I have a Darwin Mini that I hacked to also carry a Raspberry Pi Zero. The OpenCM connects to the Pi via Micro USB and I run ARC on my Windows laptop to connect to the Pi. I installed the OpenCM USB port settings on the Pi and so far I can successfully control the servos that are connected to OpenCM from ARC. When I run ls /dev/ttyA* on the pi it gives me the serial device: /dev/ttyACM0 which is all good. However that seems to only work when both are connected to my home wifi network. When I connect both the Pi and the laptop running ARC to my iPhone hotspot - the servos no longer respond to the scripts and it seems as if the pi lost connect with OpenMC although the serial device /dev/ttyACM0 can still be seen. Everything else such as camera is working fine. Any suggestions on what could have caused this? Thanks!