Hello there,
Yesterday, i added a new senor onto my quad, MaxSonar MB1260 XL for better altitude hold. Before attaching and re-uploading the ArduCopter 2.7.3 onto the APM 2. I erased and reset the board. And then attached sonar as described in the wiki manual. And uploaded the code and followed all initial steps (Of course i enabled the sonar). Everything went smooth.
Next step, time for test fly. It flew great in Stable mode. However, as soon as i toggled the ALT_Hold switch ON. Quad started acting strange. It kept climbing higher n higher and suddenly dropped out of nowhere. Luckily i managed to control by toggling the switch back to stable mode.
I have checked everything couple of times now. All connection looks good. Mission Planner looks ok. I don't know what the problem. Your help would be so much helpful. I have attached couple of videos below. Please take a look at them. If you need any other information let me know. Thank you.
Quad Setup:
- DJI F450 Frame
- HackerStyle 20-22L Motors
- Turnigy TY-P1 25Amps ESC (Flashed with SimonK firmware)
- ArduCopter 2.7.3
- MB1260 XL - Sonar
- 4000mah 20C 3Cell Battery
- DX7 with AR7000
- Using one of four ESCs to provide power to the APM 2.
Pictures of my Setup:
Videos of Sonar ALT-Hold Test:
Replies
If you post the Flash Logs I can help. Most likely your sonar is blocked.
You should make sure you have flown in Stabilize for about 10 seconds to narrow in on your throttle hold center point for any alt hold.
Jason