@voxltester That is not a normal option to choose via voxl-px4.conf. You will need to hand modify the startup script /usr/bin/voxl-px4-start to properly start the driver in i2c mode. Use option -b 4 to select that i2c bus.
Hi @voxltester
Are you able to post a high res photo of the USB breakout board, both top and bottom?
Could save you the time and hassle of an RMA with a good high quality photo I can inspect.
The board was tested and passed before shipping, but these boards do have some small parts on that that are susceptible to damage if the board is dropped or if a tool or other item hits into it.
