11 (bullseye). Thanks in advance! :)

dev/ttyAMA0 is not the serial port to be used. ttyS0 is the right port.
Have you removed all the dongles connected on the NyBoard's 1x6 uploader port?