usb host shield

I am trying to control two independent robots simultaneously using two Arduino Mega with USB host shield and xbox 360 wireless controllers (2.4 Ghz dongle). But I sometimes face the issue where the xbox controller disconnects and connects to the wrong host shield arduino mega. Is there any way...

Hello, I am using the Arduino Servo library to actuate two BLDC motors and ADK USB Host Shield to control them using a USB dongle controller (XBOX). But I am facing issues particularly in calibrating the BLDCs and lose the host shield. The most probable problem I could think of is there are some...