2Feb/140
Firmware Upload HKPilot Mega V2.5 Flight Controller
The first time I tried to upload the ArduCopter firmware to the Hobbyking HKPilot Mega V2.5 Flight Controller I got an error "Communication Error - no connection". Even though I specified the correct COM port identified via the Computer Management in Windows 7. Under the "Ports (COM & LPT)" it shows up as "Arduino Mega 2560 (COM35)" along with two others "Standard Serial over Bluetooth link".
Convinced I had the settings right I was beginning to wonder if I had a dud board. The solution I found was to disable the other two COM ports in the Computer Management.
After disabling these COM ports, the firmware uploaded to the board with no errors.