v2.0: Direct-to-drone USB + response diagnostics
What's new
1. Direct-to-drone USB mode (VCOM)
If FCC doesn't work through the RC, try connecting a second phone directly to the drone's USB-C port. The app auto-detects which mode to use.
AOA mode (phone → RC USB): The normal path. Works if FCC persists after switching to DJI Fly.
VCOM mode (phone → drone USB-C): For drones where DJI Fly resets FCC. Requires a second device:
- Device 1: DJI Fly connected to RC normally
- Device 2: FreeFCC USB plugged into the drone's USB-C port
2. Response diagnostics
The activity log now shows every response frame from the controller/drone — parsed with sender, destination, command set/ID, and payload. This shows whether your drone is ACKing the FCC commands or ignoring them.
If you tested before and FCC didn't work: please try v2.0 and share a screenshot of the activity log after tapping Enable FCC. The response frames will tell us exactly what's happening.
How to use
Method 1 — Through RC (AOA):
- Close DJI Fly → plug phone into RC TOP USB → Connect → Enable FCC → switch to DJI Fly
Method 2 — Direct to drone (VCOM):
- Phone A: run DJI Fly, connected to RC normally
- Phone B: run FreeFCC USB, plugged into drone's USB-C port
- Tap Connect → Enable FCC on Phone B
- FCC persists because DJI Fly never sees the change