Known Issues - MPC-Berkeley/barc GitHub Wiki

USB port

On the odroid XU4, the USB port next to the power port only works for permanently connected devices. Don’t plug and unplug while the odroid is running; it will not recognize any devices plugged in after it has booted up. Use the other USB ports instead to connect the arduino.

System clock

The real tick clock battery ensures the odroid maintains a correct system time even when the odroid is shut down, so make sure it is always plugged in. A wrong system time can cause problems when trying to connect to Wifi networks