Okay, today there are some more news on the project: First of all, I can release the GUI. It was tested on Windows Vista and Windows XP. I hope that the GUI is at least partially self-explanatory, but I'll write a tutorial soon. TriGUI v1.0 features: COM ports 1-30 selectable Saving and loading parameter-sets to/ from hard disc Stick sensitivity (roll & nick, yaw) for acro and hover mode Exponential agility boost for acro mode Minimum throttle (idle up) Free channel assignment (CH. 1-4) for throttle, nick, roll, yaw Motor deactivation (safety feature) Inversion of the directions of the gyro's and the ACC's Modify parameters for the complimentary filter Hover and acro mode PID parameters Voltage warning threshold Display problems with reception Realtime display of sensors, transmitter and voltage level Firmware update via RS232 with a single button click If you're using windows XP, you might have to install the .NET framework 3.5 prior to using the G...